Silagra 50 mg also contains sildenafil, so its side effects are similar to other sildenafil products. Common side effects include: Headache – the most frequently reported. Flushing – warmth or redness in the face, neck, or chest. Indigestion or stomach upset (dyspepsia). Nasal congestion – stuffy or runny nose. Dizziness – sometimes with lightheadedness. Visual changes – like blurred vision, sensitivity to light, Silagra 50 mg a blue tint (rare). Muscle or back pain – usually mild and temporary. Important warnings: Seek immediate medical attention if you experience chest pain, severe dizziness, fainting, or an erection lasting more than 4 hours (priapism). Avoid taking sildenafil with nitrates or certain heart medications, as dangerous drops in blood pressure can occur. Most side effects are mild and temporary, but it’s important to monitor your body’s response the first time you take it. If you want, I can make a quick table of all common and rare side effects for easy reference.