Suxamethonium Chloride Injection 50mg/ml

  1. Name of the medicinal product

Suxamethonium Chloride 50mg/ml Solution for Injection/Infusion Taj Pharma.
Suxamethonium Chloride 100mg/2ml Solution for Injection/Infusion Taj Pharma.

  1. Qualitative and quantitative composition

Suxamethonium Chloride 50mg/ml (100mg/2ml).

Each ml of solution for injection or infusion contains 50 mg of suxamethonium chloride dihydrate (equivalent to 36.55 mg of suxamethonium).

Each 2 ml ampoule contains 100 mg suxamethonium chloride dihydrate (equivalent to 73.1 mg of suxamethonium).

For the full list of excipients, see section 6.1.

  1. Pharmaceutical form

Solution for Injection or Infusion.

pH of the solution 3.0-4.2.

Osmolality of the product is 300-365 mOsmol/kg.

  1. Clinical particulars

4.1 Therapeutic indications

Used for muscle relaxation during general anaesthesia .

4.2 Posology and method of administration

Use by intravenous injection

Adults and Children over 12 years

The dose is dependent on body weight, the degree of muscular relaxation required, the route of administration, and the response of individual patients.

To achieve endotracheal intubation Suxamethonium Chloride is usually administered intravenously in a dose of 1mg/kg. This dose will usually produce muscular relaxation in about 30 to 60 seconds and has a duration of action of about 2 to 6 minutes. Larger doses will produce more prolonged muscular relaxation, but doubling the dose does not necessarily double the duration of relaxation. Supplementary doses of Suxamethonium Chloride of 50% to 100% of the initial dose administered at 5 to 10 minute intervals will maintain muscle relaxation during short surgical procedures performed under general anaesthesia.

The total dose of Suxamethonium Chloride should not exceed 500mg.

Infants and young children are more resistant to suxamethonium compared with adults.

Children, 1 to 12 years

1-2mg/kg by intravenous injection.

Infants, under 1 year

2mg/kg by intravenous injection.

Use by intravenous infusion

Suxamethonium Chloride may be given by intravenous infusion as a 0.1% to 0.2% solution, diluted in 5% glucose solution or sterile isotonic saline solution, at a rate of 2.5 to 4mg per minute. The infusion rate should be adjusted according to the response of individual patients.


As for adults.

The elderly may be more susceptible to cardiac arrhythmias, especially if digitalis-like drugs are also being taken (see section 4.4).

Use in renal impairment:

A normal single dose of suxamethonium injection may be administered to patients with renal insufficiency in the absence of hyperkalaemia. Multiples or larger doses may cause clinically significant rises in serum potassium and should not be used (see section 4.3 and 4.4).

Use in hepatic impairment:

Termination of the action of suxamethonium is dependent on plasma cholinesterase, which is synthesised in the liver. Although plasma cholinesterase levels often fall in patients with liver disease, with the exception of severe hepatic failure, levels are seldom low enough to significantly prolong suxamethonium-induced apnoea (see section 4.4).

Use in patients with reduced plasma cholinesterase:

Patients with reduced plasma cholinesterase activity may experience prolonged and intensified neuromuscular blockade following administration of suxamethonium. In these patients it may be advisable to administer reduced doses of suxamethonium injection (see section 4.3, 4.4 and 4.5).

Monitoring advice:

Monitoring of neuromuscular function is recommended during infusion of suxamethonium injection or if suxamethonium injection is to be administered in relatively large cumulative doses over a relatively short period of time in order to individualise dosage requirements (see section 4.4).

Method of administration:

By bolus injection or infusion.

4.3 Contraindications

  • Suxamethonium has no effect on the level of consciousness and therefore should not be administered to a patient who is not fully anaesthetised
  • Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
  • Personal or family history of malignant hyperthermia (see section 4.4)
  • Inherited atypical plasma cholinesterase activity (see section 4.4)
  • Abnormal plasma pseudocholinesterase activity
  • Hyperkalaemia from any cause (see section 4.4)
  • Muscular dystrophy and other myopathies e.g. Duchenne muscular dystrophy
  • Personal or family history of congenital myotonic diseases such as myotonia congenita and dystrophia myotonica

4.4 Special warnings and precautions for use

Suxamethonium Chloride 50 mg/ml Injection/Infusion paralyses the respiratory muscles as well as other skeletal muscles but has no effect on consciousness.

