Phenylalanine has many therapeutic uses. It is considered beneficial in the treatment of obesity and is being successfully employed as an appetite suppressant for this condition.
It has been demonstrated that in the intestinal tract, the amino acids tryptophan and phenylalanine trigger the release of cholycystokinin (CCK) which induces satiety, and a termination of eating.
An intake of half a teaspoon of phenylalanine powder 30 minutes before each meal, can lead to a loss of as much as 100 to 200 g of weight a day.
The other positive effects noticed after 24-48 hours of taking phenylalanine are a feeling of greater alertness, an increase in sexual interest, and memory enhancement. It diminishes depressant feelings, if any. The depressant states are generally relieved within a few days by taking 100 mg-500 mg of 1-phenylalanine per day. Precautions. Caution should be observed in the use of phenylalanine in hypertensive individuals. Low doses of around 100 mg daily should be taken by anyone with suspected high blood pressure, and a check should be kept on pressure levels. Phenylalanine should not be taken by those who are taking drugs such as Aldomet for high blood pressure.