We’ve also discussed: Currently, 100mg is the highest dose of sildenafil that’s approved by the FDA for treating ED. It is okay to take a 100mg dose of sildenafil, but normally, you'll only be ...

Vardenafil typically starts working faster, around 15 to 30 minutes after ingestion, while sildenafil may take 30 to 60 ...

Men and women who take selective or nonselective serotonin ... Studies of selective phosphodiesterase type 5 inhibitors (sildenafil [Viagra], vardenafil [Levitra], and tadalafil [Cialis]) as ...

Be sure to inform your healthcare provider of any other medication you take before you start taking Viagra or similar PDE5 inhibitors. Our guide to sildenafil interactions lists major interactions ...