Suxamethonium should be administered only by or under close supervision of an anaesthetist familiar with its action, characteristics and hazards, who is skilled in the management of artificial respiration and only where there are adequate facilities for immediate endotracheal intubation with administration of oxygen by intermittent positive pressure ventilation.

High rates of cross-sensitivity (greater than 50%) between neuromuscular blocking agents have been reported. Therefore, where possible, before administering suxamethonium, hypersensitivity to other neuromuscular blocking agents should be excluded. Suxamethonium, should only be used when absolutely essential in susceptible patients. Patients who experience a hypersensitivity reaction under general anaesthesia should be tested subsequently for hypersensitivity to other neuromuscular blockers.

The patient must be monitored fully with a peripheral nerve stimulator during prolonged administration of suxamethonium in order to avoid overdosage.

Neuromuscular blockade

Suxamethonium is rapidly hydrolysed by plasma cholinesterase which thereby limits the intensity and duration of the neuromuscular blockade.

Individuals with decreased plasma cholinesterase activity exhibit a prolonged response to suxamethonium . Approximately 0.05% of the population has an inherited cause of reduced cholinesterase activity (see section 4.3).

Prolonged and intensified neuromuscular blockade following Suxamethonium Injection may occur secondary to reduced plasma cholinesterase activity in the following states or pathological conditions:

  • physiological variation as in pregnancy and the puerperium (see section 4.6)
  • genetically determined abnormal plasma cholinesterase (see section 4.3)
  • severe generalised tetanus, tuberculosis, other severe or chronic infections
  • following severe burns
  • chronic debilitating disease, malignancy, chronic anaemia and malnutrition
  • end-stage hepatic failure, acute or chronic renal failure (see section 4.2)
  • auto-immune diseases: myxoedema, collagen diseases
  • iatrogenic: following plasma exchange, plasmapheresis, cardiopulmonary bypass, and as a result of concomitant drug therapy (see section 4.5).

Hyperkalemia :

An acute transient rise in serum potassium often occurs following the administration of Suxamethonium in normal individuals; the magnitude of this rise is of the order of 0.5 mmol/litre. In certain pathological states or conditions, this increase in serum potassium following Suxamethonium administration may be excessive and cause serious cardiac arrhythmias and cardiac arrest for

– Patients recovering from major trauma, the period of greatest risk of hyperkalaemia is from about 5 to 70 days after injury and may be further prolonged if there is delayed healing due to persistent infection.

– Patients with neurological deficits involving spinal cord injury, peripheral nerve injury or acute muscle wasting (upper and/or lower motor neurone lesions); the potential for potassium release occurs within the first 6 months after the acute onset of the neurological deficit and correlates with the degree and extent of muscle paralysis. Patients who have been immobilised for prolonged periods of time may be at similar risk.

– Patients with pre-existing hyperkalaemia (see section 4.3). If there is no hyperkalaemia or neuropathy then renal failure is not a contraindication to the administration of a normal single dose of Suxamethonium Injection, but multiple or large doses may cause clinically significant rises in serum potassium and should not be used.

– Patients with severe sepsis, the potential for hyperkalaemia seems to be related to the severity and duration of infection.

Phase II block

If Suxamethonium Chloride is given over a prolonged period, the characteristic depolarising neuromuscular (or Phase I) block may change to one with characteristics of a non-depolarising (or Phase II) block. Although the characteristics of a developing Phase II block resemble those of a true non-depolarising block, the former cannot always be fully or permanently reversed by anticholinesterase agents. When a Phase II block is fully established, its effects will then usually be fully reversible with standard doses of neostigmine accompanied by an anticholinergic agent.

Muscle Pain

Muscle pains are frequently experienced after administration of suxamethonium and most commonly occur in ambulatory patients undergoing short surgical procedures under general anaesthesia. There appears to be no direct connection between the degree of visible muscle fasciculation after administration of Suxamethonium Injection and the incidence or severity of pain.


