amino acid
Tryptophan supplements
Half of the 605 tryptophan supplements in the NIH label database that print an amount list 123 mg or less per serving; the middle half list 55 mg to 471 mg (DSLD version 9.4.0, January 2026). The 58 products whose only supplement ingredient is tryptophan list a median of 500 mg.
- Products listing it
- 945605 print an amount; 332 list it inside a blend without an amount
- Median per serving
- 123 mgmiddle half 55 mg to 471 mg
How much tryptophan do supplements contain?
The median product lists 123 mg per serving. One in ten lists 20 mg or less, one in ten 628.4 mg or more. The amount printed most often is 500 mg (64 products).
Products by amount of tryptophan per serving
605 products, log scale; extreme 0.2% at each end left out of the drawing.
| Amount per serving | Products | For example |
|---|---|---|
| 500 mg | 64 | Sleep Soundly Advanced (GNC Preventive Nutrition); Sleep All Nite Naturals (SeniorLife Health); L-Tryptophan (PureBulk.com) |
| 100 mg | 62 | Crash Blue Razz (ProSupps); Crash Fruit Punch (ProSupps); Zinc Magnesium Amino Complex (GNC Pro Performance) |
| 50 mg | 39 | Amino 1000 (Universal); Amino Welch's Grape (GHOST); Melatonin Complex (SuperiorLabs) |
| 1,000 mg | 30 | Optimized TryptoPure Plus (Life Extension); ZZZ Razzzberry Lemonade (Core Nutritionals); L-Trytophan 1000 mg (The Vitamin Shoppe) |
| 75 mg | 27 | EAA Pure Blue Raspberry (NutraBio); EAA Pure Strawberry Lemon Bomb (NutraBio); Aminogex Ultra Watermelon (VMI Sports) |
| 250 mg | 26 | GH Stack Grape Flavor (Universal); Women's Advanced Protein Cinnamon Bun (GNC Pro Performance AMP); Women's Advanced Protein Chocolate Cupcake (GNC Pro Performance AMP) |
| 55 mg | 21 | Intra Blast Raw Unflavored (NutraBio); Intra Blast Blueberry Lemonade (NutraBio); Leg Day New York Punch (NutraBio) |
| 60 mg | 18 | Anutra Grain (Anutra); Amino 2250 (Universal); Replenish Orange Twist (Arms Race Nutrition) |
| 20 mg | 16 | Night Time Fat Burner (HerbTonics); Essential Aminos (Pure Encapsulations); 5-HTP Plus 200 mg (Dr. Emil Nutrition) |
| 200 mg | 15 | Night Pack: New Mood (Onnit); GI Guard PM (Protocol For Life Balance); Raw Organic 100% Plant-Based Protein Very Berry (Natural Factors) |
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
Which products list the most tryptophan?
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).
- L-TryptophanVitamin Research Products2,000 mg
- L-Tryptophan 1,000 mgSource Naturals2,000 mg
- L-TryptophanKlaire Labs2,000 mg
- 100% Whey Protein ApfelstrudelBody Attack Sports Nutrition1,940 mg
- Matrix 1.0 Milk ChocolateSyntrax1,900 mg
- Ultra-Pro VanillaDouglas Laboratories1,675 mg
- Ultra-Pro CarobDouglas Laboratories1,675 mg
- L-TryptophanSource Naturals1,500 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2012 list a median of 180 mg; those entered in 2025, 75 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2012 | 32 | 180 mg |
| 2013 | 39 | 215 mg |
| 2014 | 26 | 367 mg |
| 2015 | 22 | 100 mg |
| 2017 | 29 | 250 mg |
| 2018 | 23 | 500 mg |
| 2020 | 62 | 100 mg |
| 2021 | 65 | 96.5 mg |
| 2022 | 63 | 106 mg |
| 2023 | 50 | 150 mg |
| 2024 | 73 | 100 mg |
| 2025 | 70 | 75 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing tryptophan by DSLD product type
Brands listing it most: NutraBio (38), Douglas Laboratories (19), Axe & Sledge Supplements (15), Arms Race Nutrition (12), GNC Beyond Raw (11), Muscle Feast (11), Metabolic Nutrition (10), GHOST (9), Bronson (8), Universal (8).
Every product listing tryptophan
945 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.
- All Natural Meal Replacement Shake VanillaOx Nutrition · off the market500 mg
- All Plant Protein PowderNutrilite · off the market150 mg
- All-Basic-Plus 750 MilligramsMontiffin a blend
- All9 Amino Cola Lime TwistDymatize · off the marketin a blend
- All9 Amino Fruit Fusion RushDymatizein a blend
- All9 Amino Jolly Green AppleDymatize · off the marketin a blend
- All9 Amino Juicy WatermelonDymatizein a blend
- All9 Amino Orange CranberryDymatizein a blend
- AloeAminos Power NutritionDr. LaMar's Productsin a blend
- Alpha EAA Blueberry LemonadeNutraBio75 mg
- Alpha EAA Cherry Lime SlushNutraBio Performance75 mg
- Alpha EAA Cherry Lime SlushNutraBio75 mg
- Alpha EAA Dragonfruit CandyNutraBio · off the market75 mg
- Alpha EAA Dragonfruit CandyNutraBio Performance75 mg
- Alpha EAA Grape Berry CrushNutraBio · off the market75 mg
- Alpha EAA New York PunchNutraBio · off the market75 mg
- Alpha EAA Peach TeaNutraBio75 mg
- Alpha EAA Strawberry Lemon BombNutraBio · off the market75 mg
- AlterilBiotab Nutraceuticals · off the market666 mg
- Alteril All Natural Sleep Aid with L-TryptophanGlobal Product Management665 mg
- Alteril All Natural Sleep Aid with L-TryptophanAlteril200 mg
- Alteril Natural Sleep AidAlteril665 mg
- Amino 1000Universal50 mg
- Amino 1000NOW · off the market30 mg
- Amino 1900Universal100 mg
- Amino 2000Prolab · off the market37 mg
- Amino 2250Universal Nutrition · off the market60 mg
- Amino 2250Universal60 mg
- Amino 2700Universal105 mg
- Amino Acid 750 mgBluebonnet40 mg
- Amino Acid CapsulesBluebonnet · off the market40 mg
- Amino Acid ComplexVitaCeutical Labs14 mg
- Amino Acid ComplexBronson12 mg
- Amino Acid ComplexBronson Laboratories12 mg
- Amino Acid Complex With CalciumSundown Naturalsin a blend
- Amino Acids 1000 mgBluebonnet40 mg
- Amino Acids FormulaMartin Avenue Pharmacy13 mg
- Amino Blue RaspberryGHOST100 mg
- Amino ComplexThe Vitamin Shoppe38 mg
- Amino Complex BerryThorne FX · off the market20 mg
- Amino Complex BerryLife Time Fitness · off the market20 mg
- Amino Complex Berry FlavorThorne Research · off the market20 mg
- Amino Complex Berry FlavoredThorne20 mg
- Amino Complex LemonThorne FX · off the market20 mg
- Amino Complex Lemon FlavorThorne Research · off the market20 mg
- Amino Complex Lemon FlavoredThorne20 mg
- Amino Decanate Citrus LimeMuscleMedsin a blend
- Amino Decanate WatermelonMuscleMedsin a blend
- Amino EAA BCAA Hydration Sonic Ocean WaterGHOST100 mg
- Amino EAA BCAA Hydration Warheads Sour Green AppleGHOST50 mg