Viagra is generally well-tolerated, but like all medications, it can cause side effects. Understanding these helps you use it safely. Common Side Effects Headache (most common, ~16% of users) Facial flushing Indigestion or heartburn Nasal congestion Dizziness Mild visual changes (rare) Rare but Serious Side Effects Priapism (erection lasting >4 hours — medical emergency) Sudden[…]
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Viagra has helped millions of men worldwide. But how does it actually work? The Science Viagra belongs to a class of drugs called PDE5 inhibitors. During arousal, the body releases nitric oxide in the penis, triggering cyclic GMP production. This relaxes blood vessels, allowing increased blood flow. Viagra blocks the PDE5 enzyme that breaks down[…]