| L-Proline 3000 mg | SuperSmart | 3000 mg | — | Capsule |
| Liquid Aminos Wild Cherry Flavor | Precision Engineered | 2130 mg | — | Liquid |
| L-Proline | BulkSupplements.com | 2000 mg | — | Powder |
| L-Proline 2000 mg Capsules | BulkSupplements.com | 2000 mg | — | Capsule |
| Ortho C+ Lemon Flavor | AOR Advanced Orthomolecular Research Premium | 2000 mg | — | Powder |
| L-Proline 2,000 mg | Nutricost | 2000 mg | — | Powder |
| 100% Pure L-Proline 2000 Milligrams | NutraBio | 2000 mg | — | Capsule |
| L-Proline | AN Amazing Nutrition Amazing Formulas | 2000 mg | — | Powder |
| Whey Protein Gold Isolate Plus Natural Vanilla Flavor | California Academy of Health | 1671 mg | — | Powder |
| Advanced Recovery Formula Vanilla | Biosteel | 1651 mg | — | Powder |
| Advanced Recovery Formula Chocolate | BioSteel | 1651 mg | — | Powder |
| 100% Whey Protein Fuel Chocolate Surge | Twinlab | 1600 mg | — | Powder |
| 100% Whey Protein Fuel Vanilla Slam | Twinlab | 1600 mg | — | Powder |
| 100% Whey Protein Fuel Strawberry Smash | Twinlab | 1600 mg | — | Powder |
| Cardio Pro | Progressive Professional from Progressive Laboratories | 1500 mg | — | Powder |
| Whey Protein Isolate Chocolate | BioSteel | 1452 mg | — | Powder |
| Whey Protein Isolate Vanilla | BioSteel | 1452 mg | — | Powder |
| Whey Protein Gold Isolate Plus Natural Chocolate Flavor | California Academy of Health | 1353 mg | — | Powder |
| Nitro Benefits | DaVinci Benefits Line | 1000 mg | — | Powder |
| L-Proline 500 mg | Best Naturals | 1000 mg | — | Capsule |
| L-Proline | Herbadiet | 1000 mg | — | Capsule |
| L-Proline Powder | Herbadiet | 1000 mg | — | Powder |
| L-Proline 550 mg | BulkSupplements.com | 550 mg | — | Capsule |
| 24/7 Beauty Collagen Protein Raspberry Flavored | IVL | 550 mg | — | Powder |
| InflammaCORE Chocolate Mint | Ortho Molecular Products | 500 mg | — | Powder |
| Gut Feeling Max | HoltraCeuticals | 500 mg | — | Powder |
| Pure L-Proline USP Pharma Grade Powder | Hard Rhino | 500 mg | — | Powder |
| InflammaCORE Orange Splash | Ortho Molecular Products | 500 mg | — | Powder |
| InflammaCORE Banana Creme | Ortho Molecular Products | 500 mg | — | Powder |
| L-Proline 500 mg | AN Amazing Nutrition Amazing Formulas | 500 mg | — | Capsule |
| Pro-Rite | Carlson | 500 mg | — | Capsule |
| InflammaCORE Strawberry | Ortho Molecular Products | 500 mg | — | Powder |
| L-Proline 500 mg | Douglas Laboratories | 500 mg | — | Capsule |
| InflammaCORE Vanilla Chai | Ortho Molecular Products | 500 mg | — | Powder |
| Gut 4-tify | Just Thrive | 500 mg | — | Capsule |
| InflammaCORE Natural Cherry | Ortho Molecular Products | 500 mg | — | Powder |
| L-Proline | Earthborn Elements | 410 mg | — | Capsule |
| Heart Science | Source Naturals | 400 mg | — | Tablet or Pill |
| Skin Eternal Plus | Source Naturals SE Skin Eternal | 400 mg | — | Tablet or Pill |
| FLEX | AdvoCare | 400 mg | — | Capsule |
| Amino Fuel 1000 | Twinlab | 289 mg | — | Tablet or Pill |
| LigaZyme | Allergy Research Group | 250 mg | — | Tablet or Pill |
| Ligament Restore | Pure Encapsulations | 250 mg | — | Capsule |
| H-S-N Complex | Designs for Health | 250 mg | — | Capsule |
| Glycine + Taurine & L-Proline Unflavored | Pure Power | 250 mg | — | Powder |
| Liga-Tend | Country Life | 250 mg | — | Tablet or Pill |
| Joint, Tendon, Ligament I | Douglas Laboratories | 250 mg | — | Capsule |
| Amino 1000 | Precision Engineered | 249 mg | — | Other (e.g. tea bag) |
