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 3 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 100 mgBasic Vitamins100 mg
• 5-HTP 100 mgPure Encapsulations100 mg
• 5-HTP 100 mgSource Naturals Serene Science100 mg
• 5-HTP 100 mgFoster Regal100 mg
• 5-HTP 100 mgDoctor's Best100 mg
• 5-HTP 100 mgEveryday Health100 mg
• 5-HTP 100 mgJarrow Formulas100 mg
• 5-HTP 100 mgBluebonnet100 mg
• 5-HTP 100 mgPure Nootropics100 mg
• 5-HTP 100 mgMRM Nutrition100 mg
• 5-HTP 100 mgProCaps Laboratories100 mg
• 5-HTP 100 mgKlaire Labs · off the market100 mg
• 5-HTP 100 mgProtocol For Life Balance100 mg
• 5-HTP 100 mgNatureWise100 mg
• 5-HTP 100 mgPortions Master100 mg
• 5-HTP 100 mgNatrol100 mg
• 5-HTP 100 mgSuperSmart100 mg
• 5-HTP 100 mg (Griffonia Extract)Windmill · off the market100 mg
• 5-HTP 100 mg Extra StrengthSwanson100 mg
• 5-HTP 100 mg Fast Dissolve Mixed BerryNatrol100 mg
• 5-HTP 100 mg Fast Dissolve Mixed Berry Natural FlavorNatrol · off the market100 mg
• 5-HTP 100 mg plus B6Patient One 1 MediNutritionals100 mg
• 5-HTP 100 mg Time ReleaseNatrol100 mg
• 5-HTP 100 mg Wild BerryNatrol · off the market100 mg
• 5-HTP 100 mg Wild Berry FlavorNatrol · off the market100 mg
• 5-HTP 200 mgNOW200 mg
• 5-HTP 200 mgNova Nutritions200 mg
• 5-HTP 200 mgBronson200 mg
• 5-HTP 200 mgNutraBio200 mg
• 5-HTP 200 mgAN Amazing Nutrition Amazing Formulas200 mg
• 5-HTP 200 mgNutricost200 mg
• 5-HTP 200 mgNature's Truth200 mg
• 5-HTP 200 mg Maximum StrengthSwanson200 mg
• 5-HTP 200 mg Time ReleaseNatrol200 mg
• 5-HTP 200 mg TR Time ReleaseNatrol · off the market200 mg
• 5-Htp 2000MaritzMayer Laboratories · off the market200 mg
• 5-HTP 200mgBest Naturals200 mg
• 5-HTP 300 mg UnflavoredNutricost300 mg
• 5-HTP 5-Hydroxy-L-Trytophan 100LifeLink100 mg
• 5-HTP 5-Hydroxy-L-Trytophan 25LifeLink25 mg
• 5-HTP 5-Hydroxy-L-Trytophan 50LifeLink50 mg
• 5-HTP 5-Hydroxytryptophan 100 mgNatural Factors Stress-Relax100 mg
• 5-HTP 5-Hydroxytryptophan 50 mgNatural Factors Stress-Relax50 mg
• 5-HTP 50 mgPhysician's Preference · off the market50 mg
• 5-HTP 50 mgNature's Harmony50 mg
• 5-HTP 50 mgIntensive Nutrition · off the market50 mg
• 5-HTP 50 mgProThera · off the market50 mg
• 5-HTP 50 mgWindmill50 mg
• 5-HTP 50 mgIndiana Botanic Gardens50 mg
• 5-HTP 50 mgHighland Laboratories50 mg

Where next?

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