Caverta 100 mg works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5) that breaks down a molecule known as cyclic GMP (cGMP). This molecule helps relax the blood vessels in the penis, allowing for increased blood flow. As a result, Caverta helps men achieve and maintain an erection in response to sexual stimulation. Caverta 100 mg can be a highly effective treatment for ED, but it should only be used under the supervision of a healthcare provider. If you experience any side effects or discomfort, consult with your doctor to ensure safe and effective use.