In healthy adults, suxamethonium occasionally causes a mild transient slowing of the heart rate on initial administration. Bradycardias are more commonly observed in children and on repeated administration of suxamethonium in both children and adults.

Pre-treatment with intravenous atropine or glycopyrrolate significantly reduces the incidence and severity of suxamethonium-related bradycardia.

Ventricular arrhythmias

In the absence of pre-existing or evoked hyperkalaemia, ventricular arrhythmias are rarely seen following suxamethonium administration. Patients taking digitalis-like drugs are however more susceptible to such arrhythmias (see section 4.5). The action of suxamethonium on the heart may cause changes in cardiac rhythm including cardiac arrest.

Myasthenia Gravis

It is inadvisable to administer Suxamethonium injection to patients with advanced myasthenia gravis. Although these patients are resistant to suxamethonium they develop a state of Phase II block which can result in delayed recovery. Patients with myasthenic Eaton-Lambert syndrome are more sensitive than normal to Suxamethonium injection necessitating dosage reduction

Open Eye Injuries/Glaucoma:

Suxamethonium causes a slight transient rise in intra-ocular pressure and is therefore not recommended in the presence of open eye injuries, or where an increase in intra-ocular pressure is undesirable, unless the potential benefit outweighs the potential risk to the eye.


Tachyphylaxis occurs after repeated administration of suxamethonium.


Suxamethonium is contraindicated in patients with a personal or family history of malignant hyperthermia (see section 4.3) and if the condition occurs unexpectedly, all anaesthetic agents known to be associated with its development including Suxamethonium must be discontinued straight away. Full supportive measures must be employed immediately. Intravenous dantrolene sodium is indicated in the treatment of malignant hyperthermia.

Paediatric population

Bradycardias are more commonly observed in children and on repeated administration of suxamethonium. Some authorities advocate routine premedication of paediatric patients with intravenous atropine. Intramuscular atropine is not effective. Pretreatment with intravenous atropine or glycopyrrolate significantly reduces the incidence and severity of suxamethonium-related bradycardia.

Non-treatable cases of cardiac arrest have been described in paediatric patients with undiagnosed neuromuscular disease. Extra care or monitoring must be carried out on infants and children being given suxamethonium, due to the increased risks of undiagnosed muscular disorders or unknown predisposition to malignant hyperthermia (see section 4.3 and 4.8).

Suxamethonium Chloride should not be mixed in the same syringe with any other agent, especially thiopental.

4.5 Interaction with other medicinal products and other forms of interaction

Suxamethonium, a depolarising muscle relaxant of short duration, may interact with the following:


Lidocaine, procaine, procainamide, chloroprocaine, cocaine, quinidine and verapamil enhance muscle relaxant effect.


Effect of muscle relaxants is enhanced by aminoglycosides such as dibekacin, kanamycin, neomycin, ribostamycin and streptomycin, the effect of suxamethonium is also enhanced by vancomycin, azlocillin, clindamycin, colistin, piperacillin and polymyxin B.


Cholinesterase and pseudocholinesterase both degrade suxamethonium. Therefore anticholinesterases will enhance suxamethonium. Examples of anticholinesterases include donepezil, galantamine, rivastigmine, aprotinin, cyclophosphamide, dexpanthenol, ecothiopate, metoclopramide (non-selective drug), neostigmine, phenelzine (MAOI), promazine, quinine and chloroquine (antimalarials), tacrine and trimetaphan (ganglion blocking drug). Exposure to pesticides may also reduce pseudocholinesterase activity such as diazinon, malathion and sheep dips.

Blood transfusion:

Blood transfusions may contribute to an increase in plasma cholinesterase levels, as a result of which the therapeutic effect of suxamethonium can be influenced unpredictably.

ACE inhibitors:

Concomitant use of medicines that may increase potassium levels, such as ACE inhibitors, can cause hyperkalaemia (see section 4.3).


Effect of muscle relaxants antagonised by carbamazepine and phenytoin (recovery from neuromuscular blockade accelerated).

Antineoplastics (anticancer drugs):

Cyclophosphamide, chlormethine, thiotepa and tretamine all reduce pseudocholinesterase activity.


