Of the supplement. Some people inform about mild headaches, while others claim to suffer from an increased heart rate. And there is no doubt. The matter is that the product contains caffeine, which could lead to jitteriness. You may Leptigen also experience difficulties sleeping. For this reason avoid taking Leptigen before sleep or in the evening. Some customers may get an allergy to buy it for such money? I don't think so. People who are motivated enough will be able to manage their weight without this supplement. Leptigen is available only through the official 

http://www.nutritionofenergy.com/leptigen-reviews/