The effects of drugs and alcohol on the body can be huge, not just in terms of your own health and wellbeing, but also from a safety at work perspective.
It's important you understand the dangers that use of illicit but also some prescription drugs can have upon you. The resources on this page will provide information, but also support that you can seek for advice and help.
If you have any concerns around your use of drugs or alcohol, seek
help from your GP and if it is likely to impact your work, you should speak with
occupational health or HR department - good employers will support you.