Study: Vitamins A / E (1993) & Retinitis Pigmentosa
Learn more about retinitis pigmentosa recommendations.
Researchers found significant benefit in providing vitamin A supplements and a potential adverse effect of vitamin E on 600 patients with retinitus pigmentosa. Large doses of vitamin A did not result in greater benefit.
They speculated that among patients with specific rod-specific gene defects vitamin A supplementation may provide benefit. No toxicity was seen for vitamin A or E. High dose vitamin A is not recommended for pregnant women or women planning to become pregnant due to the possibility of birth defects
Researchers: Berson, Rosner, Sandberg, Hayes, Nicholson, Weigel-DiFranco, and Willette, 1993.
Published: Archives of Ophthalmology (June 1993), volume 111(6), pages 761-772.