Zenegra 100 mg, like Viagra and other Sildenafil-based erectile dysfunction (ED) medications, is sometimes linked to vision problems due to the way it works in the body. The active ingredient in Zenegra is Sildenafil, which primarily helps with erectile dysfunction by increasing blood flow to the *****. However, it can also have effects on other parts of the body, including the eyes.

How Sildenafil Affects Vision:

Sildenafil works by inhibiting the enzyme PDE5 (phosphodiesterase type 5), which plays a key role in the breakdown of cGMP (cyclic guanosine monophosphate). This molecule helps relax smooth muscles and widen blood vessels in the ***** to allow for better blood flow during ***** arousal.

However, cGMP is also present in other parts of the body, including the eyes. PDE5 inhibition increases the levels of cGMP in the retina (the light-sensitive part of the eye). This increase can affect the function of certain proteins in the retina that are involved in visual processing.