Amino acid/Protein

L-Tryptophan 500 mg

by Protocol For Life Balance · Capsule

Supplement facts from the label of L-Tryptophan 500 mg by Protocol For Life Balance: L-Tryptophan 1.0 Gram(s).

Label of L-Tryptophan 500 mg, Protocol For Life Balance
Label image: NIH DSLD · full label (PDF)
Serving size1–2 Veg Capsule(s)
Servings per container30
Most servings a day on the label2
TypeAmino acid/Protein
Barcode707359101661
Label recordDSLD 326453 · entered 2025-01-23

Supplement Facts

IngredientPer serving% DVUpper limit (adults)
L-Tryptophan1.0 Gram(s)——

Upper limits: NIH ODS Fact Sheets for Health Professionals. Compared only where the unit converts and the limit applies to the form on the label.

On the label

For: Vegan · Vegetarian · Adult (18 - 50 Years) · Gluten Free · Dairy Free

Claim types: Nutrient · All Other · Structure/Function

Suggested/Recommended/Usage/Directions: Suggested Usage: Take 1-2 capsules twice daily on an empty stomach, with final dose at bedtime, or as directed by your healthcare practitioner.

Formula re: Contains: How It Works: 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.

Formulation re: Does NOT Contain: Every lot of Protocol For Life Balance L-Tryptophan is tested to be free of Peak E and microbial contamination.

Precautions re: Pregnant or Nursing or Prescription Medications: Cautions/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 liver impairment.

Precautions re: All Other: May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery.

Formulation re: Other: Encourages positive mood Supports relaxation & restful sleep

This page repeats what the label says and the official upper limits for healthy adults. It is not medical advice: ask a doctor, pharmacist or registered dietitian about your own intake, especially if you are pregnant, take medicines or have a health condition.

Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).