CoQ10 (2007, 2015) Benefit for Diabetic Retinopathy


High levels of free radicals are found in patients with diabetic retinopathy. Research suggests that powerful antioxidants like CoQ10 may be helpful.


This study was designed to investigate the levels of free radicals circulating in the blood of patients with nonproliferative diabetic retinopathy before and after supplementation with CoQ10 and two other nutrients known to be helpful for patients at risk for diabetic retinopathy.

Two groups were tested, a control group and a test group given a combination of 50 mg pycnogenol, 30 mg Vitamin E and 20 mg CoQ10. They found that the group given the combination of nutrients experienced significantly lowered levels of free radicals.

Domanico, D., Fragiotta, S., Cutini, A., Carnevale, C., Zompatori, L., et al. (2015). Circulating levels of reactive oxygen species in patients with nonproliferative diabetic retinopathy and the influence of antioxidant supplementation: 6-month follow-up. Indian J Ophthalmol, Jan;63(1):9-14.