Six tablets a day supplying 6,000 mg (6 g) of hydrolyzed collagen and 90 mg vitamin C; 290 tablets, 48 servings; Youtheory.
Collagen from bovine hide and/or pork sources, per the brand; the current label prints no collagen "types." Vitamin C at 100% of the Daily Value as calcium ascorbate; one other ingredient.
Adults who want to try a mid-range collagen amount (most trials used 2.5 to 10 g a day for 8 to 12 weeks) and prefer tablets to powder, knowing the outcomes studied were skin hydration, elasticity and joint comfort.
Animal-derived (not vegetarian; beef and/or pork, unspecified per bottle), made in a facility that processes fish; six large tablets a day; the vitamin C stacks with a multivitamin.
What the label shows
We read the Supplement Facts panel from the label photographs on the Amazon listing and from Youtheory's product page on September 30, 2026. The panel is short; the interesting details are in what it does not print.
| Ingredient | Amount per serving | What to know |
|---|---|---|
| Hydrolyzed collagen | 6,000 mg — no Daily Value established | Six grams a day sits inside the 2.5 to 10 g range used in most of the skin trials pooled by two meta-analyses [2] [3], and well under the 15 g a day used in the exercise studies that measured collagen synthesis [4]. |
| Vitamin C (as calcium ascorbate) | 90 mg — 100% DV | Exactly the adult Daily Value. The NIH recommended intake is 90 mg a day for men and 75 mg for women, the upper limit 2,000 mg, and vitamin C is required for the body's own collagen production [1]. |
| Other ingredients | — | Magnesium stearate (vegetable source). Nothing else is listed, which fits the "no binders or fillers" icon on the listing images. |
Serving size is six tablets, 48 servings per bottle, with the direction "Take six (6) tablets per day, all at once or in divided doses"; Youtheory's page adds that it prefers an empty stomach, 30 minutes before or two hours after a meal [6]. The Supplement Facts image on the listing states that the product "is manufactured in a facility that processes fish extracts," and the icons beside it call it dairy-free, soy-free and gluten-free. The label does not say which animal the collagen comes from; Youtheory's page does: "bovine (cow) hide and/or porcine," which it describes as naturally rich in collagen types 1 and 3 [6]. "And/or" means a given bottle may be beef, pork or both, and the label will not tell you which. That matters for anyone avoiding pork or beef for dietary or religious reasons. Note, too, that the current label prints no collagen "types" at all; the "Types 1, 2 & 3" wording seen on older packaging of this line is gone, and the bottle now simply reads "collagen, skin, hair & nail formula, 6,000 mg, enhanced with vitamin C." The warning on the listing images says to check with your doctor if you use medication or have a medical condition, and not to use it if pregnant or nursing; Youtheory's page adds that it is not intended for anyone under 18 [6].
No third-party seal from a named program is printed. The listing's "Third Party Certified" and purity-testing icons, and its "third-party tested" bullet (which goes on to describe in-house manufacturing in the company's own GMP facility), name no laboratory or certifier, so they cannot be checked in any public directory and we do not credit them. Youtheory's Amazon listing image also notes a "larger tablet size," which readers who struggle with big tablets should weigh against the six-a-day direction.
What the evidence shows
Hydrolyzed collagen is collagen protein broken into short peptides so that it dissolves and is absorbed like other protein. The trials behind the category are mostly about skin, and they are consistent in direction while modest in size. A 2021 meta-analysis of 19 randomized, double-blind trials with 1,125 participants aged 20 to 70, 95% of them women, found that about 90 days of hydrolyzed collagen improved instrument-measured skin hydration and elasticity compared with placebo [2]. A 2023 meta-analysis of 26 randomized trials with 1,721 participants reached the same conclusion for hydration and elasticity, and its trial table is useful for reading this label: most trials gave about 2.5 g to 10 g a day for 8 to 12 weeks, and more than half used fish collagen while very few used beef or pork collagen, so the pooled result is not specific to the source in this product; the authors also flagged several biases in the included trials and asked for larger ones [3]. Read carefully, the outcome is "measurably better skin hydration and elasticity after two to three months in trials," and nothing more.
