Product Overview
General Information
- Product Name
- L-Tryptophan USP, 500 mg, 60 capsules
- Brand
- Life Extension Products in this brand
- Bar Code
- 8 76096 00003 9
- Net Contents
- 60 Capsules
- Market Status
- On Market
- Date entered into DSLD
- 1 November 2026
- DSLD ID
- 365196
Product Classification
- Product Type
- Amino acid/Protein
- Supplement Form
- Capsule
- Dietary Claim(s) or Use(s)
- Structure/Function
- Intended Target Group(s)
- Adult (18 - 50 Years)
Label Information
Supplement Facts
- Daily Value (DV) Target Group(s)
- —
- Serving Size
- 1 capsule
- Alternate Serving Size
- —
- Servings per Container
- 60
| Pure L-Tryptophan | 500 mg |
Other ingredients: gelatin capsule, vegetable stearic acid, silica, plant cellulose.
Label Statements
FDA Statement of Identity: Dietary Supplement
Suggested/Recommended/Usage/Directions: Adults, Take one or two capsules 15 to 30 minutes before bedtime with 6-8 oz. of water or a small amount of carbohydrate such as diluted fruit or vegetable juice to facilitate uptake. Should not be taken with milk, hot fluids, or other proteins (recommended 1 hour to either side of protein). Make sure that a good B-Complex is taken during the day with a balance of B-2 (Riboflavin), B-3 (Niacin), and especially B-6 (Pyridoxine) to maximize serotonin production. Do not exceed 5 capsules or 2.5 grams per day unless directed by your physician.
Precautions re: All Other: If you are pregnant, nursing, or using medications (most importantly certain classes of anti-depressant drugs), consult your doctor before using. As with any dietary supplement, if any adverse reaction should occur, discontinue use.
Precautions re: Pregnant or Nursing or Prescription Medications: If you are pregnant, nursing, or using medications (most importantly certain classes of anti-depressant drugs), consult your doctor before using.
Brand Information
Source: Reverse Age Lab, November 2026
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Labels only: each label is shown as printed on the bottle, with no grades, rankings or advice. A label in this database is not an endorsement of the product. Read the label on the bottle you buy: makers change their formulas. Reverse Age Lab is not affiliated with, or endorsed by, the National Institutes of Health or its Office of Dietary Supplements. The original labels come from the NIH’s public-domain data; the labels since are read by us. Search the Dietary Supplement Label Database.