Tadalista CT 20 combines tadalafil with other medications to treat premature ejaculation and male erectile dysfunction. Tadalafil and other phosphodiesterase type 5 inhibitors work by increasing blood flow to the penis both during and after sexual stimulation, which enables an erection. Take this drug as directed by your physician, both in terms of dosage and timing. Eat everything at once. Never crush, eat, or break it. It is advisable to take it at a specific time, but it can be taken with or without food. Tadalafil functions by blocking the PDE5 enzyme, which regulates blood flow to the penis. It will function in 30 minutes.