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Tadalafil (Cialis): uses, side effects & brands
Tadalafil is a long-acting erectile-dysfunction medicine, also used for BPH. It belongs to the Urology & men’s health group. These treat prostate enlargement, urinary symptoms and erectile dysfunction.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Urology & men’s health |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Erectile dysfunction
- Urinary symptoms of an enlarged prostate (BPH)
- Pulmonary arterial hypertension (specialist use)
Common brand names
- India: Tadact, Megalis, Tadarise
- Worldwide: Cialis, Adcirca
Common side effects
- Headache
- Indigestion
- Back or muscle pain
- Flushing or blocked nose
Before taking it — precautions
- Never take with nitrate heart medicines such as GTN or isosorbide (dangerous drop in blood pressure)
- Tell your doctor about heart disease, recent stroke or heart attack, or kidney or liver disease
- Tell your doctor about alpha-blockers and other blood-pressure medicines
When to see a doctor urgently
- Chest pain during sexual activity (urgent; do not take nitrates)
- An erection lasting more than four hours (emergency)
- Sudden loss of vision or hearing (urgent)
Not a prescription — no dose shown. The right dose of tadalafil depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
How long does tadalafil last?
Its effect can last up to about a day and a half, much longer than sildenafil.
Why does tadalafil cause back pain?
Back and muscle aches are a known side effect and usually settle within a couple of days.
Can tadalafil help prostate symptoms?
Yes, it is also approved to ease urinary symptoms of an enlarged prostate.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.