Coenzyme Q10 Supplementation in Multiple Sclerosis

Mechanism of Action and Safety

CoQ10 plays a fundamental role in mitochondrial bioenergetics as an electron and proton carrier, facilitating cellular energy (ATP) production, and functions as the only endogenously synthesized lipid-soluble antioxidant, protecting cellular membranes against free radical damage 1
CoQ10 supplementation appears to be safe with minimal side effects even at high doses, with doses up to 3000 mg/day for 8 months being well-tolerated in neurological conditions 2
Potential side effects of CoQ10 supplementation may include gastrointestinal symptoms and elevated liver enzymes, with monitoring recommended 2, 3

CoQ10 is available in two forms: ubiquinol and ubiquinone, with the intestinal absorption being relatively low due to its hydrophobicity and large molecular weight 1
Peak plasma levels of CoQ10 typically occur 5-10 hours after ingestion, with endogenous synthesis occurring at an estimated rate of 500 mg/day but may decline with age 1
Monitoring liver enzymes is recommended for patients on CoQ10 supplementation 3

Lower doses of CoQ10 (100-200 mg/day) have been studied for cardiovascular benefits 4