| L-Tryptophan | Klaire Labs | 2000 mg | — | Capsule |
| L-Tryptophan 1500 mg● OTHER INGREDIENTS (1) | NusaPure | 1500 mg | — | Capsule |
| Serotonin Brain Food⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | NS Natural Stacks | 1250 mg | — | Capsule |
| L-Tryptophan 1,000 mg● OTHER INGREDIENTS (2) | AN Amazing Nutrition Amazing Formulas | 1000 mg | — | Tablet or Pill |
| ZZZ Cherry Bomb⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | 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● OTHER INGREDIENTS (2) | Protocol For Life Balance | 1000 mg | — | Tablet or Pill |
| L-Tryptophan 1000 mg | SuperSmart | 1000 mg | — | Tablet or Pill |
| ZZZ Pineapple Peach⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| L-Tryptophan Powder | Herbadiet | 1000 mg | — | Powder |
| Sleep | Kion | 1000 mg | — | Capsule |
| ZZZ Knockout Punch⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| Sleep Honey Lavender Flavored | Kion | 1000 mg | — | Powder |
| L-Tryptophan 1000 mg● OTHER INGREDIENTS (1) | AN Amazing Nutrition Amazing Formulas | 1000 mg | — | Tablet or Pill |
| L-Tryptophan 1000 mg● OTHER INGREDIENTS (2) | Best Naturals | 1000 mg | — | Tablet or Pill |
| ZZZ Razzzberry Lemonade⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | Core Nutritionals | 1000 mg | — | Powder |
| Superhuman Sleep Slaughtermelon Watermelon Lemonade● OTHER INGREDIENTS (2) | Alpha Lion | 1000 mg | — | Powder |
| L-Trytophan 1000 mg● OTHER INGREDIENTS (2) | The Vitamin Shoppe | 1000 mg | — | Tablet or Pill |
| Optimized Tryptophan Plus● OTHER INGREDIENTS (3) | Life Extension | 1000 mg | — | Capsule |
| ZZZ Blueberry Lemonade⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | 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● OTHER INGREDIENTS (1) | Twinlab | 560 mg | — | Powder |
| 100% Whey Protein Fuel Vanilla Slam● OTHER INGREDIENTS (1) | Twinlab | 560 mg | — | Powder |
| 100% Whey Protein Fuel Strawberry Smash● OTHER INGREDIENTS (1) | Twinlab | 560 mg | — | Powder |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | Best Naturals | 500 mg | — | Capsule |
| L-Tryptophan | BulkSupplements.com | 500 mg | — | Powder |
| Density● OTHER INGREDIENTS (3) | Beverly International | 500 mg | — | Tablet or Pill |
| L-Tryptophan 500 mg Capsules | BulkSupplements.com | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | Advanced Nutrition by Zahler | 500 mg | — | Capsule |
| L-Tryptophan | Hard Rhino | 500 mg | — | Powder |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | Nutricost | 500 mg | — | Capsule |
| L-Tryptophan (250 mg) | BulkSupplements.com | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | Swanson | 500 mg | — | Capsule |
| L-Tryptophan 500 mg | Doctor's Best | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | Bluebonnet | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | Bronson Laboratories | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | AN Amazing Nutrition Amazing Formulas | 500 mg | — | Capsule |
| 100% Pure L-Tryptophan 500 Milligrams | NutraBio | 500 mg | — | Capsule |
| I-Tryptophan● OTHER INGREDIENTS (1) | Isotonix | 500 mg | — | Powder |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | Natural Grocers by Vitamin Cottage | 500 mg | — | Capsule |
| 100% Pure L-Tryptophan | NutraBio | 500 mg | — | Powder |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | Jarrow Formulas | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (1) | longlifenutri | 500 mg | — | Capsule |
| L-Tryptophan | Metabolic Maintenance | 500 mg | — | Capsule |
| L-Tryptophan 500 mg | Life Extension | 500 mg | — | Capsule |
| L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | The Vitamin Shoppe | 500 mg | — | Capsule |
| HIBERN8● OTHER INGREDIENTS (5) | Nutrex Research | 500 mg | — | Capsule |
