L-Tryptophan

amino acid

181

products

Updated April 2026

Dosage Range

0 mgavg 305.88 mg2000 mg

L-Tryptophan is found in 399 supplement products from 96 brands. Dosages range from 0 to 2000 mg, with an average of 305.88. The most common form is Capsule.

Top 5 Highest-Dosage L-Tryptophan Supplements

L-Tryptophan by Klaire Labs — 2000 mg
L-Tryptophan 1500 mg by NusaPure — 1500 mg
Serotonin Brain Food by NS Natural Stacks — 1250 mg
L-Tryptophan 1,000 mg by AN Amazing Nutrition Amazing Formulas — 1000 mg
ZZZ Cherry Bomb by Core Nutritionals — 1000 mg

L-Tryptophan by Klaire Labs has the highest L-Tryptophan dosage at 2000 mg. EAA Pure Blue Raspberry by NutraBio has the lowest at 75 mg.

All Products

showing 100 of 181

Product	Brand	Amount	Daily Value	Form
L-Tryptophan	Klaire Labs	2000 mg	—	Capsule
L-Tryptophan 1500 mg	NusaPure	1500 mg	—	Capsule
Serotonin Brain Food	NS Natural Stacks	1250 mg	—	Capsule
L-Tryptophan 1,000 mg	AN Amazing Nutrition Amazing Formulas	1000 mg	—	Tablet or Pill
ZZZ Cherry Bomb	Core Nutritionals	1000 mg	—	Powder
L-Tryptophan	Douglas Laboratories	1000 mcg	—	Capsule
L-Tryptophan 500 mg	California Academy of Health	1000 mg	—	Capsule
L-Tryptophan 1000 mg	Protocol For Life Balance	1000 mg	—	Tablet or Pill
L-Tryptophan 1000 mg	SuperSmart	1000 mg	—	Tablet or Pill
ZZZ Pineapple Peach	Core Nutritionals	1000 mg	—	Powder
L-Tryptophan Powder	Herbadiet	1000 mg	—	Powder
Sleep	Kion	1000 mg	—	Capsule
ZZZ Knockout Punch	Core Nutritionals	1000 mg	—	Powder
Sleep Honey Lavender Flavored	Kion	1000 mg	—	Powder
L-Tryptophan 1000 mg	AN Amazing Nutrition Amazing Formulas	1000 mg	—	Tablet or Pill
L-Tryptophan 1000 mg	Best Naturals	1000 mg	—	Tablet or Pill
ZZZ Razzzberry Lemonade	Core Nutritionals	1000 mg	—	Powder
Superhuman Sleep Slaughtermelon Watermelon Lemonade	Alpha Lion	1000 mg	—	Powder
L-Trytophan 1000 mg	The Vitamin Shoppe	1000 mg	—	Tablet or Pill
Optimized Tryptophan Plus	Life Extension	1000 mg	—	Capsule
ZZZ Blueberry Lemonade	Core Nutritionals	1000 mg	—	Powder
L-Tryptophan Powder	NOW	950 mg	—	Powder
Natural Sleep Formula	SuperSmart	700 mg	—	Tablet or Pill
L-Tryptophan	Herbadiet	600 mg	—	Capsule
Relax-ALL	MRM Nutrition	600 mg	—	Capsule
100% Whey Protein Fuel Chocolate Surge	Twinlab	560 mg	—	Powder
100% Whey Protein Fuel Vanilla Slam	Twinlab	560 mg	—	Powder
100% Whey Protein Fuel Strawberry Smash	Twinlab	560 mg	—	Powder
L-Tryptophan 500 mg	Best Naturals	500 mg	—	Capsule
L-Tryptophan	BulkSupplements.com	500 mg	—	Powder
Density	Beverly International	500 mg	—	Tablet or Pill
L-Tryptophan 500 mg Capsules	BulkSupplements.com	500 mg	—	Capsule
L-Tryptophan 500 mg	Advanced Nutrition by Zahler	500 mg	—	Capsule
L-Tryptophan	Hard Rhino	500 mg	—	Powder
L-Tryptophan 500 mg	Nutricost	500 mg	—	Capsule
L-Tryptophan (250 mg)	BulkSupplements.com	500 mg	—	Capsule
L-Tryptophan 500 mg	Swanson	500 mg	—	Capsule
L-Tryptophan 500 mg	Doctor's Best	500 mg	—	Capsule
L-Tryptophan 500 mg	Bluebonnet	500 mg	—	Capsule
L-Tryptophan 500 mg	Bronson Laboratories	500 mg	—	Capsule
L-Tryptophan 500 mg	AN Amazing Nutrition Amazing Formulas	500 mg	—	Capsule
100% Pure L-Tryptophan 500 Milligrams	NutraBio	500 mg	—	Capsule
