Cenforce 100mg is a widely prescribed medication used to treat erectile dysfunction (ED) in men. Its active ingredient, Sildenafil Citrate, is the same as that in the well-known medication Viagra. Sildenafil is a PDE5 inhibitor, which means it works by blocking the enzyme that degrades cyclic guanosine monophosphate (cGMP) in the body.

This enzyme regulation leads to relaxation of the smooth muscles in the blood vessels of the penis, allowing more blood to flow into the area, which is crucial for achieving and maintaining a strong erection. 

It is usually prescribed as the starting dose, though it may be adjusted based on individual response. The medication is typically taken 30 to 60 minutes before sexual activity, and its effects can last for 4 to 6 hours.

This allows a reasonable window for sexual activity without the need for precise timing. Cenforce 100mg does not cause an erection automatically; it requires sexual stimulation to be effective.

Therefore, it’s important to note that Cenforce should not be relied upon for spontaneous erections without the right physiological triggers.