Is It Effective?

In general, there is insufficient scientific proof supporting the effectiveness of tryptophan. Early studies have shown promising results for some, but not all, tryptophan uses.
(Click Does Tryptophan Work? for more information.)

Dosing Information

There is little reliable information available about a safe and effective dose of tryptophan supplements for medicinal purposes. Therefore, make sure to follow the specific instructions on your particular product.
(Click Tryptophan Dosage for more information.)

Side Effects of Tryptophan

Although it is a "natural" product, tryptophan can still cause side effects. Common side effects include:
  • Heartburn or indigestion
  • Abdominal pain (stomach pain)
  • Belching and gas
  • Nausea and vomiting
  • Diarrhea.
(Click Tryptophan Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)

Drug Interactions

The supplement can interact with several medications (see Tryptophan Drug Interactions).
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Tryptophan Supplement Information

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