Sleeping pills & minor tranquillisers A-Z

Provides detailed information on all sleeping pills & minor tranquillisers currently available in the UK.

clomethiazole

Clomethiazole (Heminevrin) is a non-benzodiazepine sleeping pill. It is sometimes spelled 'chlormethiazole'.

You can find detailed information about this drug in the official Patient Information Leaflet (PIL), including what it's for, how to take it, possible side effects and safety information. This leaflet should come with your medication (usually inside the box). You can also access it online as a PDF by clicking these links:

192mg capsules
31.5mg/ml syrup (liquid)

If a drug can come in different forms (such as tablets or liquid), there may be a separate PIL for each one. You should look at the PIL for the particular form and dose you've been prescribed. All PILs are available online on the electronic Medicines Compendium (eMC).

If you have any questions about your medication you can talk to your doctor, someone at your pharmacy or call NHS 111.

What else might I want to know?

About psychiatric medication. For what you should know before taking any psychiatric drug, receiving the right medication for you, and your right to refuse medication see our pages on psychiatric medication.
About sleeping pills and minor tranquillisers. For how they work, what they’re prescribed for, what to know before taking them, side effects and withdrawal effects see our pages on sleeping pills and minor tranquillisers.
About side effects. For what to do if you experience a side effect see our page on coping with side effects.
About coming off medication. For information on making your decision, planning withdrawal and withdrawal symptoms see our pages on coming off psychiatric drugs.
About accessing treatment. For information on this see our pages on seeking help for a mental health problem.
About interactions with recreational drugs and alcohol. For information on this see our page on drugs and medication.

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If you have personal experience of taking this drug and would be interested in producing a blog or vlog about it to appear alongside our information, see our pages on telling your story.