Cenforce 150 Red Pill is a medication containing sildenafil citrate, which is commonly used to treat erectile dysfunction (ED). Sildenafil citrate works by increasing blood flow to the penis, helping to achieve and maintain an erection when sexually aroused. While effective for many individuals, Cenforce 150 mg can cause side effects. Common side effects include headaches, flushing, dizziness, nasal congestion, and indigestion.