Megalis is available in 10 mg tablets and is typically taken 30 minutes to 1 hour before sexual activity. Unlike some other ED medications, Tadalafil has a long duration of action, lasting up to 36 hours, which allows for greater spontaneity in sexual activity. Sexual stimulation is required for the medication to be effective. Common side effects of Megalis may include headache, flushing, dizziness, nasal congestion, back pain, or mild stomach upset. Serious but rare side effects include prolonged erections (priapism), vision or hearing changes, or chest pain.
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