Looking for the hottest stimulant of 2014 and 2015? Amp Citrate is still available and this ingredient is in some of the hottest fat burners and pre-workout supplements on the market. Amp citrate is perfect for focus, extreme energy and fat burning. That is why you will see AMP Citrate mainly in supplements such as pre-workouts and fat burners. Below you will find the best selling amp citrate supplements on the market today.