Collagen Peptides and medications.
Collagen Peptides is in the Distil supplement database, evidence Grade B. The page below lists every medication we have explicitly assessed it against.
Collagen peptides are hydrolysed protein fragments rich in glycine and proline, the building blocks of connective tissue. The Grade B evidence supports joint pain reduction and skin elasticity, with weaker Grade C support for muscle. Type matters: Type I/III hydrolysed peptides, bovine or marine, target skin and tendons, while undenatured Type II at just 40mg suits osteoarthritis, comparable in trials to a much larger dose of glucosamine and chondroitin. Marine collagen tends to absorb better for skin goals. Doses are 10 to 15g of hydrolysed peptides or 40mg of UC-II. Vitamin C is a required cofactor for collagen synthesis, so the two belong together, ideally taken around 30 to 60 minutes before joint-loading exercise per Shaw 2017. One practical note: collagen is roughly a third glycine, so 10 to 15g delivers several grams of glycine, which is safe but additive, so keep any standalone glycine at the lower end. Vegan "collagen" supplies precursors only and is not equivalent.
We have not yet completed an explicit assessment of medications for Collagen Peptides in the Distil interactions database. We surface this distinction deliberately: the Distil checker tells you when we have explicitly assessed a pair and when we have not, because both are useful information. If you take Collagen Peptides alongside a medication, the checker below will surface anything already in our database, and the missing-item form at the bottom of the page routes uncatalogued pairs into our next curation pass.
What this list does not say. Pairs not flagged here are not implicitly safe. They are either not yet in our database, or fall outside our inclusion scope. Use the checker below to surface any medication, and submit a missing item if you take something we have not catalogued.
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How we grade severity, choose what's in scope, and what we exclude.
Every call on this page is reasoned. We publish the full rubric for severity tiers, the medication inclusion logic, the evidence grades we accept, and what we deliberately leave out. About three thousand words. Worth reading once if you use this tool more than occasionally.
Read the full methodologyA full supplement review, built around you, not a generic stack.
The free checker answers one interaction question at a time. A Distil report reviews the bigger picture: your goals, diet, medications, current supplements and any blood results you provide, then shows what appears worth keeping, changing, adding or leaving out.
- what your diet already covers, so you are not adding a capsule for something food is already handling
- which evidence-graded compounds are worth considering for your goals, and which were considered but left out
- what to keep, change or stop from what you already take, plus the order to introduce anything new
- how your medications and complete supplement stack fit together, with daily timing and a clear point for reassessment
The interaction check is one section of the full report. You also get the reasoning behind each recommendation and the evidence references used.
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If a supplement or medication you take isn't in our autocomplete, tell us. We go through what people flag every week and add what's missing.