Step2 Know how erection medications work. Currently there are four prescription drugs available for erection problems: Viagra, ****, **** and Yohimbine. They all essentially work the same way. Sexual arousal stimulates release of a compound, nitric oxide (NO), in the ****. Nitric oxide, in turn, triggers synthesis of cGMP, which relaxes the ****’ smooth muscle tissue, and allows extra blood to flow into the organ’s spongy central erectile tissues. Erection drugs enhance this smooth muscle relaxation, spurring greater blood flow into the ****.
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