i started out with novadex after it failing me so bad i picked this up. so far its been pretty good to me gives me an extra strength when i needed it. the 2 main downside is price 80 bucks and 6 pills to take a day. a tip for anyone who gets this take the black and white pill with your chain on your chest facing down and swallow. the pills will float in your mouth and by bending your head down it helps them go down easy