Tadagra 20 mg is a medication that contains tadalafil as its active ingredient. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED) in men. Tadagra 20 mg is a tablet form of medication that is designed to be taken orally. Tadagra 20 can remain effective for up to 36 hours after ingestion, allowing for a prolonged period of sexual activity and flexibility in timing.