Nizagara sildenafil side effects:

The most common side-effects that Nizagara may cause are: headache; pain in the chest; flushing; upset stomach; indigestion or heartburn; pain in the stomach, back, muscles, or any limb; cough.

Tell your doctor if you have any of these severe symptoms:

sudden severe loss of vision or blurred vision;

changes in color vision;

sudden decrease or loss of hearing;

ringing in ears;

erection that lasts longer than 4 hours;

dizziness;

chest pain;

hives;

rash.

Such side effect of Nizagara as sudden partial or even full vision loss may occur. If that happens - call emergency as soon as possible and stop using Nizagara immediately. Though it is still not clear whether it is Nizagara that is the cause of vision loss as the group of people which experienced this side effect had other health issues(high cholesterol, or pre-existing eye problems, heart disease ,high blood pressure, smokers and people that are more than 50 years old).

Nizagara may also cause other side effects. Call your doctor if you have any unusual conditions while taking this medication.

Avoid drinking alcohol before or after taking Nizagara, as it can increase some of the side effects of Nizagara.