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The product code(s) for this leaflet is: PL 04425/0590.
Stemetil 12.5mg/ml Injection
Stemetil 12.5 mg/ml Injection
prochlorperazine mesilate
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1. What Stemetil Injection is and what it is used for
2. What you need to know before you have Stemetil Injection
3. How Stemetil Injection is given
4. Possible side effects
5. How to store Stemetil Injection
6. Contents of the pack and other information
Stemetil Injection contains a medicine called prochlorperazine mesilate. This belongs to a group of medicines called ‘phenothiazine antipsychotics’. It works by blocking the effects of a chemical in the brain.
Stemetil Injection can be used to:
Talk to your doctor, nurse or pharmacist before having Stemetil Injection if:
If you are not sure if any of the above apply to you, talk to your doctor, nurse or pharmacist before having Stemetil Injection.
Your doctor may do regular tests while you are having this medicine. These might include blood tests and an ECG to check your heart is working properly.
Tell your doctor, nurse or pharmacist if you are taking, have recently taken or might take any other medicines. This includes medicines you buy without a prescription, including herbal medicines. This is because Stemetil Injection can affect the way some other medicines work. Also, some medicines can affect the way Stemetil Injection works.
In particular, tell your doctor if you are taking any of the following:
Do not drink alcohol while you are having Stemetil Injection. This is because alcohol can add to the effects of Stemetil Injection and can cause serious breathing difficulties.
Do not have Stemetil Injection if:
The following symptoms may occur in newborn babies, of mothers that have used Stemetil Injection in the last trimester (last three months of their pregnancy): shaking, muscle stiffness and/or weakness, sleepiness, agitation, breathing problems, and difficulty in feeding. If your baby develops any of these symptoms you may need to contact your doctor.
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor, nurse or pharmacist for advice before taking this medicine.
You may feel sleepy after having this medicine. If this happens, do not drive or use any tools or machines.
Stemetil Injection is normally given by a doctor or nurse. This is because it needs to be given as a deep injection into a muscle.
If you are not sure why you are being given Stemetil Injection or have any questions about how much Stemetil Injection is being given to you, speak to your doctor or nurse. The usual doses are:
Schizophrenia and overactive behaviour or thoughts (mania):
Adults: 12.5 - 25 mg two or three times a day. You will be given injections until you are able to take Stemetil Tablets or syrup.
Stopping you feeling sick or being sick:
Adults: To begin with 12.5 mg by injection. This may be followed by oral medication 6 hours later if necessary.
Elderly: Your doctor may prescribe a lower dose. You should be careful during very hot or very cold weather to make sure that you do not get too hot or too cold.
Stemetil Injection is not given to children.
It is unlikely that your doctor or nurse will give you too much medicine. Your doctor and nurse will monitor your progress and check the medicine you are given. Always ask if you are not sure why you are getting a dose of medicine.
Having too much Stemetil may make you feel sleepy or dizzy, increased or rapid heartbeat, feeling very cold and confused, writhing movements, feeling restless, stiffness or shaking. You may lose consciousness.
Your doctor or nurse will have instructions on when to give you this medicine. It is unlikely that you will not be given the medicine as it has been prescribed. However, if you do think you have missed a dose, tell your doctor or nurse.
Keep having Stemetil Injection until your doctor tells you to stop. If you stop having Stemetil Injection, your illness may come back and you may have other effects such as feeling or being sick or difficulty sleeping. Your doctor will gradually stop your medicine to prevent these effects happening.
Stemetil Injection can cause your skin to be more sensitive to sunlight. You should avoid exposure to direct sunlight while having this medicine.
If you have any further questions on the use of this product, ask your doctor, nurse or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
As with other phenothiazine medicines, there have been very rare reports of sudden death with Stemetil Injection. These are possibly caused by heart problems.
In elderly people with dementia, a small increase in the number of deaths has been reported for patients taking antipsychotics compared with those not receiving antipsychotics.
If you get any side effects, talk to your doctor, nurse or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side effects you can help provide more information on the safety of this medicine.
This medicine will be kept by your doctor or nurse out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the label and carton. The expiry date refers to the last day of that month.
Keep the ampoules in the original carton in order to protect from light.
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.
Stemetil Injection is a colourless sterile solution.
Stemetil Injection is available in packs containing 10 x 1 ml ampoules or 10 x 2 ml ampoules.
Not all pack sizes may be marketed
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Manufacturer
This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor, nurse or pharmacist.
This leaflet was last revised in 01/2022.
© Sanofi, 1973 - 2022
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