While dosing for Viagra® and tadalafil are different, tadalafil does have one big advantage: it lasts longer than Viagra® (up to 36 hours rather than 4 to 5).
While dosing for Viagra® and tadalafil are different, tadalafil does have one big advantage: it lasts longer than Viagra® (up to 36 hours rather than 4 to 5).