The supplement product directory

Look up any bottle by name, brand, or barcode to see exactly what’s inside and how it interacts with medications. 214,830 products, all cross-linked to their ingredients.

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Showing products starting with “L” (10,537) Clear ×
L-Tryptophan 500 mg by Metabolic Maintenance Capsule 60 Capsule(s) UPC 8 38287 00149 2 Ingredients & interactions → L-Tryptophan 500 mg by NOW Capsule 60 Veg Capsule(s) UPC 7 33739 00166 5 Off market Ingredients & interactions → L-Tryptophan 500 mg by Protocol For Life Balance Capsule 60 Veg Capsule(s) UPC 7 07359 10166 1 Off market Ingredients & interactions → L-Tryptophan 500 mg by Source Naturals Capsule 60 Capsule(s) UPC 0 21078 01984 8 Off market Ingredients & interactions → L-Tryptophan 500 mg by Doctor's Best Capsule 90 Veggie Cap(s) UPC 7 53950 00126 8 Ingredients & interactions → L-Tryptophan 500 mg by Jarrow Formulas Capsule 60 Vegetarian Capsule(s) UPC 7 90011 15056 5 Off market Ingredients & interactions → L-Tryptophan 500 mg by Life Extension Capsule 90 Vegetarian Capsule(s) UPC 7 37870 17229 1 Ingredients & interactions → L-Tryptophan 500 mg by BIOVEA Capsule 60 Vegetarian Capsule(s) UPC 8 18423 02288 8 Ingredients & interactions → L-Tryptophan 500 mg by AN Amazing Nutrition Amazing Formulas Capsule 120 Capsule(s) UPC 8 10180 02044 2 Ingredients & interactions → L-Tryptophan 500 mg by Best Naturals Capsule 60 Capsule(s) UPC 8 17716 01554 5 Ingredients & interactions → L-Tryptophan 500 mg by Advanced Nutrition by Zahler Capsule 60 Capsule(s) UPC 8 48998 08124 9 Ingredients & interactions → L-Tryptophan 500 mg by Nutricost Capsule 120 Capsule(s) UPC 7 02669 93307 0 Off market Ingredients & interactions → L-Tryptophan 500 mg by The Vitamin Shoppe Capsule 120 Veggie Capsule(s) UPC 7 66536 02538 1 Off market Ingredients & interactions → L-Tryptophan 500 mg by Swanson Capsule 60 Capsule(s) UPC 0 87614 11502 3 Off market Ingredients & interactions → L-Tryptophan 500 mg by California Academy of Health Capsule 60 Capsule(s) UPC 8 96291 00241 6 Ingredients & interactions → L-Tryptophan 500 mg by HBC Protocols Capsule 180 Capsule(s) · 500 mg UPC 7 90011 15056 5 Ingredients & interactions → L-Tryptophan 500 mg by Nova Nutritions Capsule 120 Capsule(s) UPC 7 32363 27278 6 Ingredients & interactions → L-Tryptophan 500 mg by VitalBulk Capsule Ingredients & interactions → L-Tryptophan 500 mg by Swanson Ultra Capsule 90 Veggie Cap(s) UPC 0 87614 02372 4 Ingredients & interactions → L-Tryptophan 500 mg by Swanson Premium Brand Capsule 60 Capsule(s) UPC 0 87614 11502 3 Off market Ingredients & interactions → L-Tryptophan 500 mg by Bronson Laboratories Capsule 90 Capsule(s) UPC 7 16563 37101 2 Ingredients & interactions → L-Tryptophan 500 mg by Bluebonnet Capsule 60 Vegetable Capsule(s) UPC 7 43715 00094 0 Ingredients & interactions → L-Tryptophan 500 mg by LuckyVitamin Capsule 120 Veg Capsule(s) UPC 8 10026 42151 8 Ingredients & interactions →

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The latest supplement products added to our catalog — each one ready to check against your medications.

Dr. Brian Staiger, PharmD

Curated & reviewed by Dr. Brian Staiger, PharmD, BCPS and the HelloPharmacist pharmacy team.

Interaction data is built on Natural Medicines (Therapeutic Research Center) and official product labels from the NIH Dietary Supplement Label Database. Our data sources · Editorial Policy.

This directory is for information only and does not replace professional medical advice. It may not capture every possible interaction. Always confirm with your pharmacist or doctor before starting, stopping, or changing any medication or supplement.