I-Tryptophan	Isotonix	500 mg	—	Powder
L-Tryptophan 500 mg	Natural Grocers by Vitamin Cottage	500 mg	—	Capsule
100% Pure L-Tryptophan	NutraBio	500 mg	—	Powder
L-Tryptophan 500 mg	Jarrow Formulas	500 mg	—	Capsule
L-Tryptophan 500 mg	longlifenutri	500 mg	—	Capsule
L-Tryptophan	Metabolic Maintenance	500 mg	—	Capsule
L-Tryptophan 500 mg	Life Extension	500 mg	—	Capsule
L-Tryptophan 500 mg	The Vitamin Shoppe	500 mg	—	Capsule
HIBERN8	Nutrex Research	500 mg	—	Capsule
Best L-Tryptophan 500 mg	Doctor's Best	500 mg	—	Capsule
Best L-Tryptophan Powder	Doctor's Best	500 mg	—	Powder
Twilight Time	Progressive Professional from Progressive Laboratories	500 mg	—	Capsule
Whey Protein Gold Isolate Plus Natural Vanilla Flavor	California Academy of Health	471 mg	—	Powder
Whey Protein Gold Isolate Plus Natural Chocolate Flavor	California Academy of Health	458 mg	—	Powder
Gorilla Mode EAAS Lemon Lime	Gorilla Mind	450 mg	—	Powder
L-Tryptophan	Earthborn Elements	450 mg	—	Capsule
Gorilla Mode EAAS Jungle Juice	Gorilla Mind	450 mg	—	Powder
Whey Protein Isolate Chocolate	BioSteel	413 mg	—	Powder
Whey Protein Isolate Vanilla	BioSteel	413 mg	—	Powder
New Mood	Onnit	400 mg	—	Capsule
Melt Blue Raspberry	Bowmar Nutrition	400 mg	—	Powder
Advanced Recovery Formula Chocolate	BioSteel	386 mg	—	Powder
Advanced Recovery Formula Vanilla	Biosteel	385 mg	—	Powder
PRE Watermleon	Bowmar Nutrition	375 mg	—	Powder
BCAA + EAA	Steel	300 mg	—	Powder
Sleep Optimizer	Jarrow Formulas	300 mg	—	Capsule
Sleep SR	Kaged Muscle	275 mg	—	Capsule
GH Stack Grape Flavor	Universal	250 mg	—	Powder
Qualia Nootropic Energy Triple Berry Flavor	Qualia	250 mg	—	Liquid
Sleep	youtheory	250 mg	—	Powder
Sleep Nighttime Powder	youtheory	250 mg	—	Powder
OxyDrene NAD+ Enhancer	Novex Biotech	220 mg	—	Capsule
Oxydrene NAD+ Enhancer	Novex Biotech	220 mg	—	Capsule
Precision Amino Crisp Apple	GNC Beyond Raw	200 mg	—	Powder
Sleep Answer	Doctors' Preferred	200 mg	—	Capsule
Sleep-O-Max	Maxi Health	200 mg	—	Capsule
Cognitive Aminos	Pure Encapsulations	200 mg	—	Capsule
Precision Amino Peach Mango Tea	GNC Beyond Raw	200 mg	—	Powder
Night Pack: New Mood	Onnit	200 mg	—	Capsule
BCAA Kiwi Bluebery	Huge Nutrition	200 mg	—	Powder
GI Guard PM	Protocol For Life Balance	200 mg	—	Capsule
Precision Amino Gummy Worm	GNC Beyond Raw	200 mg	—	Powder
Sleep	Terra Origin	150 mg	—	Capsule
Nighttime Stress Relief	BioSchwartz	150 mg	—	Capsule
Healthy Sleep & Wake	Terra Origin	150 mg	—	Capsule
Amino-9 Essentials Powder	NOW Sports	117 mg	—	Powder
SleepMode	Evlution Nutrition	100 mg	—	Capsule
Garcinia Cambogia with Melatonin	Angry Supplements	100 mg	—	Tablet or Pill
Jocko Good Night	Jocko Fuel	100 mg	—	Capsule
Qualia Life	Qualia	100 mg	—	Capsule
Qualia Night	Qualia	100 mg	—	Capsule
ZMAg P.M.	GNC Beyond Raw	100 mg	—	Other (e.g. tea bag)
PEVArx	Innovus Pharmaceuticals	100 mg	—	Capsule
Skinny Dreams with Melatonin & Valerian Root	Angry Supplements	100 mg	—	Tablet or Pill
5-HTP Complex	Orzax	100 mg	—	Capsule
Zinc Magnesium Amino Complex	GNC Pro Performance	100 mg	—	Tablet or Pill
Amino-9 Essentials	NOW Sports	88 mg	—	Tablet or Pill
EAA Pure Blue Raspberry	NutraBio	75 mg	—	Powder

