Blog: Tunnel Vision: VIAGRA® Users Should Weigh the Ups with Potential Downsides of ED Drugs
A new study suggests there may be a link between sildenafil, the active ingredient in VIAGRA, and irreversible vision loss. Researchers at the University of South Wales School of Optometry and Vision Science found that sildenafil inhibited an enzyme which helps transmit light signals from the retina to the brain in mice.
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