Glucosamine, chondroitin and MSM
Sulphate or hydrochloride, from shellfish or vegan, with chondroitin and MSM: what joint supplements contain and how to read the label.
This substance has no health claim authorised in the European Union. So we describe what it is and how it is taken, but do not say what it does in the body.
What it is
Glucosamine is an amino sugar the body makes itself. Supplement glucosamine comes from shellfish shells or from fermented corn (the vegan option). Chondroitin is mostly made from animal or fish cartilage; MSM (methylsulfonylmethane) is an organic sulphur compound.
Claims that glucosamine and chondroitin benefit the joints were assessed in the European Union and not authorised. So we describe contents and choice, but do not write about effects on joints or cartilage.
How to read the label
Glucosamine comes as sulphate or hydrochloride; the label states the weight of the salt. Complexes often combine glucosamine, chondroitin, MSM, collagen, hyaluronic acid, vitamin C and manganese. Vitamin C and manganese have authorised claims in the EU — they show on a product when their dose is enough.
How it is taken, and precautions
Take as the pack directs, usually with a meal. Glucosamine from shellfish is not for people allergic to shellfish — look for a vegan one. People with diabetes, those on blood thinners, and pregnant or breastfeeding women should ask a doctor first.
Frequently asked questions
Is there glucosamine without shellfish?
Yes, vegan glucosamine is made by fermenting corn. The pack usually says so.
How do sulphate and hydrochloride differ?
They are different glucosamine salts: hydrochloride holds more glucosamine per gram of salt. Compare the glucosamine per daily dose.
What is MSM?
Methylsulfonylmethane — an organic sulphur compound, often added to glucosamine complexes.
Products with glucosamine, chondroitin and msm