L-Tryptophan Klaire Labs

2000 mg— DVCapsule

L-Tryptophan 1500 mg NusaPure

1500 mg— DVCapsule

Serotonin Brain Food NS Natural Stacks

1250 mg— DVCapsule

L-Tryptophan 1,000 mg AN Amazing Nutrition Amazing Formulas

1000 mg— DVTablet or Pill

ZZZ Cherry Bomb Core Nutritionals

1000 mg— DVPowder

L-Tryptophan Douglas Laboratories

1000 mcg— DVCapsule

L-Tryptophan 500 mg California Academy of Health

1000 mg— DVCapsule

L-Tryptophan 1000 mg Protocol For Life Balance

1000 mg— DVTablet or Pill

L-Tryptophan 1000 mg SuperSmart

1000 mg— DVTablet or Pill

ZZZ Pineapple Peach Core Nutritionals

1000 mg— DVPowder

L-Tryptophan Powder Herbadiet

1000 mg— DVPowder

Sleep Kion

1000 mg— DVCapsule

ZZZ Knockout Punch Core Nutritionals

1000 mg— DVPowder

Sleep Honey Lavender Flavored Kion

1000 mg— DVPowder

L-Tryptophan 1000 mg AN Amazing Nutrition Amazing Formulas

1000 mg— DVTablet or Pill

L-Tryptophan 1000 mg Best Naturals

1000 mg— DVTablet or Pill

ZZZ Razzzberry Lemonade Core Nutritionals

1000 mg— DVPowder

Superhuman Sleep Slaughtermelon Watermelon Lemonade Alpha Lion

1000 mg— DVPowder

L-Trytophan 1000 mg The Vitamin Shoppe

1000 mg— DVTablet or Pill

Optimized Tryptophan Plus Life Extension

1000 mg— DVCapsule

ZZZ Blueberry Lemonade Core Nutritionals

1000 mg— DVPowder

L-Tryptophan Powder NOW

950 mg— DVPowder

Natural Sleep Formula SuperSmart

700 mg— DVTablet or Pill

L-Tryptophan Herbadiet

600 mg— DVCapsule

Relax-ALL MRM Nutrition

600 mg— DVCapsule

100% Whey Protein Fuel Chocolate Surge Twinlab

560 mg— DVPowder

100% Whey Protein Fuel Vanilla Slam Twinlab

560 mg— DVPowder

100% Whey Protein Fuel Strawberry Smash Twinlab

560 mg— DVPowder

L-Tryptophan 500 mg Best Naturals

500 mg— DVCapsule

L-Tryptophan BulkSupplements.com

500 mg— DVPowder

Density Beverly International

500 mg— DVTablet or Pill

L-Tryptophan 500 mg Capsules BulkSupplements.com

500 mg— DVCapsule

L-Tryptophan 500 mg Advanced Nutrition by Zahler

500 mg— DVCapsule

L-Tryptophan Hard Rhino

500 mg— DVPowder

L-Tryptophan 500 mg Nutricost

500 mg— DVCapsule

L-Tryptophan (250 mg)BulkSupplements.com

500 mg— DVCapsule

L-Tryptophan 500 mg Swanson

500 mg— DVCapsule

L-Tryptophan 500 mg Doctor's Best

500 mg— DVCapsule

L-Tryptophan 500 mg Bluebonnet

500 mg— DVCapsule

L-Tryptophan 500 mg Bronson Laboratories

500 mg— DVCapsule

L-Tryptophan 500 mg AN Amazing Nutrition Amazing Formulas

500 mg— DVCapsule

100% Pure L-Tryptophan 500 Milligrams NutraBio

500 mg— DVCapsule

I-Tryptophan Isotonix

500 mg— DVPowder

L-Tryptophan 500 mg Natural Grocers by Vitamin Cottage

500 mg— DVCapsule

100% Pure L-Tryptophan NutraBio

500 mg— DVPowder

L-Tryptophan 500 mg Jarrow Formulas

500 mg— DVCapsule

L-Tryptophan 500 mg longlifenutri

500 mg— DVCapsule

L-Tryptophan Metabolic Maintenance

500 mg— DVCapsule

L-Tryptophan 500 mg Life Extension

500 mg— DVCapsule

L-Tryptophan 500 mg The Vitamin Shoppe

500 mg— DVCapsule

HIBERN8 Nutrex Research

500 mg— DVCapsule

Best L-Tryptophan 500 mg Doctor's Best

500 mg— DVCapsule

Best L-Tryptophan Powder Doctor's Best

500 mg— DVPowder

Twilight Time Progressive Professional from Progressive Laboratories

500 mg— DVCapsule

Whey Protein Gold Isolate Plus Natural Vanilla Flavor California Academy of Health

