Ubiquinol
Ubiquinol is the reduced form of CoQ10, an endogenous compound. The NIH ODS notes it is generally well tolerated; FDA considers CoQ10 ingredients safe at typical supplemental levels (≤200 mg/day common).
What it is
Ubiquinol, the reduced form of coenzyme Q10 (CoQ10).
Nutritional supplement; antioxidant.
Why it's flagged
- mild GI side effects at high doses
- possible interaction with anticoagulants
What regulators actually say
"Coenzyme Q10 supplements appear to be safe and to produce few side effects when taken as directed."
"The Panel concludes that synthetic ubiquinol is safe for the general population at the proposed uses and use levels in food supplements."
Regulatory status
United States — FDA
Marketed as a dietary supplement under DSHEA; no specific food additive listing required.
European Union — EFSA
EFSA Novel Food opinion 2018 — safe for use in food supplements.
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