and most certainly don't exceed the "recommended dosage". Man has permanent red vision from taking ED meds.
According to recent entry in the journal Retinal Cases, researchers believe a 31-year-old man sustained irreversible vision problems caused by an erectile dysfunction drug. The patient, who has no history of eye ailments, began experiencing red-tinted vision shortly after he consumed sildenafil citrate—the active ingredient in popular erectile dysfunction medications. The man told doctors he had purchased the drug online and took it in liquid form. He also admitted to taking more than the recommended 50 mg dose, a decision that has been linked to his yearlong vision issues.
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