What is the difference between tadalafil without a prescription and sildenafil, e.g. Viagra?

Although both drugs belong to the same group - phosphodiesterase type 5 (PDE5) inhibitors, the most important difference is the duration of action of the drugs. After taking a tablet with sildenafil, the effect lasts for an average of 6 hours, while tadalafil works much longer - up to 36 hours, of course, under the condition of sexual stimulation (this does not therefore mean a constant erection, but only an erection during arousal). The onset of action occurs on average after 30 minutes with sildenafil and 20 minutes - tadalafil. Therefore, these preparations are taken about 30 minutes before intercourse. The effectiveness of tadalafil is estimated at 87%, sildenafil - 83%. We write about how tadalafil works here: https://www.gdziepolek.pl/substancje/tadalafil More information about drugs used in erectile dysfunction can be found here: https://www.gdziepolek.pl/kategorie/leki-na-potencje