Coenzyme Q10 コエンザイムQ10
A substance the body already makes. It is abundant in the heart, liver, kidneys, and other organs.
In Japan: Foods with Function Claims notifications
Functions claimed (counted from notifications with this ingredient alone)
| Function | Notifications |
|---|---|
| Stress and tension | |
| Fatigue | |
| Skin moisture | |
| Sleep quality | |
| Teeth and mouth | |
| Memory and cognitive function |
Examples of notified claims (our translation)
This product contains reduced coenzyme Q10. Reduced coenzyme Q10 has been reported to have functions of maintaining skin turnover in healthy women, helping keep the skin moist, and helping reduce temporary stress in people who are feeling transient stress.
This product contains reduced coenzyme Q10. Reduced coenzyme Q10, which helps cells produce energy and relieves oxidative stress, has been reported to help reduce transient physical and mental fatigue that arises in daily life.
This product contains reduced coenzyme Q10. Reduced coenzyme Q10 has been reported to have functions of maintaining skin turnover in healthy women and keeping the skin moist.
Cautions written in the notifications (most common)
- “Depending on your constitution or condition, this product may rarely not suit you (rash, stomach discomfort, etc.).” (10 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
- Claims such as "produces energy," "blood pressure," "cognitive function," and "endurance" were not authorised, because EFSA found the effect not substantiated (2010 opinion).
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
- No evidence has been shown that it helps with preventing heart disease, blood pressure, muscle pain from statins (cholesterol drugs), or early Parkinson's disease.
- No serious side effects have been reported, but it may interact with warfarin, an anticoagulant, and with insulin, a diabetes drug.
Sources: MHLW eJIM (integrative medicine information site) "Coenzyme Q10", NCCIH
Find products PR
These are Japanese online shops (affiliate links).
Example of a product notified with this ingredient
還元型コエンザイムＱ１０ （株式会社ユニマットリケン）
Food with Function Claims, notification No. G1291. 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 (benkyo)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 “コエンザイムQ10 サプリ” products on RakutenCompare “コエンザイムQ10 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.