Viagra

Viagra

Levitra

Levitra

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Sildenafil citrate, sold under the name Viagra, is a drug used to treat male erectile dysfunction (impotence) and pulmonary arterial hypertension (PAH).

Vardenafil, sold under the name Levitra, is a drug used in the treatment of erectile dysfunction.

Validity: 50%

Viagra is developed and marketed by Pfizer.

Levitra is developed and marketed by Bayer AG.

Validity: 50%

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