Diazepam and midazolam may alter the depth/duration of suxamethonium.

Calcium-channel Blockers:

Nifedipine and verapamil enhance effect of non-depolarising muscle relaxants; hypotension, myocardial depression, and hyperkalaemia reported with intravenous dantrolene and verapamil.

Cardiac Glycosides:

Arrhythmias if suxamethonium given with digoxin.


Cyclophosphamide and thiotepa enhance effect of suxamethonium.

General Anaesthetics:

Propofol can cause serious bradycardia if given with suxamethonium and fentanyl citrate-droperidol (Innovar) enhances the effects of suxamethonium. Suxamethonium also interacts with halothane, isoflurane, enflurane, cyclopropane, propanidid and ether.

Magnesium Salts:

Parenteral magnesium enhances effect of suxamethonium.


Demecarium and ecothiopate eye-drops, neostigmine and pyridostigmine, and possibly donepezil enhance effect of suxamethonium but antagonise effect of non-depolarising muscle relaxants.


Bambuterol enhances effect of suxamethonium.

4.6 Fertility, pregnancy and lactation

No studies of the effect of suxamethonium on female fertility or pregnancy have been performed.


Suxamethonium has no direct action on the uterus or other smooth muscle structures. In normal therapeutic doses it does not cross the placental barrier in sufficient amounts to affect the respiration of the infant. The benefits of the use of suxamethonium as part of a rapid sequence induction for general anaesthesia normally outweighs the possible risk to the foetus. Plasma cholinesterase levels fall during the first trimester of pregnancy to about 70 to 80% of their pre-pregnancy values; a further fall to about 60 to 70% of the pre-pregnancy levels occurs within 2 to 4 days after delivery. Plasma cholinesterase levels then increase to reach normal over the next 6 weeks. Consequently, a high proportion of pregnant and puerperal patients may exhibit mildly prolonged neuromuscular blockade following suxamethonium injection. Suxamethonium is not embryotoxic or teratogenic in two animal species. The use of suxamethonium may be considered during pregnancy, if necessary.


It is not known whether suxamethonium or its metabolites are excreted in human milk. However, because the drug is rapidly hydrolyzed by plasma cholinesterase (pseudocholinesterase) to an inactive metabolite, no effects on the breastfed newborns/infants are anticipated.


There is no data from the use of suxamethonium on fertility. However, because the drug is rapidly hydrolyzed by plasma cholinesterase (pseudocholinesterase) to an inactive metabolite, no effects on fertility are anticipated once the pharmacological effect is over.

4.7 Effects on ability to drive and use machines

This precaution is not relevant to the use of suxamethonium injection. Suxamethonium will always be used in combination with a general anaesthetic and therefore the usual precautions relating to performance of tasks following general anaesthesia apply.

4.8 Undesirable effects

Adverse reactions are listed below by system organ class and frequency. Estimated frequencies were determined from published data. Frequencies are defined as follows: very common (≥1/10); common (≥1/100 to <1/10), uncommon (≥1/1,000 to <1/100); rare (≥1/10,000 to <1/1,000); very rare (<1/10,000).

Immune system disorders
Very rareAnaphylactic reactions.
Eye disorders
CommonIncreased intraocular pressure.
Cardiac disorders
CommonBradycardia, tachycardia.
RareArrhythmias (including ventricular arrhythmias), cardiac arrest1
Vascular disorders
CommonSkin flushing.
Not knownHypertension and hypotension
Respiratory, thoracic and mediastinal disorders
RareBronchospasm, prolonged respiratory depression2, apnoea2
Gastrointestinal disorders
Very commonIncreased intragastric pressure
UnknownExcessive salivation
Skin and subcutaneous tissue disorders
Musculoskeletal and connective tissue disorders
Very commonMuscle fasciculation, post-operative muscle pains
CommonMyoglobinaemia3, myoglobinuria3
General disorders and administration site conditions
Very rareMalignant hyperthermia
CommonTransient blood potassium increase

1 There are case reports of hyperkalaemia-related cardiac arrests following the administration of suxamethonium to patients with congenital cerebral palsy, tetanus, Duchenne muscular dystrophy, and closed head injury. Such events have also been reported rarely in children with hitherto undiagnosed muscular disorders.

