When I feel stressed, I try changing up my environment. If there is a possibility, I go somewhere (it is better to go abroad in order to be far from problems). In case I can't go anywhere, I sleep enough, spend time on fresh air, meet with my friends or just stay at home with my family and have a good day. Frankly speaking, I haven't used any medication to combat stress, but I recommend to be very careful with it. Ideally, it is better to ask your doctor, but you can at least read the description of pills you are going to take. Personally I use
canadian pharmacy for this purpose as it provides visitors with the detailed information about meds that are sold there.