Skip to content

L-Tryptophan 500 mg 60 vegcaps

Liquid error (product-form line 106): Could not find asset snippets/wishlist-product.liquid

L-tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. In the brain, tryptophan is converted into serotonin, a neurotransmitter involved in feelings of well-being, calmness, personal security, and relaxation.* It also plays a role in the regulation of appetite and synchronization of sleep patterns.* Every lot of Protocol For Life Balance® L-tryptophan is tested to be free of Peak E and microbial contamination.

Suggested Usage: As a dietary supplement, take 1-2 capsules twice daily on an empty stomach, with final dose at bedtime, or as directed by a health care practitioner.


Caution/Interactions: Tryptophan supplements may interact with CNS depressants, antidepressants (SSRIs,MAOIs), and other serotonergic agents such as St. John's Wort and 5-HTP. Consult your healthcare practitioner if you are taking medications or herbs, are pregnant/nursing, or if you have a liver impairment. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery.

Contains no sugar, salt, yeast, wheat, gluten, soy, milk, egg, shellfish, or preservatives

• Encourages Positive Mood*
• Supports Relaxation & Restful Sleep*

Serving Size:2 VCap

Servings Per Container:30


Amount Per Serving
L-Tryptophan (2-amino-3-indolylpropanoic acid) 1 g

Other ingredients:
Cellulose (capsule), Cellulose powder, Stearic Acid (vegetable source)