2 Individuals with decreased plasma cholinesterase activity exhibit a prolonged response to suxamethonium. Approximately 0.05% of the population has an inherited cause of reduced cholinesterase activity (please refer to section 4.4).

3 Rhabdomyolysis has also been reported

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product.

4.9 Overdose

Profound, prolonged muscle paralysis with respiratory depression are manifestations of a suxamethonium overdose. Ventilatory support is required.

The use of neostigmine and other cholinesterase inhibitors should be avoided, as these prolong the depolarising effect of suxamethonium chloride.

The decision to use neostigmine to reverse a Phase II suxamethonium-induced block depends on the judgement of the clinician in the individual case. Valuable information in regard to this decision will be gained by monitoring neuromuscular function. If neostigmine is used, its administration should be accompanied by appropriate doses of an anticholinergic agent such as atropine.

  1. Pharmacological properties

5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Peripherally acting muscle relaxants, choline derivatives

Suxamethonium is closely related in structure to acetylcholine. Suxamethonium is quickly hydrolysed by plasma cholinesterase. Suxamethonium acts on the skeletal muscle motor endplate just like acetylcholine as an agonist, to cause flaccid paralysis of muscle (phase 1 block). Suxamethonium diffuses slowly to the endplate and the concentration at the endplate persists for long enough to cause loss of electrical excitability. The depolarization of the muscle endplate establishes a voltage gradient and this causes opening of voltage-dependent ion channels of the muscle leading to transient contraction of the muscle. Although the end-plate stays depolarised, the muscle membrane accounts for this depolarization and remains flaccid. If suxamethonium is kept continuously present during infusion, the junctional membrane slowly regains its resting potential with the return of neuromuscular transmission; to maintain the effect, a higher infusion rate is required (tachyphylaxis). With continued infusion, neuromuscular transmission will fail again (phase 2 block) even though the membrane potential of the end-plate stays unchanged and normal or near normal. A phase 2 block has clinical characteristics of a non-depolarizing block. A phase 2 block may be associated with prolonged neuromuscular blockade and apnoea. The mechanism of this block is not known but channel blocking by penetration of suxamethonium into the sub-end plate cytoplasm, intracellular accumulation of calcium and sodium, the loss of intracellular potassium, and activation of Na,K-ATPase all contribute.

Neuromuscular-blocking drugs are used mainly in anaesthesia to produce muscle relaxation. Although complete relaxation can be produced by anaesthetic drugs alone, the concentrations needed to obliterate spinal reflexes are high and it is much more satisfactory to produce paralysis by blocking neuromuscular transmission. The drugs are given intravenously, and act within about 30 to 60 seconds. Suxamethonium acts for about 2 to 6 minutes, being hydrolysed by plasma cholinesterase (pseudocholinesterase).

5.2 Pharmacokinetic properties

After intramuscular or intravenous injection, suxamethonium chloride is rapidly distributed in the extracellular fluids throughout the body.

Suxamethonium chloride is rapidly hydrolyzed by plasma cholinesterase to succinylmonocholine (a 20 – 80 x less active non-depolarizing muscle relaxant) and choline. Succinylmonocholine is then slowly hydrolyzed to succinic acid and choline. Less than 10% of an administered dose is excreted unchanged in the urine. The plasma half-life of suxamethonium chloride is approximately 3 minutes. Small amounts of suxamethonium chloride crosses the placenta. It is not known if suxamethonium chloride is excreted in human milk.

5.3 Preclinical safety data

Genotoxicity: No bacterial mutation assays have been conducted. There are some data to suggest a weak clastogenic effect in mice, but not in patients who had received suxamethonium chloride.

Carcinogenicity:-Carcinogenicity studies have not been performed.

Embryo-foetal development:-Animal reproduction studies have not been conducted with suxamethonium. It is also not known whether suxamethonium can affect reproductive capacity or cause foetal harm when administered to a pregnant woman.

  1. Pharmaceutical particulars

6.1 List of excipients

Hydrochloric Acid ( for pH adjustment)

Water for Injections

6.2 Incompatibilities

Suxamethonium Chloride 50 mg/ml Solution for Injection/Infusion should not be mixed with any other drug prior to its administration.