| Best L-Tryptophan 500 mg● OTHER INGREDIENTS (2) | Doctor's Best | 500 mg | — | Capsule |
| Best L-Tryptophan Powder | Doctor's Best | 500 mg | — | Powder |
| Twilight Time● OTHER INGREDIENTS (1) | 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● OTHER INGREDIENTS (1) | California Academy of Health | 458 mg | — | Powder |
| Gorilla Mode EAAS Lemon Lime● OTHER INGREDIENTS (1) | Gorilla Mind | 450 mg | — | Powder |
| L-Tryptophan | Earthborn Elements | 450 mg | — | Capsule |
| Gorilla Mode EAAS Jungle Juice● OTHER INGREDIENTS (1) | Gorilla Mind | 450 mg | — | Powder |
| Whey Protein Isolate Chocolate● OTHER INGREDIENTS (1) | BioSteel | 413 mg | — | Powder |
| Whey Protein Isolate Vanilla● OTHER INGREDIENTS (1) | BioSteel | 413 mg | — | Powder |
| New Mood● OTHER INGREDIENTS (1) | Onnit | 400 mg | — | Capsule |
| Melt Blue Raspberry● OTHER INGREDIENTS (2) | Bowmar Nutrition | 400 mg | — | Powder |
| Advanced Recovery Formula Chocolate● OTHER INGREDIENTS (1) | BioSteel | 386 mg | — | Powder |
| Advanced Recovery Formula Vanilla● OTHER INGREDIENTS (1) | Biosteel | 385 mg | — | Powder |
| PRE Watermleon● OTHER INGREDIENTS (1) | Bowmar Nutrition | 375 mg | — | Powder |
| BCAA + EAA● OTHER INGREDIENTS (2) | Steel | 300 mg | — | Powder |
| Sleep Optimizer● OTHER INGREDIENTS (3) | Jarrow Formulas | 300 mg | — | Capsule |
| Sleep SR● OTHER INGREDIENTS (1) | Kaged Muscle | 275 mg | — | Capsule |
| GH Stack Grape Flavor● OTHER INGREDIENTS (2) | Universal | 250 mg | — | Powder |
| Qualia Nootropic Energy Triple Berry Flavor● OTHER INGREDIENTS (1) | Qualia | 250 mg | — | Liquid |
| Sleep● OTHER INGREDIENTS (1) | youtheory | 250 mg | — | Powder |
| Sleep Nighttime Powder● OTHER INGREDIENTS (1) | youtheory | 250 mg | — | Powder |
| OxyDrene NAD+ Enhancer⚠ EXCEEDS UL● OTHER INGREDIENTS (4) | Novex Biotech | 220 mg | — | Capsule |
| Oxydrene NAD+ Enhancer⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Novex Biotech | 220 mg | — | Capsule |
| Precision Amino Crisp Apple | GNC Beyond Raw | 200 mg | — | Powder |
| Sleep Answer● OTHER INGREDIENTS (2) | Doctors' Preferred | 200 mg | — | Capsule |
| Sleep-O-Max● OTHER INGREDIENTS (2) | Maxi Health | 200 mg | — | Capsule |
| Cognitive Aminos | Pure Encapsulations | 200 mg | — | Capsule |
| Precision Amino Peach Mango Tea● OTHER INGREDIENTS (1) | GNC Beyond Raw | 200 mg | — | Powder |
| Night Pack: New Mood● OTHER INGREDIENTS (1) | Onnit | 200 mg | — | Capsule |
| BCAA Kiwi Bluebery● OTHER INGREDIENTS (1) | Huge Nutrition | 200 mg | — | Powder |
| GI Guard PM● OTHER INGREDIENTS (2) | Protocol For Life Balance | 200 mg | — | Capsule |
| Precision Amino Gummy Worm● OTHER INGREDIENTS (2) | GNC Beyond Raw | 200 mg | — | Powder |
| Sleep● OTHER INGREDIENTS (1) | 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● OTHER INGREDIENTS (2) | Evlution Nutrition | 100 mg | — | Capsule |
| Garcinia Cambogia with Melatonin● OTHER INGREDIENTS (3) | Angry Supplements | 100 mg | — | Tablet or Pill |
| Jocko Good Night● OTHER INGREDIENTS (1) | Jocko Fuel | 100 mg | — | Capsule |
| Qualia Life⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | Qualia | 100 mg | — | Capsule |
| Qualia Night | Qualia | 100 mg | — | Capsule |
| ZMAg P.M.● OTHER INGREDIENTS (3) | GNC Beyond Raw | 100 mg | — | Other (e.g. tea bag) |
| PEVArx● OTHER INGREDIENTS (1) | Innovus Pharmaceuticals | 100 mg | — | Capsule |
| Skinny Dreams with Melatonin & Valerian Root● OTHER INGREDIENTS (3) | Angry Supplements | 100 mg | — | Tablet or Pill |
| 5-HTP Complex● OTHER INGREDIENTS (2) | Orzax | 100 mg | — | Capsule |
| Zinc Magnesium Amino Complex● OTHER INGREDIENTS (3) | GNC Pro Performance | 100 mg | — | Tablet or Pill |
| Amino-9 Essentials● OTHER INGREDIENTS (1) | NOW Sports | 88 mg | — | Tablet or Pill |
| EAA Pure Blue Raspberry | NutraBio | 75 mg | — | Powder |