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 2 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 (5-Hydroxytryptophan) 200 mgProtocol For Life Balance200 mg
• 5-HTP (5-Hydroxytryptophan) 50 mgPure Encapsulations50 mg
• 5-HTP (Griffonia Seed Extract)PureBulk.com200 mg
• 5-HTP (Griffonia Seed Extract)BulkSupplements.com200 mg
• 5-HTP (Griffonia Simplicifolia Extract) 100 mgWindmill100 mg
• 5-HTP + Vitamin B6SmarterVitamins200 mg
• 5-Htp 100New You Vitamins · off the market100 mg
• 5-Htp 100DC100 mg
• 5-Htp 100Wonder Laboratories100 mg
• 5-HTP 100 mgRadiance100 mg
• 5-HTP 100 mgVitaCeutical Labs100 mg
• 5-HTP 100 mgPhysician's Preference · off the market100 mg
• 5-HTP 100 mgSimplySupplements100 mg
• 5-HTP 100 mgIntensive Nutrition · off the market100 mg
• 5-HTP 100 mgKaruna100 mg
• 5-HTP 100 mgBronson Laboratories100 mg
• 5-HTP 100 mgNatural Factors Stress-Relax · off the market100 mg
• 5-HTP 100 mgSolgar100 mg
• 5-HTP 100 mgCVS Health200 mg
• 5-HTP 100 mgVitamer Laboratories100 mg
• 5-HTP 100 mgProThera · off the market100 mg
• 5-HTP 100 mgHighland Laboratories100 mg
• 5-HTP 100 mgBulletproof100 mg
• 5-HTP 100 mgSpring Valley200 mg
• 5-HTP 100 mgMRM · off the market100 mg
• 5-HTP 100 mgNOW100 mg
• 5-HTP 100 mgAbsorb Health100 mg
• 5-HTP 100 mgVillage Vitality · off the market100 mg
• 5-HTP 100 mgtnvitamins100 mg
• 5-HTP 100 mgNova Nutritions100 mg
• 5-HTP 100 mgZenwise Health100 mg
• 5-HTP 100 mgNutraFitz Naturals100 mg
• 5-HTP 100 mgNature's Trove100 mg
• 5-HTP 100 mgNature's Bounty100 mg
• 5-HTP 100 mgViva Vitamins100 mg
• 5-HTP 100 mgNatural Factors100 mg
• 5-HTP 100 mgMental Refreshment100 mg
• 5-HTP 100 mgPatient One 1 MediNutritionals100 mg
• 5-HTP 100 mgAN Amazing Nutrition Amazing Formulas100 mg
• 5-HTP 100 mgAllergy Research Group100 mg
• 5-HTP 100 mgNutriCology100 mg
• 5-HTP 100 mgWoodstock Vitamins100 mg
• 5-HTP 100 mgSupplement Spot100 mg
• 5-HTP 100 mgHealthy Origins100 mg
• 5-HTP 100 mgNutricost100 mg
• 5-HTP 100 mgBest Naturals100 mg
• 5-HTP 100 mgCalifornia Gold Nutrition100 mg
• 5-HTP 100 mgMetabolic Maintenance100 mg
• 5-HTP 100 mgNested Naturals100 mg
• 5-HTP 100 mgGNC100 mg

Where next?

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