Collagen Type II Ingredients & Drug Interactions
by Klaire Labs
What is this page for?
First and foremost: checking Collagen Type II against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Collagen Type II is a dietary supplement by Klaire Labs with 3 active ingredients. Its ingredients are commonly taken for osteoarthritis joint pain, joint stiffness, cartilage support.Based on those ingredients, 2 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Chondroitin Sulfate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Collagen Type II by Klaire Labs
Ask about any prescription or over-the-counter medication and we check it for interactions with Collagen Type II by Klaire Labs — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Collagen Type II by Klaire Labs
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains 3 active ingredients. Chondroitin sulfate and hydrolyzed collagen type II are joint-support compounds that come from cartilage and connective tissue.
Hyaluronic acid is a naturally occurring substance found in joints and skin that helps maintain moisture and cushioning. The product also contains inactive ingredients (hydroxypropyl methylcellulose and water) used as a capsule binder and filler.
Does it work?
Moderate evidence
Chondroitin sulfate is rated possibly effective for cataracts and osteoarthritis, but evidence for aging skin, osteoporosis, high cholesterol, and colorectal adenoma is insufficient to rate. Hyaluronic acid is rated possibly effective for dry eye and venous leg ulcers, though evidence for aging skin, hay fever, and sexual dysfunction is insufficient.
We hold no effectiveness data for hydrolyzed collagen type II or BioCell Collagen.
How safe is it?
Well-documented data
Chondroitin sulfate is generally well tolerated for short-term use, though quality varies and benefits are uncertain. The most common oral side effects are abdominal pain, bloating, constipation, diarrhea, heartburn, and nausea.
Rare serious effects include liver damage. Skin symptoms (eyelid swelling, limb swelling, hair loss, rash) and asthma flare-ups have been reported, especially when combined with glucosamine.
There is not enough safety information to use chondroitin during pregnancy or while breastfeeding—the safety data advises against it. Hyaluronic acid is generally well tolerated, but long-term safety of oral supplements is not fully studied, and there is not enough safety data to recommend oral supplements unless your doctor advises otherwise—this applies during pregnancy and breastfeeding as well.
No pregnancy or breastfeeding data is on file for hydrolyzed collagen type II or BioCell Collagen.
Meds to double-check
Moderate interaction found
If you take warfarin (Coumadin) or any other blood thinner, double-check this product with your pharmacist before starting—chondroitin sulfate may increase thinning effects. No other medication interactions are documented for the ingredients we could check.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This product may help with joint comfort and skin hydration if you fit the conditions where evidence exists, but talk to your pharmacist or doctor first—especially if you take blood thinners like warfarin. The ingredients are generally well tolerated, but short-term use is what's been studied.
If you're pregnant, breastfeeding, or taking any medications, check with us before you start.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 2023.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Collagen Type II, straight from the product label.
| Brand | Klaire Labs |
|---|---|
| Barcode (UPC) | 817234011203 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jan 23, 2023 |
| DSLD ID | 281393 |
| Product type | Amino Acid/protein |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Collagen Type II by Klaire Labs, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Chondroitin Sulfate | 200 mg | -- |
| Hyaluronic Acid | 100 mg | -- |
| Hydrolyzed Collagen Type II | 600 mg | -- |
| BioCell Collagen | 1000 mg | -- |
Other ingredients: Hydroxypropyl Methylcellulose, Water
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation
Free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, corn, and yeast. Contains no artificial colors, flavors, or preservatives.
Produced under a strict quality management system in compliance with Good Manufacturing Practices (GMPs) and third-party quality certifications.
Suggested/Recommended/Usage/Directions
Suggested Use: 2 capsules, 2 to 3 times daily or as directed by a healthcare professional.
Brand IP Statement(s)
BioCell Collagen BioCell Collagen is a registered trademark of BioCell Technology, LLC. NewPort Beach, California USA (Protected by US and International Patents).
