amino acid

5-HTP supplements

Half of the 676 5-HTP supplements in the NIH label database that print an amount list 100 mg or less per serving; the middle half list 50 mg to 100 mg (DSLD version 9.4.0, January 2026). The 156 products whose only supplement ingredient is 5-HTP list a median of 100 mg.

How much 5-HTP do supplements contain?

The median product lists 100 mg per serving. One in ten lists 25 mg or less, one in ten 200 mg or more. The amount printed most often is 100 mg (222 products).

Which products list the most 5-HTP?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• 5-HtpThrive Naturals600 mg
• Sleep AidHTLT Essentials600 mg
• SeratoninNutriCology400 mg
• SwaggerForce Factor400 mg
• SeratoninAllergy Research Group400 mg
• MasterMindAdvanced Nutrition by Zahler400 mg
• 5-HTP Capsules 400mgBulkSupplements.com400 mg
• MorphoremMN Morphogen Nutrition300 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2012 list a median of 45 mg; those entered in 2025, 75 mg.

In which products and brands?

Brands listing it most: Natrol (31), Pure Encapsulations (11), NOW (10), Allergy Research Group (9), Higher Nature (8), Designs for Health (8), Natural Factors Stress-Relax (7), Xtendlife (7), Doctor's Best (7), XYMOGEN (6).

Every product listing 5-HTP

903 products, A to Z by name (page 4 of 19), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• 5-HTP 50 mgSwanson Premium Brand · off the market50 mg
• 5-HTP 50 mgMRM · off the market50 mg
• 5-HTP 50 mgNOW50 mg
• 5-HTP 50 mgSeeking Health50 mg
• 5-HTP 50 mgSuperior Source50 mg
• 5-HTP 50 mgSuperSmart · off the market100 mg
• 5-HTP 50 mgAllergy Research Group50 mg
• 5-HTP 50 mgNutriCology50 mg
• 5-HTP 50 mgFoster Regal50 mg
• 5-HTP 50 mgDaVinci Laboratories of Vermont · off the market50 mg
• 5-HTP 50 mgHealthy Origins50 mg
• 5-HTP 50 mgBest Naturals50 mg
• 5-HTP 50 mgSource Naturals Serene Science100 mg
• 5-HTP 50 mgMetabolic Maintenance50 mg
• 5-HTP 50 mgDouglas Cooper Co.50 mg
• 5-HTP 50 mgKlaire Labs · off the market50 mg
• 5-HTP 50 mgSource Naturals · off the market100 mg
• 5-HTP 50 mgBIOVEA50 mg
• 5-HTP 50 mgJarrow Formulas50 mg
• 5-HTP 50 mgSwanson50 mg
• 5-HTP 50 mgMRM Nutrition50 mg
• 5-HTP 50 mgH&B Holland & Barrett50 mg
• 5-HTP 50 mgDaVinci Laboratories50 mg
• 5-HTP 50 mgNeurobiologix50 mg
• 5-HTP 50 mgNatrol50 mg
• 5-HTP 50 mgCountry Life50 mg
• 5-HTP 50 mgSolaray50 mg
• 5-HTP 50 mg Fast Dissolve Natural Wild Berry FlavorNatrol50 mg
• 5-HTP 75 mgSuperior Source75 mg
• 5-HTP Capsules 100 mgBulkSupplements.com100 mg
• 5-HTP Capsules 200 mgBulkSupplements.com200 mg
• 5-HTP Capsules 400mgBulkSupplements.com400 mg
• 5-HTP ComplexHigher Nature50 mg
• 5-HTP ComplexOrzax100 mg
• 5-Htp CrXYMOGEN · off the market100 mg
• 5-HTP Elite Natural Raspberry FlavorCarlson · off the market50 mg
• 5-HTP Enhanced With Vitamins B6 & CDoctor's Best · off the market100 mg
• 5-HTP Enhanced with Vitamins B6 and CDoctor's Best100 mg
• 5-HTP Extended Release 200 mgSeeking Health200 mg
• 5-HTP Extra StrengthArazo Nutrition · off the market200 mg
• 5-HTP ExtractHerbadiet100 mg
• 5-HTP GoldNutrigold · off the market100 mg
• 5-HTP Gold 100 mgNutriGold · off the market100 mg
• 5-HTP Griffonia Seed Extract 200 mgMicro Ingredients200 mg
• 5-HTP L-5-Hydroxy Tryptophan 100 mgVitamin World200 mg
• 5-HTP L-5-Hydroxy Tryptophan 200 mgVitamin World200 mg
• 5-HTP L-5-Hydroxy-Tryptophan 100 mgPuritan's Pride200 mg
• 5-HTP L-5-Hydroxy-Tryptophan 200 mgPuritan's Pride200 mg
• 5-HTP L-5-HydroxytryptophanHolistic Healing Center · off the market50 mg
• 5-HTP L-5-HydroxytryptophanAllergy Research Group · off the market50 mg

Where next?

• Check an amount of 5-HTP
• Labels above the upper limit
• All ingredients