How It Works
This amino acid is proven to increase energy expenditure by boosting adrenaline. It is especially effective for this purpose when combined with green tea. It is also effective as an appetite suppressant. It is unknown exactly how the amino acid works to bring about these effects. However, numerous studies have shown that these two properties of l-phenylalanine are available to people who take it as a supplement.
This amino acid is also good for other uses as well. There is some evidence that it may be used to treat chronic depression. It may also decrease symptoms of Parkinson’s disease. It may also be used to reduce the effects of alcohol withdrawals in addicts, and help alleviate the pain and stiffness associated with arthritis.
Side Effects and Dosage
There are no side effects for normally healthy adults who want to take this supplement. However, adults with schizophrenia should avoid the supplement because it may make a movement disorder appear or worsen. In addition, breastfeeding mothers should not take the supplement. Women who are trying to become pregnant should not take the supplement for at least twenty weeks before attempting to become pregnant to avoid a possible link to birth defects.
People with health conditions that cause high levels of the amino acid should definitely avoid the supplement. It could cause high blood pressure, stroke, mental retardation, and other effects in people with these conditions. However, in spite of these warnings, l-phenylalanine is quite safe for most people who are trying to lose weight, and it can actually benefit them in other ways as well.