Precautions
Do not use if shrinkwrap is broken or missing.
Caution: If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your healthcare professional before using this product.
Keep out of reach of children.
Storage
Store in a cool, dry place (59 F - 85 F) away from direct light.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Collagen Type II by Klaire Labs label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Collagen Type II by Klaire Labs
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
BioCell Collagen
Other (inactive) ingredients: Hydroxypropyl Methylcellulose, Water. These complete the product’s ingredient list but are not active constituents.
Collagen Type II by Klaire Labs Drug Interactions
HelloPharmacist Interaction Report
Klaire Labs Collagen Type II contains chondroitin sulfate, which carries a documented moderate interaction with warfarin (a blood thinner).
When chondroitin is combined with glucosamine, it may increase warfarin's blood-thinning effects and raise your INR (a measure of how thin your blood is). The effect of chondroitin alone is less clear, but the combination risk is well documented.
Read the full breakdown — every affected drug type, severity by severity
Hyaluronic acid, another ingredient here, has no interactions documented in our data. We could not check hydrolyzed collagen type II or BioCell Collagen for interactions—no data is on file for them.
Altogether, these interactions span 2 individual medications. If you take warfarin or any other blood thinner, run this product through the medication checker below before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Collagen Type II?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Collagen Type II interact with 2 drugs. Click any drug to see the details.
1 of the 3 ingredients in Collagen Type II interact with drugs. Each result below shows which ingredient is responsible. Chondroitin Sulfate
WarfarinWarfarin
How Warfarin interacts with Collagen Type II — through 1 ingredient. Tap an ingredient for the detail:
Chondroitin SulfateWarfarin (coumadin) Moderate
Interaction Summary
Taking chondroitin in combination with glucosamine might increase the anticoagulant effects of warfarin.
Read the full Chondroitin Sulfate + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Collagen Type II — through 1 ingredient. Tap an ingredient for the detail:
Chondroitin SulfateWarfarin (coumadin) Moderate
Interaction Summary
Taking chondroitin in combination with glucosamine might increase the anticoagulant effects of warfarin.
Read the full Chondroitin Sulfate + Warfarin Sodium interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Collagen Type II with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Chondroitin Sulfate
Warfarin (Coumadin)
Taking chondroitin in combination with glucosamine might increase the anticoagulant effects of warfarin. However, the effect of chondroitin alone is unclear.
There have been multiple reports of increased international normalized ratio (INR) in patients taking warfarin with glucosamine, with or without chondroitin. The lack of reports with chondroitin alone seem to suggest that the interactions occurring in these reports may have been due to glucosamine. In two individual case reports, glucosamine/chondroitin combinations were associated with a significant increase in INR in patients previously stabilized on warfarin. Additionally, 20 voluntary case reports to the US Food & Drug Administration (FDA) have linked glucosamine plus chondroitin with increased INR, bruising, and bleeding in patients who were also taking warfarin. There have also been 20 additional case reports to the World Health Organization (WHO) that link glucosamine alone, without chondroitin, to increased INR in patients taking warfarin.
Brand information
Manufacturer and brand details for Collagen Type II, from the product label.
Klaire Labs
See all Klaire Labs products- Name
- SFI USA
- City
- Reno
- State
- NV
- ZipCode
- 89521
- Web Address
- Klaire.com
Collagen Type II by Klaire Labs: Common Questions
Does Collagen Type II by Klaire Labs interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm pregnant or breastfeeding?
What side effects might I experience?
Does this really work for arthritis?
Why haven't you checked all the ingredients for drug interactions?
Is this safe to take long-term?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Collagen Type II is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Collagen Type II’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Chondroitin Sulfate
Interacts with 2 drugsChondroitin sulfate is a naturally occurring building block of cartilage that is widely taken, often with glucosamine, for osteoarthritis joint pain. The evidence is mixed—some people report...
