Precautions before using Viagra
Elaborate your doctor your entire medical history, including any allergies (especially drug allergies), any penis conditions such as fibrosis/scarring, history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (such as leukemia or myeloma), or Peyronie’s disease, eye problems (retina diseases).
Kidney or liver disease, bleeding disorders or active stomach ulcers, heart diseases, stroke or severe high or low blood pressure should also be explained.
Viagra side effects
Like all other medications, Viagra is able to cause some side effects. These side effects are usually mild to moderate and normally don’t last longer than a few hours. Some of these side effects are more likely to occur when you use the higher doses. The most common side effects of Viagra are headache, flushing of the face, and upset stomach. Less common side effects that may occur are temporary changes in color vision (such as trouble telling the difference between blue and green objects or having a blue color tinge to them), eyes being more sensitive to light, or blurred vision.