Suxamethonium Chloride 50 mg/ml Solution for Injection/Infusion is acidic and should not be mixed with highly alkaline solutions, e.g. barbiturates

6.3 Shelf life

18 months.

Once opened, use immediately.

6.4 Special precautions for storage

Store in a refrigerator, between 2 and 8°C. Do not freeze.

Store in the original package to protect from lightFor storage conditions after first opening of the medicinal product see section 6.3.

6.5 Nature and contents of container

Type I clear glass 2 ml ampoule. 10 ampoules are packed in one carton.

6.6 Special precautions for disposal and other handling

Use once and discard any remaining solution.

Not for dilution.


  1. Manufactured in India by:
    Mumbai, India
    Unit No. 214.Old Bake House,
    Maharashtra chambers of Commerce Lane,
    Fort, Mumbai – 400001
    at:Gujarat, INDIA.
    Customer Service and Product Inquiries:
    1-800-TRY-FIRST (1-800-222-434 & 1-800-222-825)
    Monday through Saturday 9:00 a.m. to 7:00 p.m. EST


Suxamethonium Chloride Injection 50mg/ml, 100mg/2ml

Package Leaflet: Information for the patient

Suxamethonium Chloride 50mg/ml Solution for Injection Taj Pharma
Suxamethonium Chloride 100mg/2ml Solution for Injection Taj Pharma

Suxamethonium Chloride

Read all of this leaflet carefully before you are given this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor or nurse.
  • If you get any side effects, talk to your doctor or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

The name of your medicine is Suxamethonium Chloride 100mg/2ml Solution for Injection. It will be referred to as Suxamethonium Chloride for ease hereafter.

What is in this leaflet

  1. What Suxamethonium Chlorideis and what it is used for
    2. What you need to know before you are given Suxamethonium Chloride
    3. How Suxamethonium Chloridewill be given to you
    4. Possible side effects
    5. How to store Suxamethonium Chloride
    6. Contents of the pack and other information
  2. What Suxamethonium Chloride is and what it is used for

Suxamethonium Chloride belongs to a group of medicines called muscle relaxants. Their effect is to block the connection between the nerves and certain muscles, which relaxes these muscles by temporarily paralysing them. This effect helps surgeons when performing operations.

This medicine can also be used when a patient is put on a ventilator to control breathing. During this procedure, it is necessary for the muscles used for breathing to be paralysed. Suxamethonium Chloride can also reduce the intensity of muscle contractions associated with drug-induced convulsions or with electroconvulsive therapy (ECT).

  1. What you need to know before you are given Suxamethonium Chloride

You should not be given Suxamethonium Chloride

  • if you are allergic to Suxamethonium Chloride, any other muscle relaxants or any of the other ingredients of this medicine (listed in section 6)
  • if you or your family have reacted badly to an anaesthetic before such as a very high body temperature (malignant hyperthermia)
  • if you have a deficiency of an enzyme, pseudocholinesterase which breaks down suxamethonium in the body
  • if you have had a major accident, operation or severe burns within the last three months
  • if you have not been able to move for a long time such as to allow a broken bone to mend or a long period of bed rest
  • if you have high levels of potassium in your blood (hyperkalaemia)
  • if you have recently had an eye injury
  • if you suffer from a problem caused by too much pressure in your eye called ‘glaucoma’
  • if you or any of your family have a disease of the muscles or nerves, such as a muscle wasting disease, paralysis, motor neurone disease, muscular dystrophy or cerebral palsy.

If any of the above apply to you or if you are not sure, talk to your doctor, nurse or member of the operating theatre staff before you are given Suxamethonium Chloride.