Read the full Chondroitin Sulfate monograph → Herb & supplement monographHyaluronic Acid
Hyaluronic acid is a natural substance in the body that helps hold water in the skin, joints, and eyes. Oral and topical products are popular for skin moisture and joint comfort, and the evi...
Read the full Hyaluronic Acid monograph → Herb & supplement monographCollagen Peptides
Collagen peptides are a well-absorbed form of protein that may modestly improve skin elasticity and joint comfort for some people, though evidence is still developing and results vary. They...
Read the full Collagen Peptides monograph →Sources & How We Checked
Collagen Type II's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 28 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Chondroitin Sulfate 22 references
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Tallia AF, Cardone DA. Asthma exacerbation associated with glucosamine-chondroitin supplement. J Am Board Fam Pract 2002;15:481-4..
- Danao-Camara T. Potential side effects of treatment with glucosamine and chondroitin. Arthritis Rheum 2000;43:2853. PubMed
- Rozenfeld V, Crain JL, Callahan AK. Possible augmentation of warfarin effect by glucosamine-chondroitin. Am J Health Syst Pharm 2004;61:306-307. PubMed
- Clegg DO, Reda DJ, Harris CL, et al. Glucosamine, chondroitin sulfate, and the two in combination for painful knee osteoarthritis. N Engl J Med 2006;354:795-808. DOI
- Knudsen J, Sokol GH. Potential glucosamine-warfarin interaction resulting in increased international normalized ratio: Case report and review of the literature and MedWatch database. Pharmacotherapy 2008;28:540-8. PubMed
- Yue QY, Strandell J, Myrberg O. Concomitant use of glucosamine potentiates the effect of warfarin. Jan 2006. Drug Safety 29(10):911-1010. DOI
- Nordling, J. and van, Ophoven A. Intravesical glycosaminoglycan replenishment with chondroitin sulphate in chronic forms of cystitis. A multi-national, multi-centre, prospective observational clinical trial. Arzneimittelforschung. 2008;58(7):328-335. PubMed
- Nickel, J. C., Egerdie, B., Downey, J., Singh, R., Skehan, A., Carr, L., and Irvine-Bird, K. A real-life multicentre clinical practice study to evaluate the efficacy and safety of intravesical chondroitin sulphate for the treatment of interstitial cystit
- Oliviero, U., Sorrentino, G. P., De Paola, P., Tranfaglia, E., D'Alessandro, A., Carifi, S., Porfido, F. A., Cerio, R., Grasso, A. M., Policicchio, D., and . Effects of the treatment with matrix on elderly people with chronic articular degeneration. Drug
- Crowley, D. C., Lau, F. C., Sharma, P., Evans, M., Guthrie, N., Bagchi, M., Bagchi, D., Dey, D. K., and Raychaudhuri, S. P. Safety and efficacy of undenatured type II collagen in the treatment of osteoarthritis of the knee: a clinical trial. Int.J.Med.Sc PubMed
- Nickel, J. C., Egerdie, R. B., Steinhoff, G., Palmer, B., and Hanno, P. A multicenter, randomized, double-blind, parallel group pilot evaluation of the efficacy and safety of intravesical sodium chondroitin sulfate versus vehicle control in patients with
- Sawitzke, A. D., Shi, H., Finco, M. F., Dunlop, D. D., Harris, C. L., Singer, N. G., Bradley, J. D., Silver, D., Jackson, C. G., Lane, N. E., Oddis, C. V., Wolfe, F., Lisse, J., Furst, D. E., Bingham, C. O., Reda, D. J., Moskowitz, R. W., Williams, H. J.
- Wildi, L. M., Raynauld, J. P., Martel-Pelletier, J., Beaulieu, A., Bessette, L., Morin, F., Abram, F., Dorais, M., and Pelletier, J. P. Chondroitin sulphate reduces both cartilage volume loss and bone marrow lesions in knee osteoarthritis patients starti
- Pavelka and et al. Double-blind, dose effect study of oral cs 4 & 6 1200mg, 800mg, 200mg against placebo in the treatment of femorotibial osteoarthritis. Wular Rheumatol Liter 1998;27(suppl 2):63.
