Tadasoft-20 tablet is a medication used to treat ED and pulmonary arterial hypertension (PAH). It is available in tablet form, typically in 20mg dose. The dose is adjusted by the professional based on the individual tolerability and response. It is important to note that Tadasoft-20 tablet should not be taken more than once a day, and it should not be taken with other medications used to treat ED. It typically takes about 30 minutes to an hour to start working and can last for up to 36 hours.