Tadalista CT 20 is used to treat erectile dysfunction and is a PDE-5 (phosphodiesterase) inhibitor. This medicine contains tadalafil which increases blood flow to the penis and relaxes the penile blood vessels. Take medications as directed by the doctor with or without food. Do not take the medicine more than once. The dosage depends on the patient's condition and the patient's response to treatment, which varies from person to person. Cold drinks or alcohol should not be consumed while taking this medicine as its side effects are directly felt in your body. This medicine is recommended only for men aged 18 or above.