Megalis 20 mg (Tadalafil) based on available sources. This is for informational purposes only; always consult a doctor or pharmacist for medical advice. Megalis 20 mg is an oral medication whose active ingredient is tadalafil, a type of phosphodiesterase type‑5 (PDE‑5) inhibitor. How It Works: Megalis works by relaxing the smooth muscles of blood vessels in the penis (and elsewhere), which increases blood flow when the user is sexually stimulated. It inhibits PDE‑5, an enzyme that breaks down cGMP; by reducing PDE‑5 activity, cGMP levels stay higher, helping maintain an erection. Onset & Duration: Typically, it takes about 30 to 60 minutes after oral intake before effects begin, with duration lasting up to 36 hours in many individuals. Dosage & Use: Usually taken as needed, about 1 hour before sexual activity. Whole tablet should be swallowed with water; can be taken with or without food. Not Megalis 20 mg be used more than once in 24 hours unless advised. Side Effects & Precautions: Common side effects may include headache, flushing, nasal congestion, upset stomach, muscle or back More serious risks can occur if taken with nitrates (used in heart disease), or by people with severe heart, liver, or kidney conditions; also if recently had stroke, low blood pressure, etc. Allergic reactions, vision or hearing changes require urgent medical attention.
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