Injection: PT-141 can also be injected subcutaneously. The dosage varies based on individual needs but is generally administered before sexual activity.
Sildenafil: Typically taken 30 minutes to 1 hour before sexual activity. It lasts for about 4 to 6 hours.
Tadalafil: Can be taken as needed before sexual activity or in a daily low-dose form for continuous treatment. It can last up to 36 hours, allowing for more spontaneity.