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

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 ...

(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 ...