471 mg— DVPowder

Whey Protein Gold Isolate Plus Natural Chocolate Flavor California Academy of Health

458 mg— DVPowder

Gorilla Mode EAAS Lemon Lime Gorilla Mind

450 mg— DVPowder

L-Tryptophan Earthborn Elements

450 mg— DVCapsule

Gorilla Mode EAAS Jungle Juice Gorilla Mind

450 mg— DVPowder

Whey Protein Isolate Chocolate BioSteel

413 mg— DVPowder

Whey Protein Isolate Vanilla BioSteel

413 mg— DVPowder

New Mood Onnit

400 mg— DVCapsule

Melt Blue Raspberry Bowmar Nutrition

400 mg— DVPowder

Advanced Recovery Formula Chocolate BioSteel

386 mg— DVPowder

Advanced Recovery Formula Vanilla Biosteel

385 mg— DVPowder

PRE Watermleon Bowmar Nutrition

375 mg— DVPowder

BCAA + EAA Steel

300 mg— DVPowder

Sleep Optimizer Jarrow Formulas

300 mg— DVCapsule

Sleep SR Kaged Muscle

275 mg— DVCapsule

GH Stack Grape Flavor Universal

250 mg— DVPowder

Qualia Nootropic Energy Triple Berry Flavor Qualia

250 mg— DVLiquid

Sleep youtheory

250 mg— DVPowder

Sleep Nighttime Powder youtheory

250 mg— DVPowder

OxyDrene NAD+ Enhancer Novex Biotech

220 mg— DVCapsule

Oxydrene NAD+ Enhancer Novex Biotech

220 mg— DVCapsule

Precision Amino Crisp Apple GNC Beyond Raw

200 mg— DVPowder

Sleep Answer Doctors' Preferred

200 mg— DVCapsule

Sleep-O-Max Maxi Health

200 mg— DVCapsule

Cognitive Aminos Pure Encapsulations

200 mg— DVCapsule

Precision Amino Peach Mango Tea GNC Beyond Raw

200 mg— DVPowder

Night Pack: New Mood Onnit

200 mg— DVCapsule

BCAA Kiwi Bluebery Huge Nutrition

200 mg— DVPowder

GI Guard PM Protocol For Life Balance

200 mg— DVCapsule

Precision Amino Gummy Worm GNC Beyond Raw

200 mg— DVPowder

Sleep Terra Origin

150 mg— DVCapsule

Nighttime Stress Relief BioSchwartz

150 mg— DVCapsule

Healthy Sleep & Wake Terra Origin

150 mg— DVCapsule

Amino-9 Essentials Powder NOW Sports

117 mg— DVPowder

SleepMode Evlution Nutrition

100 mg— DVCapsule

Garcinia Cambogia with Melatonin Angry Supplements

100 mg— DVTablet or Pill

Jocko Good Night Jocko Fuel

100 mg— DVCapsule

Qualia Life Qualia

100 mg— DVCapsule

Qualia Night Qualia

100 mg— DVCapsule

ZMAg P.M.GNC Beyond Raw

100 mg— DVOther (e.g. tea bag)

PEVArx Innovus Pharmaceuticals

100 mg— DVCapsule

Skinny Dreams with Melatonin & Valerian Root Angry Supplements

100 mg— DVTablet or Pill

5-HTP Complex Orzax

100 mg— DVCapsule

Zinc Magnesium Amino Complex GNC Pro Performance

100 mg— DVTablet or Pill

Amino-9 Essentials NOW Sports

88 mg— DVTablet or Pill

EAA Pure Blue Raspberry NutraBio

75 mg— DVPowder

Frequently Asked Questions

How many products contain L-Tryptophan?

There are 399 supplement products containing L-Tryptophan from 96 brands in the NIH DSLD database.

What is the average L-Tryptophan dosage?

The average L-Tryptophan dosage across supplement products is 305.88 mg. Dosages range from 0 to 2000 mg.

What is the most common form for L-Tryptophan supplements?

The most common product form for L-Tryptophan supplements is Capsule.

What brands make L-Tryptophan supplements?

There are 96 brands that make supplements containing L-Tryptophan in the NIH DSLD database.

Related Ingredients

L-Glutamine2,270 L-Tyrosine1,633 L-Leucine1,161 L-Arginine1,099 L-Lysine1,039 Glycine1,009 L-Methionine976 L-Valine890

Explore More

Commonly paired with L-Tryptophan →

High-dose L-Tryptophan options →

Low-dose L-Tryptophan options →

Compare L-Tryptophan with other amino acid ingredients →

Quick Facts

Products: 399
Brands: 96
Avg Dose: 305.88 mg
Common Form: Capsule
Category: amino acid

Related Ingredients

L-Glutamine2,270 L-Tyrosine1,633 L-Leucine1,161 L-Arginine1,099 L-Lysine1,039