L-tryptophan is an amino acid that is made from plant or animal sources.
L-tryptophan has been used in alternative medicine as an aid to treat sleep problems (insomnia), anxiety, depression, premenstrual syndrome, attention deficit disorder, and for smoking cessation and other conditions.
Not all uses for l-tryptophan have been approved by the FDA. L-tryptophan should not be substituted for medications prescribed for you by your doctor.
L-tryptophan is often sold as an herbal supplement. There are no regulated manufacturing standards in place for many herbal compounds and some marketed supplements have been found to be contaminated with toxic metals or other drugs. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination.
It is dangerous to try and purchase l-tryptophan on the Internet or from vendors outside of the United States. The sale and distribution of l-tryptophan outside of the U.S. does not comply with the regulations of the Food and Drug Administration (FDA) for the safe use of this medication.
L-tryptophan may also be used for other purposes not listed in this product guide.
When considering the use of herbal supplements, seek the advice of your doctor. You may also consider consulting a practitioner who is trained in the use of herbal/health supplements.
If you choose to take l-tryptophan, use it as directed on the package or as directed by your doctor, pharmacist, or other healthcare provider. Do not use more of l-tryptophan than is recommended on the label.
Take the medicine as prescribed by your doctor.
Take 1 or 2 capsules daily. For optimum absorption, take separately from protein-containing foods and dietary supplements containing protein or amino acids.
Store L-tryptophan at room temperature away from moisture and heat.
L-tryptophan is a protein building block that can be found in many plant and animal proteins.