Tadalafil acts as an active ingredient in Tifil A Pills, Tifil is mainly taken one hour before sex, after which its effect lasts for 36 hours. Tifil is considered to be the best and most used solution to the problem of ED. It is important to consult a doctor before taking Tifill. Tifil must be taken once in 24 hours. These pills should not be used by people under 18 years of age.