Joint outcomes rest on thinner ground. A 2021 systematic review of 15 randomized trials, twelve of them in recreational athletes, found collagen peptides combined with exercise most useful for joint comfort and function, with 15 g a day raising markers of collagen synthesis; the authors asked for larger trials with more precise outcome measures [4]. A 2018 meta-analysis in the British Journal of Sports Medicine of 69 trials of oral supplements in people with painful, worn knee, hip or hand joints placed collagen hydrolysate among seven supplements with large short-term effects on pain, but rated the overall quality of the evidence very low, and found no supplement with a clinically important effect on pain in the long term [5]. For the seller's hair, nail, bone and muscle statements we found no pooled trial evidence in our search, so they stand as the seller's claims: "supports healthy hair, strong nails, joints, bones, and muscles" and "hydrolyzed for absorption," each carrying the standard FDA disclaimer [6]. The vitamin C line is reasonable in principle, since the body needs vitamin C to make collagen [1], but we found no trial testing whether adding 90 mg to a collagen supplement changes any outcome, and most people eating fruit and vegetables already reach the Daily Value.
This is an animal product of unspecified origin per bottle (beef hide and/or pork) made in a facility that also handles fish. That is three allergen and dietary lines to read before the first tablet, and the reason vegetarians and anyone with a fish allergy should look elsewhere. Six tablets a day is also a genuine commitment; the trials ran eight to twelve weeks before measuring anything.
Who it may suit, and who should look elsewhere
The trials define the honest use case narrowly. Situations, not diagnoses:
- May suit: adults past 40 curious whether skin hydration and elasticity, or joint comfort during activity, change for them over a measured eight-to-twelve-week trial at a mid-range amount, who prefer counting tablets to mixing powder.
- May suit: people who want a short ingredient list, no added flavors or sweeteners, and vitamin C already included at the Daily Value.
- Look elsewhere: vegetarians and vegans, and anyone who avoids pork or beef, since the source is "bovine and/or porcine" and not declared per bottle.
- Look elsewhere: anyone with a fish allergy who would rather not rely on a shared-facility statement.
- Ask a clinician first: anyone told to limit protein intake, and anyone on medication, as the label itself directs; pregnant and nursing women are excluded by the label.
- Check the overlap: a multivitamin with vitamin C plus this product plus a vitamin C tablet can add up; the total is still far below the 2,000 mg upper limit for most people, but there is no reason to pay for the same nutrient three times.
- Adjust expectations: the measured changes are instrument readings and self-reported comfort over months, mostly in women for skin and in recreational athletes for joints.
Price, size and where it is sold
On September 30, 2026 the Amazon listing for ASIN B006VAZYNG showed "Youtheory Advanced Collagen, 6,000 mg, 290 Tablets, 48-Day Supply" at $19.99, in stock, shipped from Amazon and sold by a third-party merchant, Pattern Products. At six tablets a day that is 48 servings, about 42 cents a day. The listing was marked "non-returnable due to food safety reasons," although Amazon's general policy allows most items back within 30 days of delivery [7]; check the return line before ordering. Youtheory sells the same formula in 120-, 160- and 290-tablet bottles [6].
Sources
- National Institutes of Health, Office of Dietary Supplements. Vitamin C fact sheet for health professionals: recommended intakes, Daily Value, upper limit, role in collagen synthesis. Updated July 31, 2025. link
- International Journal of Dermatology, 2021. Systematic review and meta-analysis of 19 randomized trials of hydrolyzed collagen on skin hydration and elasticity. PubMed record. link
- Nutrients, 2023. Systematic review and meta-analysis of 26 randomized trials of oral hydrolyzed collagen on skin hydration and elasticity, with a table of doses, durations and collagen sources. PubMed record. link
- Amino Acids, 2021. Systematic review of 15 randomized trials of collagen peptides with exercise: joint comfort, body composition, recovery and collagen synthesis. PubMed record. link
- British Journal of Sports Medicine, 2018. Systematic review and meta-analysis of 69 trials of oral supplements, including collagen hydrolysate, for pain and function in worn knee, hip and hand joints. PubMed record. link
- Youtheory. Advanced Collagen product page: Supplement Facts, directions, collagen source and seller claims. link
- Amazon.com. "About Our Returns Policies" help page, opened September 30, 2026 (general 30-day return window; non-returnable categories). Not linked: this site links to Amazon only through product listings.
This report is educational and is not medical advice. Ask a qualified clinician before starting any supplement, especially if you are pregnant, nursing, or take medication.