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 3 of 19), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Amino Evolution Cherry Iceproject#150 mg
- Amino FuelTwinlab · off the market89 mg
- Amino Fuel 1000Twinlab72 mg
- Amino Gel-CapsProlab · off the market16 mg
- Amino Gram ForteDouglas Laboratories13 mg
- Amino IV Black CherryPESciencein a blend
- Amino IV Orange DreamsiclePESciencein a blend
- Amino IV Raspberry GrapePESciencein a blend
- Amino IV Sour Green ApplePESciencein a blend
- Amino IV Strawberry LemonadePESciencein a blend
- Amino K.E.M.Evogen38 mg
- Amino K.E.M. Much PunchEvogen75 mg
- Amino K.E.M. Sour WatermelonEvogen75 mg
- Amino RepletePure Encapsulations60 mg
- Amino Sonic Cherry LimeadeGHOST50 mg
- Amino SportBiotics Research Corporation18 mg
- Amino Stack Blue RaspberryImage Sportsin a blend
- Amino SupremeBricker Labs38 mg
- Amino SynergyKaged Musclein a blend
- Amino Synergy + Caffeine Raspberry LemonadeKaged Muscle · off the marketin a blend
- Amino Synergy + Purcaf Caffeine Peach TeaKaged Musclein a blend
- Amino Synergy + Purcaf Caffeine Raspberry LemonadeKaged Musclein a blend
- Amino Synergy OrangeKaged Musclein a blend
- Amino Synergy Raspberry LemonadeKaged Muscle · off the marketin a blend
- Amino Synergy Raspberry LemonadeKagedin a blend
- Amino Ten Wild StrawberryMRI2.7 mg
- Amino Ten Workout Catalyst Wild StrawberryMRI Performance · off the marketin a blend
- Amino Warheads Sour Green AppleGhost150 mg
- Amino Welch's GrapeGHOST50 mg
- Amino-9 EssentialsNOW Sports88 mg
- Amino-9 Essentials PowderNOW Sports117 mg
- Amino-NRPure Encapsulations33 mg
- Amino2 Fruit PunchMYOGENIXin a blend
- Amino2 OrangeMYOGENIXin a blend
- AminocapsIntensive Nutrition · off the market123 mg
- AminoEV Rocket Popproject#150 mg
- Aminogex Ultra Miami ViceVMI Sports75 mg
- Aminogex Ultra Red Fruit CandyVMI Sports75 mg
- Aminogex Ultra Tropical MangoVMI Sports75 mg
- Aminogex Ultra WatermelonVMI Sports75 mg
- AminoLean Max Maui PineappleRSP50 mg
- AminoLean Max Passion Fruit PunchRSP90 mg
- AminoLean Max Sweet PeachRSP50 mg
- AminoMeal Select ChocolateMoss Nutritionin a blend
- AminoMeal Select Orange-PineappleMoss Nutritionin a blend
- AminoMeal Select VanillaMoss Nutritionin a blend
- AminoplusDouglas Laboratoriesin a blend
- AminopowerplusTruehope84 mg
- AminosKion3.5 mg
- Aminos BerryEXOS Performance Nutrition · off the market20 mg