Medications · FAQ
How long does tadalafil take to work, and what does up to 36 hours mean?
Short answer
As-needed tadalafil is usually taken at least 30 minutes before sex, and it may support erections for up to 36 hours. Results vary. This is a window when the medicine may help during sexual arousal, not a prediction that an erection will last that long.
As-needed tadalafil is usually taken at least 30 minutes before planned sexual activity. It may support the ability to get an erection for up to 36 hours after a dose. Results vary. Some people need more time before they notice an effect, and the response may differ from one occasion to another.
The 36-hour window does not mean you should have a constant erection. Sexual arousal is needed for tadalafil to help. An erection that lasts more than four hours is a medical emergency, even if it is not painful. Get emergency care right away rather than waiting for the medicine to wear off.
Daily tadalafil follows a different schedule. You take it around the same time each day, rather than timing each dose around sex. It takes several days of regular use to reach steady levels in the body.
Follow your prescribed schedule. Do not take an extra dose because the first dose seems slow to work.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.
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