Glucosamine グルコサミン
One of the components of cartilage (an amino sugar).
In Japan: Foods with Function Claims notifications
Functions claimed (counted from notifications with this ingredient alone)
| Function | Notifications |
|---|---|
| Knees, lower back, and joints | |
| Bones | |
| Walking ability and exercise |
Examples of notified claims (our translation)
This product contains glucosamine hydrochloride. Glucosamine hydrochloride has been reported to improve the range of motion of the knee and to reduce a feeling of discomfort in the knee.
This product contains glucosamine hydrochloride and shark cartilage-derived chondroitin sulfate. Through their action of protecting knee joint cartilage, they have the function of making it easier to bend and stretch the knees and helping improve walking ability in people who feel a decline in mobility, such as in walking, standing, and sitting. It is a food especially suited to people who feel discomfort in the knee joints.
This product contains glucosamine. Glucosamine has been reported to maintain joint cartilage by suppressing the excessive breakdown of cartilage components during exercise, walking, and the like.
Cautions written in the notifications (most common)
- “If you are taking a coumarin-type anticoagulant (warfarin), consult your doctor or pharmacist before use.” (5 notifications)
- “If you are taking warfarin or similar drugs, consult your doctor or pharmacist.” (3 notifications)
- “If you are taking a coumarin-type anticoagulant (warfarin), consult your doctor or pharmacist before use.” (3 notifications)
- “If you are taking medication (especially anticoagulants such as warfarin), consult your doctor.” (3 notifications)
Under Foods with Function Claims, the company notifies the Consumer Affairs Agency of the scientific evidence on its own responsibility; the government does not review or approve it. You can look up each product's notification by the number on the package in the Consumer Affairs Agency's database (Japanese).
In the EU: the register of health claims
Claim not authorised in the EU
- The "maintaining joints and cartilage" claim was not authorised because EFSA found it not substantiated (2009 and 2011 opinions).
In the EU, only health claims whose evidence has been assessed by the European Food Safety Authority (EFSA) and authorised by the European Commission may be used on food. “Not authorised” means the evidence for that claim was not established under EU standards — not that the ingredient is dangerous.
What the US NIH says
- For the pain and joint structure effects in knee osteoarthritis, study results are inconsistent and unclear.
- Glucosamine may raise blood sugar in some people, and it has been linked to a higher risk of bleeding in people taking the anticoagulant warfarin.
Sources: MHLW eJIM (MHLW's integrative medicine information site) "Glucosamine and chondroitin for osteoarthritis", NCCIH
Find products PR
These are Japanese online shops (affiliate links).
Example of a product notified with this ingredient
グルコサミン５００ （株式会社すみや）
Food with Function Claims, notification No. B55. Chosen from products sold on Rakuten whose names match a current notification to the Consumer Affairs Agency, picking one with many reviews.
See on Rakuten (kusurino-iq)See on Amazon.co.jpThis database does not guarantee any product's effect. For Foods with Function Claims, check the notification number on the package; for Foods with Nutrient Function Claims, check the amount per daily serving.
Compare “グルコサミン サプリ” products on RakutenCompare “グルコサミン サプリ” products on Amazon.co.jpOther ingredients in the same categories
This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.