Calcium カルシウム
A mineral.
In Japan: Foods with Nutrient Function Claims and the Dietary Reference Intakes
- Wording allowed (current)
- “Calcium is a nutrient necessary for the formation of bones and teeth.”
- Amount per daily serving
- 204-600 mg (within this range, the wording above may be used without notification)
- Proposed revision
- “Calcium is one of the nutrients necessary for building bones and teeth.”Amount: 210-600 mgReferred to the Consumer Commission on July 17, 2026. The proposal includes a transition period allowing the current wording until March 31, 2030.
- Dietary Reference Intakes (2025, ages 30–49)
- Recommended dietary allowance: men 750 mg, women 650 mg / tolerable upper intake level 2,500 mg
In Japan: Foods for Specified Health Uses (FOSHU)
Approved claims by category: Bones 27, Menstruation and menopause 1, Teeth and mouth 1
Calcium from this product is highly absorbable by the human body, making it suitable for taking in calcium, which tends to be lacking in the diet.
This product contains calcium and soy isoflavone aglycone and is a food that helps keep the gums, which support the teeth, healthy. It is suitable for women after menopause.
FOSHU products are reviewed and approved one by one by the government (Consumer Affairs Agency) for effectiveness and safety. The counts are of products whose functional ingredient matches this ingredient. Source: Consumer Affairs Agency, list of approved FOSHU products (Japanese). Claims are our translation.
In the EU: the register of health claims
EU-authorised claimIn the register: 12 authorised, 11 not authorised
- Claims such as maintenance of bones and teeth, muscle function, and blood clotting are authorised.
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
- Large trials show it helps maintain bone density, but the effect on reducing fractures is not consistent, and no preventive effect on heart disease or cancer has been found.
- Taking a lot from supplements causes kidney stones, constipation, and other problems. It reduces the absorption of quinolone antibiotics and thyroid hormone medication.
Sources: MHLW eJIM "Calcium"
Find products PR
These are Japanese online shops (affiliate links).
Example of a product labeled as a Food with Nutrient Function Claims
Chosen from products on Rakuten with “栄養機能食品” in the name, picking one with many reviews. Check the amount per daily serving on the package.
See on Rakuten (dhcshop)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 “カルシウム サプリ 栄養機能食品” products on RakutenCompare “カルシウム サプリ 栄養機能食品” products on Amazon.co.jpRelated articles
Other ingredients in the same categories
This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.