Travelling with Controlled Drugs
Before you go, check any rules and restrictions in that destination with the embassy.
Go to www.gov.uk/government/publications/foreign-embassies-in-the-uk
In general, if your medicine contains a drug listed as schedule 2, 3 or 4 on the controlled drug list, you need to either;
If required your GP can provide you with a letter to travel with but please be aware this is not an NHS service and there is a £30 charge for providing this.