| California Gold Nutrition CollagenUP, Hydrolyzed Marine Collagen Peptides with Hyaluronic Acid, Unflavored, 7.26 oz (206 g) | California Gold Nutrition | Powder | 1 scoop (5 g) | About 41 | 20 | 4 g (<1% DV) | 90 mg (100% DV) | 20 mg (1% DV) | 5 g | 60 mg | None listed | Label suggests mixing 1 scoop daily in 6-8 oz of room temperature water or juice. | Contains fish (one or more of barramundi, catfish, cod, haddock, ling, pangasius, red snapper, salmon, tilapia, trout); not manufactured with milk, eggs, crustacean shellfish, tree nuts, peanuts, wheat, soy, sesame or gluten (label statement) | Label says 5 g per scoop is an average and that the product is packaged and sold by weight, so contents settle. Contains a food-grade moisture absorber; do not eat. Keep out of reach of children. | CGN-01033 | Aug 2015 | 330,852 reviews | — | — | — | — | — | — | — | — | — | — | — | — | US$19.21 on iHerb US (checked 2026-11-04); iHerb shows $0.47/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Vital Proteins Collagen Peptides, Unflavored, 20 oz (567 g) | Vital Proteins | Powder | 4 Tbsp (20 g) | About 28 | 70 | 18 g | — | 110 mg (5% DV) | — | — | None listed | Label suggests a total of 4 level tbsp, either all at once or throughout the day, mixed with food or a beverage. | Manufactured in a facility that processes milk, fish and tree nuts (label statement) | Label says to use as a food supplement only. Label also says collagen is not a complete protein. Sold by weight, so contents settle. Do not use if the safety seal is broken. | VTP-00508 | Nov 2016 | 39,041 reviews | 0 g | 20 g | — | — | — | — | — | — | — | — | — | — | US$39.95 on iHerb US (checked 2026-11-04), shown as 15% off a $47.00 list price; iHerb shows $1.43/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| NeoCell Grassfed Collagen Peptides + Vitamin C & Biotin, 270 Tablets | NeoCell | Tablet | 6 tablets | 45 | 20 | 5 g | 60 mg (67% DV) | 30 mg (1% DV) | — | — | Vegetable magnesium stearate; may contain trace amounts of naturally occurring sulfite residue | Label suggests 6 tablets daily. | May contain trace amounts of naturally occurring sulfite residue (label statement) | Label says to use as a food supplement only. For adults only. Consult your doctor before use if you are pregnant, nursing, taking medications or have a medical condition. Do not use if the safety seal is broken or missing. | NEL-13262 | Jul 2022 | 67,405 reviews | — | — | 5,000 mcg (16,667% DV) | 6 g | — | — | — | — | — | — | — | — | US$20.92 on iHerb US (checked 2026-11-04); iHerb shows $0.46/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| California Gold Nutrition Hydrolyzed Collagen Peptides, Type I & III, Unflavored, 1.01 lb (460 g) | California Gold Nutrition | Powder | 2 scoops (10 g) | 46 | 35 | 9 g | — | 60 mg (2% DV) | — | — | None | Label suggests mixing 2 scoops daily with 6-12 oz of water or a beverage. | Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy, sesame or gluten (label statement) | Label says to use as a food supplement only. Label says 10 g per 2 scoops is an average and that the product is sold by weight. Keep out of reach of children; do not use if the seal is missing or broken. | LKN-01858 | Nov 2020 | 18,149 reviews | — | — | — | — | 10 g | — | — | — | — | — | — | — | US$22.13 on iHerb US (checked 2026-11-04); iHerb shows $0.48/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Youtheory Collagen, 290 Tablets | Youtheory | Tablet | 6 tablets | 48 | — | — | 90 mg (100% DV) | — | — | — | Magnesium stearate (vegetable source) | Label suggests adults take 6 tablets per day, all at once or in divided amounts. | Manufactured in a facility that processes fish extracts (label statement) | Label says to check with your doctor before use if you are taking medication or have any medical condition, and not to use if you are pregnant or nursing. Not intended for people under 18. Do not exceed the labeled amount. | YOU-00303 | Aug 2014 | 47,775 reviews | — | — | — | — | — | 6,000 mg | Glycine 1,236 mg; Glutamic acid 744 mg; Hydroxyproline 702 mg; Proline 690 mg | — | — | — | — | — | US$19.99 on iHerb US (checked 2026-11-04); iHerb shows $0.42/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Codeage Multi Collagen