Always take a list of your medication with you. Ask your GP for a print out. If you need injections or liquids, carry a letter from your doctor with you confirming what they are and why you need them. You will be able to take more than 100mls but do check with the airline.
Consider translating them into the language of the country you're going to or at the least, make sure you have the generic names, not the UK trade names of the drugs.
Make sure you order them from your doctor in good time and take a few more days' worth in case of travel delays. You should also keep them in the original packages and put some in your hand luggage and your main in case a bag gets lost.