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

(Spoiler: It is.) While generic sildenafil and Viagra are equally safe and effective phosphodiesterase type 5 (PDE5) inhibitors, they have one key difference: price. Viagra costs $90 to $139 per ...

Here’s how to identify Viagra, sildenafil ... Tadalafil is more affordable. It’s usually between $1 and $20 per pill. Cialis and tadalafil use the same active ingredient. The difference ...