Peptides Powder, Unflavored, 20 oz (567 g) | Codeage | Powder | 1 scoop (about 9 g) | 63 | 43 | 9 g | — | 50 mg (2% DV) | — | — | No other ingredients listed beyond the complex | Label suggests adults mix 1 scoop daily with 8-12 oz of water or a beverage. Do not exceed the labeled amount. | Contains fish (cod, snapper) and egg | Label says to use as a food supplement only. Label says collagen is not a significant source of protein. Consult a doctor before use if you are pregnant, nursing, allergic, have a medical condition or take medications. Do not use if the product has been opened or tampered with. | AGE-00802 | Feb 2021 | 6,861 reviews | — | — | — | — | — | — | — | 9,000 mg (grass-fed hydrolyzed bovine collagen peptides, organic chicken bone broth, organic beef bone broth, wild-caught hydrolyzed fish collagen peptides (cod, snapper), egg shell membrane collagen) | — | — | — | — | US$39.99 on iHerb US (checked 2026-11-04); iHerb shows $0.63/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Sports Research Collagen Peptides, Unflavored, 16 oz (454 g) | Sports Research | Powder | 1 scoop (11 g) | About 41 | 40 | 10 g (<1% DV) | — | 55 mg (2% DV) | — | — | Hydrolyzed bovine collagen peptides | Label suggests adults mix 1 scoop into a beverage or meal 1-2 times daily. | — | Label says to use as a food supplement only. Label says 11 g per scoop is an average and that contents settle. Consult a qualified healthcare professional before use if you are pregnant, nursing, have a diagnosed medical condition or take a prescription medication. Do not use if the safety seal is damaged or missing. | SRE-01018 | Oct 2016 | 37,939 reviews | — | — | — | — | — | — | — | — | 11 g | — | — | — | US$32.95 on iHerb US (checked 2026-11-04); iHerb shows $0.80/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| California Gold Nutrition Hydrolyzed Collagen Peptides, Type I & III, 250 Tablets | California Gold Nutrition | Tablet | 3 tablets | About 83 | 15 | 3 g (<1% DV) | 30 mg (33% DV) | 10 mg (<1% DV) | — | — | Stearic acid, silicon dioxide (silica), magnesium stearate | Label suggests 3 tablets twice daily (6 tablets in total). | Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy, sesame or gluten (label statement) | Label says to use as a food supplement only. Label says tablets are not coated, so chipping may occur. Keep out of reach of children; do not use if the seal is missing or broken. | CGN-01178 | Jan 2018 | 33,161 reviews | — | — | — | — | 3 g | — | — | — | — | — | — | — | US$24.32 on iHerb US (checked 2026-11-04); iHerb shows $0.29/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Vital Proteins Marine Collagen, Unflavored, 7.8 oz (221 g) | Vital Proteins | Powder | 3 Tbsp (12 g) | About 18 | 45 | 11 g | — | — | — | — | Cod | Label suggests a total of 3 level tbsp, either all at once or throughout the day, mixed with food or a beverage. | Manufactured in a facility that processes milk, fish and tree nuts (label statement); the product is made from cod | Label says to use as a food supplement only. Consult your healthcare practitioner before use if pregnant, lactating, on medication or with any health condition. Sold by weight, so contents settle. Do not use if the safety seal is broken. | VTP-00548 | May 2018 | 13,719 reviews | 0 g | — | — | — | — | — | — | — | — | 12 g | — | — | US$39.00 on iHerb US (checked 2026-11-04); iHerb shows $2.17/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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| Doctor's Best Pure Collagen Types 1 and 3 Powder, 7.1 oz (200 g) | Doctor's Best | Powder | 1 scoop (about 6.6 g) | About 30 | 25 | — | — | — | — | — | None | Label suggests dissolving 1 scoop in a small amount of water or juice, then adding 6-8 oz of liquid and mixing well. | — | Label says the product is sold by weight, so the powder settles and the container may look less full. Natural color variation may occur. | DRB-00203 | Sep 2009 | 21,386 reviews | — | — | — | — | — | — | — | — | — | — | 6 g | 6.6 g (6,600 mg) | US$12.99 on iHerb US (checked 2026-11-04); iHerb shows $0.43/serving. Prices and promotions differ by country, so check the iHerb checkout page for your price. |
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