Malegra 100 mg contains sildenafil, a PDE5 inhibitor used to treat erectile dysfunction (ED). Sildenafil increases blood flow to the penis when sexual stimulation occurs, which can help men achieve and maintain an erection. Performance anxiety can contribute to ED. Worry about sexual performance may activate the body's stress response, making it harder to obtain or maintain an erection. In men whose anxiety occurs alongside physical ED, sildenafil may help by improving erectile reliability. However, it does not treat anxiety itself.