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Explains the mental health effects of recreational drugs, what might happen if you use recreational drugs and also have a mental health problem, and suggestions for where to find support.
When two or more drugs are taken at the same time (whether they are legal or illegal) they are likely to interact with one another, so that one drug changes the effects of the other. This means:
Your age, weight, genes, general health and liver or kidney function will make a difference to the way the drugs work. However, there are some common interactions that many people experience. This page has information about:
Mixing different drugs, or mixing drugs with alcohol, is always dangerous. The effects can be hard to predict, but there are some known interactions:
These are some of the known interactions between drugs and psychiatric medication.
Drugs may also interact with any other type of prescribed medicines, as well as those bought over the counter.
This information was published in November 2016. We will revise it in 2019.
References are available on request. If you would like to reproduce any of this information, see our page on permissions and licensing.