Cialis is a trading name for the very effective ED solution – Tadalafil. It’s PDE-5 inhibitor functions are responsible for its better effect for erectile dysfunctions. First, let us understand what is erectile dysfunction. ED is a highly prevalent problem which a major male population is combating against. In erectile dysfunction, due to insufficient blood flow towards the penis, a male fails at maintaining the erection for longer. The reason is a higher concentration of PDE enzyme which reduces the synthesis of cGMP (cyclic guanosine monophosphate). This is accompanied by the release of nitric oxide which relaxes the penile arteries.

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