Extra Super P Force contains two active ingredients that work at a physiological level in treating erectile problems in men. One active ingredient present in the medication is Sildenafil Citrate. This same active ingredient is present in the popular erectile dysfunction medication Viagra. Sildenafil prevents the PDE-5 enzyme from affecting another enzyme known as cyclic GMP. This enzyme helps relax the muscles in the genital area resulting in increased blood flow, allowing you to achieve an erection upon sexual arousal.