Turkey trots is a good description of the result. Anthrax and diphtheria are present in Russia. You need expert help before you travel. If you can't find an expert, call or FAX the Center for Disease Control Hotline in Atlanta. First of all have a copy of your doctor's latest report on your health with hospitalizations and shots with dates.
Diabetics require special planning.
My own prescription medicines are in my checked bag and also in my carry-on bag. Add sun screen and bacitracin antibacterial ointment. Health and trip-cancellation insurance are highly recommended. Keep a diary with hotel room and phone numbers and a log of all your purchases. Leave an itinerary with addresses and phone numbers with your friends, relatives, or co-workers.