Is L-Tryptophan Safe?At this time, it is not clear if L-tryptophan supplements are safe for the general public. There is some concern that it may be responsible for a serious condition known as eosinophilia-myalgia syndrome (EMS). Some people are more likely than others to experience problems. Therefore, you should talk with your healthcare provider before taking L-tryptophan if you have:
- Liver disease, such as liver failure, cirrhosis, or hepatitis
- Kidney disease, such as kidney failure (renal failure)
- High levels of eosinophils in the blood (known as eosinophilia)
- Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see Tryptophan and Pregnancy)
- Breastfeeding (see Tryptophan and Breastfeeding).
Make sure to tell your healthcare provider about any other medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Precautions and Warnings With L-Tryptophan for more information, including any available warnings and precautions.)
Dosing InformationThere is little reliable information available about a safe and effective dose of L-tryptophan supplements for medicinal purposes. Therefore, make sure to follow the specific instructions on your particular product.
(Click L-Tryptophan Dosage for more information.)