Quick Summary
Tadalafil (Cialis) is a long-acting PDE5 inhibitor used to treat erectile dysfunction and sometimes benign prostatic hyperplasia (BPH). It can be used as-needed or in low daily doses.
- Duration: up to 36 hours
- Daily use: 2.5–5mg
- As-needed use: 10–20mg
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Frequently Asked Questions
Tadalafil can remain effective for up to 36 hours, making it the longest-acting ED medication.
Yes. Daily tadalafil is usually prescribed at 2.5mg–5mg for continuous effect.
Cialis is the brand name, while tadalafil is the active ingredient (generic version).
Small amounts are usually safe, but heavy alcohol use increases risk of dizziness and low blood pressure.
It typically starts working within 30–60 minutes after taking a dose.
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