Forzest 20 mg is a medication primarily used to treat erectile dysfunction (ED) in men. It contains tadalafil, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Tadalafil works by increasing blood flow to the during stimulation, thereby helping men achieve and maintain an erection. Forzest 20 mg tablets typically contain 20 milligrams of tadalafil. The recommended starting dose for most men is 10 mg taken prior to anticipated activity, but the dosage may be adjusted based on individual response and tolerability. For some individuals, a higher dose such as Forzest 20 mg may be appropriate. Forzest 20 mg usually starts to work within 30 minutes to one hour after ingestion. However, the onset of action can vary depending on individual factors such as metabolism, diet, and overall health.