I looked up the article on CNN's site:
Patients studied had early-stage Parkinson's and took a placebo or CoQ10 in
doses of 300 milligrams, 600 mgs or 1,200 mgs daily. Their symptoms were
evaluated for up to 16 months. By the eighth month, the 23 patients on the
highest dose showed significantly less impairment than the others.
These are extremely high dosages.
Bobby