Tadalafil
Generic Name: Tadalafil
Uses & Medical Indications
Treatment of erectile dysfunction, benign prostatic hyperplasia
Erectile dysfunction (ED), BPH, Pulmonary arterial hypertension (PAH)
Work Mechanism & Pharmacology
Patient Overview of Work Mechanism
Tadalafil works at the cellular level to correct underlying biochemical imbalances, reduce clinical symptoms, and support overall health.
Clinical Mechanism of Action (MoA)
Tadalafil exerts targeted therapeutic activity by interacting with specific cellular receptors, enzymatic pathways, or biological signaling cascades to relieve symptoms and restore physiological balance.
Dosage & Administration Guidelines
10 mg as needed for ED; 5 mg daily for BPH
Not recommended
Consider lower starting dose
20 mg/day for ED; 40 mg/day for PAH
Max 5 mg/day if severe impairment
Max 10 mg as needed if mild/moderate; avoid in severe
Side Effects & Safety Warnings
Headache, dyspepsia, back pain, myalgia
Priapism, sudden vision loss, sudden hearing loss
Concurrent use of nitrates or guanylate cyclase stimulators
Cardiovascular risk, potential for prolonged erection
Interactions (Drugs, Food & Alcohol)
Nitrates, alpha-blockers, antihypertensives, CYP3A4 inhibitors
Grapefruit juice may increase exposure
May increase risk of orthostatic hypotension
Pregnancy & Breastfeeding Safety
Not indicated for use in females (unless PAH)
N/A
Patient Counseling & Practical Advice
Seek immediate medical help if erection lasts >4 hours
Take as soon as remembered, but do not take more than one dose daily
Blood pressure, heart rate
When to Seek Urgent Medical Attention
Seek immediate emergency medical care (call emergency services or proceed to the nearest emergency department) if you experience signs of a life-threatening allergic reaction (anaphylaxis: facial, lip, tongue, or throat swelling causing airway obstruction), severe cutaneous blistering with skin peeling, sudden intense chest pain, or symptoms of overdose.
Content for Tadalafil was synthesized from standardized public health monographs, official pharmacopoeias, and health authorities:
- Central Drugs Standard Control Organization (CDSCO) — National List of Essential Medicines
- World Health Organization (WHO) — Model List of Essential Medicines
- Indian Pharmacopoeia Commission (IPC) — Indian Pharmacopoeia Drug Monographs
- National Health Service (NHS) — Medicines A to Z Clinical Guidelines
The information provided on this website is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.