Warnings and precautions

Talk to your doctor, nurse or member of the operating theatre staff before you are given Suxamethonium Chloride:

  • if you are pregnant or have given birth in the last six weeks
  • if you have tetanus, an infection which occurs through wound contamination
  • if you have tuberculosis or other severe or long standing infection
  • if you have had any long standing illness which has left you weak
  • if you suffer from cancer
  • if you have anaemia
  • if you are undernourished
  • if you have liver or kidney problems
  • if you have auto-immune diseases, for example, multiple sclerosis
  • if you have an underactive thyroid gland, a condition known as myxoedema
  • if you have muscle disease, for example, myasthenia gravis
  • if you have recently had a blood transfusion or a heart-lung by pass
  • if you have been in contact with insecticides
  • if you have ever had an allergic reaction to any muscle relaxant which was given as part of an operation.
  • if you are suffering from an imbalance in your body’s blood chemistry
  • if you have a bone injury or muscle tightness in the area of the injury
  • if you recently received radiation therapy
  • if you suffer from severe burns

If you are elderly (over 65 years) check with your doctor, nurse or pharmacist before having this medicine as it may be linked to a temporary problem with the rate or rhythm of the heartbeat, especially if you are also taking medicines similar to digitalis

Suxamethonium Chloride should only be used when absolutely essential in vulnerable patients

Make sure your doctor is aware of these situations before you are given this injection.


Care should be taken before administering Suxamethonium Chloride to children.

Other medicines and Suxamethonium Chloride

Tell your doctor, nurse or other relevant hospital staff member if you are taking, have recently taken or might take any other medicines. This includes any herbal products or medicines bought without a prescription. This is because these medicines can affect how well Suxamethonium Chloride works or can cause side effects.

In particular tell your doctor, nurse or member of the operating theatre staff if you are taking any of the following:

  • anaesthetics such as propofol, ketamine, propanidid, lignocaine and procaine or other medicines used during surgery such as pain killers (morphine, pethidine and pancuronium) or drugs to reverse their effects (called morphine antagonists)
  • medicines used to treat Alzheimer’s disease, such as donepezil, galantamine and tetrahydroaminoacridine (Tacrine hydrochloride)
  • medicines for raised pressure in the eye (glaucoma) such as ecothiophate eye drops
  • medicines for coughs, cold, sleeping or tablets for allergies
  • medicines used to treat malaria, containing chloroquine or quinine. Quinine is sometimes used for night cramps
  • oral contraceptives
  • medicines for treating asthma and other breathing conditions e.g. terbutaline, bambuterol
  • medicines containing metoclopramide (used to treat and prevent feeling or being sick)
  • medicines for treating cancer (cytotoxic drugs) such as cyclophosphamide, chlorethamine, tretamine and thiotepa
  • medicines for mental problems including phenelzine, lithium, chlorpromazine or promazine
  • medicines containing magnesium (such as some laxatives or antacids)
  • medicines containing oestrogens
  • medicines containing steroids (used for inflammatory conditions e.g. rheumatism etc)
  • oxytocin (to contract the womb)
  • some non-penicillin antibiotics (for infection) e.g. clindamycin, polymyxins, and aminoglycosides, vancomycin, piperacillin
  • medicines used to treat disturbances in heartbeat rhythm (antiarrhythmic drugs), angina or high blood pressure such as beta-blockers, verapamil, digoxin, procainamide or quinidine
  • aprotinin (to reduce bleeding)
  • medicines used to treat myasthenia gravis such as neostigmine, pyridostigmine, physostigmine and edrophonium (known as acetylcholinesterase inhibitors)
  • medicines used to control your blood pressure during surgery such as trimetaphan
  • medicines that can affect the way your body fights disease (immunosuppressants) such as azathioprine. These can be used to stop your body rejecting a transplanted organ or for ‘auto-immune’ diseases such as rheumatoid arthritis
  • medicines used to treat depression and/or anxiety SSRIs (selective serotonin reuptake inhibitors) including fluoxetine, paroxetine, sertraline, fluvoxamine, citalopram, escitalopram.

Pregnancy and breast feeding

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before you are given this medicine.


Suxamethonium Chloride should only be used during pregnancy when your doctor decides the benefits to you are greater than any possible risk to the unborn baby.


There is insufficient information to say whether this medicine passes in to breast milk. It is recommended not to breast feed for at least 24 hours following administration of Suxamethonium Chloride.

Driving and using machines

It can be dangerous to drive or operate machinery too soon after having had an operation. Your doctor will tell you how long to wait before you can drive or use machinery.