- Cerda C, Bruguera M, Parés A. Hepatotoxicity associated with glucosamine and chondroitin sulfate in patients with chronic liver disease. World J Gastroenterol 2013;19(32):5381-4. PubMed
- von Felden J, Montani M, Kessebohm K, Stickel F. Drug-induced acute liver injury mimicking autoimmune hepatitis after intake of dietary supplements containing glucosamine and chondroitin sulfate. Int J Clin Pharmacol Ther 2013;51(3):219-23. PubMed
- Provenza JR, Shinjo SK, Silva JM, Peron CR, Rocha FA. Combined glucosamine and chondroitin sulfate, once or three times daily, provides clinically relevant analgesia in knee osteoarthritis. Clin Rheumatol 2015;34:1455-62. PubMed
- Ossendza RA, Grandval P, Chinoune F, Rocher F, Chapel F, Bernardini D. [Acute cholestatic hepatitis due to glucosamine forte]. Gastroenterol Clin Biol. 2007 Apr;31(4):449-50.
- Greenlee H, Crew KD, Shao T, Kranwinkel G, Kalinsky K, Maurer M, Brafman L, Insel B, Tsai WY, Hershman DL. Phase II study of glucosamine with chondroitin on aromatase inhibitor-associated joint symptoms in women with breast cancer. Support Care Cancer 201 PubMed
- Chu EC, Huang KHK, Cheung G, Ng G, Lin A. Delayed Skin Allergy to Glucosamine Chondroitin Supplement. Cureus 2023;15(3):e36310. PubMed
- Lila AM, Alekseeva LI, Baranov AA, et al. Chondroitin sulfate and glucosamine combination in patients with knee and hip osteoarthritis: A long-term observational study in Russia. World J Orthop 2023;14(6):443-457. PubMed
Hyaluronic Acid 4 references
- Park Y, Song JS, Choi CY, Yoon KC, Lee HK, Kim HS. A randomized multicenter study comparing 0.1%, 0.15%, and 0.3% sodium hyaluronate with 0.05% cyclosporine in the treatment of dry eye. J Ocul Pharmacol Ther. 2017;33(2):66-72. PubMed
- U.S. Food and Drug Administration. Do Not Use Needle-Free Devices for Injection of Dermal Fillers - FDA Safety Communication. October 8, 2021. Available at: https://www.fda.gov/medical-devices/safety-communications/do-not-use-needle-free-devices-injection
- Disphanurat W, Srisantithum B. Efficacy and safety of 0.15% isobutylamido thiazolyl resorcinol combined with hyaluronic acid vs 0.15% isobutylamido thiazolyl resorcinol or hyaluronic acid alone in melasma treatment: A randomized evaluator-blind trial. J C PubMed
- Humbert P, Mikosinki J, Benchikhi H, Allaert FA. Efficacy and safety of a gauze pad containing hyaluronic acid in treatment of leg ulcers of venous or mixed origin: a double-blind, randomised, controlled trial. Int Wound J 2013;10(2):159-66. PubMed
Collagen Peptides 2 references
- Trc T, Bohmová J. Efficacy and tolerance of enzymatic hydrolysed collagen (EHC) vs. glucosamine sulphate (GS) in the treatment of knee osteoarthritis (KOA). Int Orthop. 2011;35(3):341-8. PubMed
- Evans M, Lewis ED, Zakaria N, Pelipyagina T, Guthrie N. A randomized, triple-blind, placebo-controlled, parallel study to evaluate the efficacy of a freshwater marine collagen on skin wrinkles and elasticity. J Cosmet Dermatol. 2021;20(3):825-834. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC