HerbsRx
Strong evidence

L-Tryptophan

An essential aromatic amino acid that crosses the blood-brain barrier via the Large Neutral Amino Acid (LNAA) transporter, serving as the obligate biological precursor for 5-Hydroxytryptophan (5-HTP), Serotonin (5-HT), and Melatonin synthesis, regulating sleep architecture and mood.

What L-Tryptophan is used for

  • Insomnia
  • Sleep Architecture Disturbances
  • Mild Depression
  • Anxiety
  • Premenstrual Dysphoric Disorder (PMDD)
  • Emotional Eating

Pharmaceuticals L-Tryptophan is studied as a natural alternative to

  • Melatonin
  • Ambien
  • 5-HTP
  • SSRIs (Prozac/Zoloft - supportive precursor)
  • Benadryl

Educational information only — never stop or change a prescribed medication without talking to your prescriber first.

Safety and warnings

⚠️

Do NOT combine with prescription SSRIs, MAOIs, or other serotonergic medications due to the theoretical risk of Serotonin Syndrome. Take on an empty stomach for proper brain transport.

Evidence level: Strong

Checking access...

Accept terms to use AI Coach