Suxamethonium Chloride contains less than 1mmol sodium (23mg) per dose, i.e. essentially “sodium free”.

  1. How Suxamethonium Chloride will be given to you

You will never be expected to give yourself this medicine. It will always be given to you by a person who is qualified to do so.

Suxamethonium Chloride can be given:

  • as a single injection into your vein (intravenous bolus injection)
  • as a continuous infusion into your vein. This is where the drug is slowly given to you over a long period of time.

Your doctor will decide the way you are given the drug and the dose you will receive. It will depend on:

  • your age
  • your body weight
  • the amount of muscle relaxation you require
  • your expected response to the medicine.

It may be administered as an injection. The anaesthetist will make sure that you are asleep before this muscle relaxant is administered.

If you receive more Suxamethonium Chloride than you should

Suxamethonium Chloride will always be given under carefully controlled conditions. In case of an overdose, the muscle will stay relaxed for longer than required. However, if you think that you have been given more than you should tell your doctor or nurse immediately.

If you have any further questions on the use of this medicine, ask your doctor or nurse.

  1. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

If you get any side effects, talk to your doctor, nurse or other relevant hospital staff member.

This includes any possible side effects not listed in this leaflet.

All medicines can cause allergic reactions although serious allergic reactions are very rare. Any sudden wheeziness, difficulty in breathing, swelling of the eyelids, face or lips, rash or itching (especially affecting your whole body) should be reported to a doctor immediately.

The following side effects have also been reported:

Very common (may affect more than 1 in 10 people)

  • abdominal cramps or pain and a feeling of nausea or “fullness”
  • visible twitching of muscle under the skin
  • excessive production of saliva
  • muscle pain after the operation – your doctor will monitor you for this.

Common (may affect up to 1 in 10 people)

  • raised pressure of fluid in the eye which may cause headache or blurred vision
  • speeding up or slowing down of your heart rate
  • skin flushing
  • skin rash
  • laboratory tests revealing high level of potassium in your blood
  • high/low blood pressure
  • laboratory tests revealing protein in the blood or urine due to muscle damage
  • muscle damage which may make your muscles ache or feel tender, stiff and weak.

Your urine may also look dark or be red or cola coloured.

Rare (may affect up to 1 in 1,000 people)

  • abnormal heart rhythm
  • heart problems including changes in the way in which your heart beats or your heart stops beating
  • difficulty in breathing or temporary loss of breath
  • difficulty in opening your mouth.

Very rare (may affect up to 1 in 10,000 people)

  • high body temperature.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet.

  1. How to store Suxamethonium Chloride
  • Keep this medicine out of the sight and reach of children.
  • The expiry date (EXP) is printed on the label and the carton. The first 2 digits indicate the month and the remaining digits indicate the year of expiry. Do not use this medicine after the expiry date which is stated on the carton and label. The expiry date refers to the last day of that month.
  • Your doctor or nurse will know how to store this medicine properly.
  • Keep the ampoule in the outer carton in order to protect from light.
  • The ampoules containing the injection solution are stored in refrigerator in their original packaging at a temperature between 2° and 8°C. Do not freeze. Once opened, any unused liquid should be discarded.

Do not use if the ampoule is damaged or if the contents are discoloured or deteriorated.

The solution should not be mixed with any other drugs.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

  1. Contents of the pack and other information

What Suxamethonium Chloride contains

The active substance is Suxamethonium Chloride. There is 100mg of Suxamethonium Chloride in 2ml of the injection.

The other ingredients of the solution are sodium acetate and water for injections.

What Suxamethonium Chloride looks like and contents of the pack

Suxamethonium Chloride is a clear, colourless sterile solution. The solution is supplied in glass ampoule (small bottle). These ampoules are then packed into cardboard boxes. Each box contains 10 x 2ml ampoules.


  1. Manufactured in India by:
    Mumbai, India
    Unit No. 214.Old Bake House,
    Maharashtra chambers of Commerce Lane,
    Fort, Mumbai – 400001
    at:Gujarat, INDIA.
    Customer Service and Product Inquiries:
    1-800-TRY-FIRST (1-800-222-434 & 1-800-222-825)
    Monday through Saturday 9:00 a.m. to 7:00 p.m. EST