Appetite is a BIG problem for many people trying to lose weight but there are some natural products available that can help to decrease your appetite. The amino acid L-Phenylalanine is one of the best and is naturally found in most foods that contain protein like milk, eggs, cheese and beef. Research has shown that L-Phenylalanine is a potent appetite suppressant that works by increasing the hormone cholecystokinin (CCK) that is naturally released by the body to decrease your appetite by signaling the brain that your stomach is full.^1,2 Since Phenylalanine is naturally contained in many common foods you can help decrease your appetite by consuming more of these foods however you can achieve a much more potent dosage by taking a supplement containing Phenylalanine. Try taking a serving of a supplement about twenty to thirty minutes prior to a meal and see if you feel full faster and eat less. You can also use Phenylalanine throughout the day to control your appetite. The better weight loss products like Thermo Phen Phen contain L-Phenylalanine to help reduce your appetite all the time and the "Phen" in Thermo Phen Phen specifically refers to the 200mg of L-Phenylalanine that it containsas the most potent part of the appetite controlling ingredients in the weight loss formula. Try some Phenylalanine and you will probably be pleasantly surprised and how much less of an appetite you have and how much easier you are able to lose weight.