Similar medications and substitutes for sildenafil citrate
In short: Viagra (sildenafil citrate) belongs to the Phosphodiesterase 5 Inhibitors class. The medications listed below either share that mechanism of action or have been clinically validated as substitutes when Viagra is unsuitable due to side effects, cost, availability, or contraindications.
No alternatives are listed for Viagra in our database yet. Browse the full medicine index or consult your pharmacist for substitution advice.