​Kamagra Gold 100 mg contains Sildenafil Citrate, a phosphodiesterase type 5 (PDE5) inhibitor, primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection. ​ Common side effects may include flushing, headache, dizziness, blurred vision, muscle pain, stomach upset, and rash. Serious adverse effects can occur, especially among individuals with heart conditions.