A 12 week double-blind, placebo-controlled trial of 83 people with systolic hypertension examined the effect of CoQ10 supplements (60 mg twice daily). After the 12 weeks, there was a mean reduction in systolic blood pressure of 17.8 mm Hg in the Coq10-treated group.
Another study conducted at the University of Western Australia looked at the effect of CoQ10 on blood pressure and glycemic control in 74 people with type 2 diabetes. Participants were randomly assigned to receive either 100mg CoQ10 twice daily, 200mg of the drug fenfibrate, both, or neither for 12 weeks.
Dosage
A typical CoQ10 dosage is 30 to 90 mg per day, taken in divided doses, but the recommended amount can be as high as 200 mg per day.
CoQ10 is fat-soluble, so it is better absorbed when taken with a meal that contains oil or fat.
The clinical effect is not immediate and may take up to eight weeks.