| Amino Acids | Enriching Gifts | 213 mg | — | Capsule |
| Free-Form Aminos | DC | 205.5 mg | — | Tablet or Pill |
| Collagen Factors | Ortho Molecular Products | 200 mg | — | Capsule |
| Matrixx | Allergy Research Group | 200 mg | — | Capsule |
| Collagen Forte | Douglas Laboratories | 200 mg | — | Capsule |
| Lustre | Source Naturals | 200 mg | — | Tablet or Pill |
| Heartbeat Elite | Carlson | 150 mg | — | Tablet or Pill |
| Cardio Complete | Carlson | 150 mg | — | Tablet or Pill |
| Collagenics | Metagenics | 150 mg | — | Tablet or Pill |
| Amino-NR | Pure Encapsulations | 135 mg | — | Capsule |
| Amino Gram Forte | Douglas Laboratories | 110 mg | — | Tablet or Pill |
| Hyaluronic Acid 100 mg With Co-Factors | Protocol For Life Balance | 100 mg | — | Capsule |
| Complete Plant Collagen Builder Natural - No Stevia | PlantFusion | 100 mg | — | Powder |
| Vegan Collagen Builder + | Amen | 100 mg | — | Capsule |
| Hyaluronic Acid 100 mg | LuckyVitamin | 100 mg | — | Capsule |
| Complete Plant Collagen Builder Creamy Vanilla Bean | PlantFusion | 100 mg | — | Powder |
| Wrinkle Remove with Resveratrol | Totally Products | 100 mg | — | Capsule |
| Beauty Blossom Complex | Solumeve | 100 mg | — | Capsule |
| Arthrit-Eze | Xtendlife | 100 mg | — | Tablet or Pill |
| Ultimate Hair & Nail Formula | Bluebonnet | 100 mg | — | Capsule |
| Advanced Glucosamine Complex | Solgar | 100 mg | — | Tablet or Pill |
| Hair, Skin & Nails | LuckyVitamin | 100 mg | — | Capsule |
| Double Strength Hyaluronic Acid 100 mg | NOW | 100 mg | — | Capsule |
| Clinically Advanced Hair, Skin & Nails | NOW Solutions | 100 mg | — | Capsule |
| Liquid Hyaluronic Acid 100 mg Berry Flavor | NOW | 100 mg | — | Liquid |
| Hyaluronic Acid Complex | California Gold Nutrition | 100 mg | — | Capsule |
| Collagen Builder Rich Chocolate | PlantFusion | 100 mg | — | Powder |
| Skin Support Pack | Douglas Laboratories | 80 mg | — | Other (e.g. tea bag) |
| Max-Amino Caps with Vitamin B6 | Country Life | 80 mg | — | Capsule |
| Amino Blend | Progressive Professional from Progressive Laboratories | 77 mg | — | Capsule |
| Amino Support Powder | Kirkman | 70 mg | — | Powder |
| Total Balance Men's Premium | Xtendlife | 50 mg | — | Tablet or Pill |
| Total Balance Women's Premium | Xtendlife | 50 mg | — | Tablet or Pill |
| Cardio-Klenz | Xtendlife | 50 mg | — | Tablet or Pill |
| Joints Ultra | Viva Vitamins | 50 mg | — | Tablet or Pill |
| Cardio-Support | Xtendlife | 50 mg | — | Tablet or Pill |
| Joint Support | Meijer Naturals | 50 mg | — | Tablet or Pill |
| Total Balance Unisex Premium | Xtendlife | 50 mg | — | Tablet or Pill |
| Joint Support | 1 Body | 50 mg | — | Tablet or Pill |
| Skin, Nails & Hair | Solgar | 50 mg | — | Tablet or Pill |
| Glucosamine Complex | Genestra Brands | 50 mg | — | Capsule |
| RevitaGlow | HoltraCeuticals | 50 mg | — | Capsule |
| Nails | Viva Vitamins | 50 mg | — | Tablet or Pill |
| Free Amino Acids | Nature's Sunshine | 45 mg | — | Tablet or Pill |
| Steady On | Allergy Research Group | 45 mg | — | Powder |
| Take Heart II Without Hormones | Allergy Research Group | 38 mg | — | Powder |
| Amino Complex | Dr. Rico Perez | 27 mg | — | Capsule |
| CDC Forte | Genestra Brands | 25 mg | — | Tablet or Pill |
| PodiVite | Zen Nutrients | 25 mg | — | Capsule |
| Optimal Amino Blend | Seeking Health | 21 mg | — | Capsule |
| Advanced Collagen Formula | GNC Women's | 16 mg | — | Capsule |
| Total Balance Children's | Xtendlife | 15 mg | — | Tablet or Pill |