Before taking Viagra, precautions and warnings should be observed for safety. Men with cardiovascular problems are advised to see their doctor if planning to take Viagra. Also, it is essential to inform your medical health provider if you are taking any other medication or supplement. One example, if you are taking nitrate-based drug combined with Viagra is dangerous. It can cause severe drop of blood pressure.
Other medical conditions that prohibits the use of Viagra or for your doctor to be aware of before taking Viagra:
* peptic ulcer
* sickle cell anemia
* multiple myeloma
* leukemia
* HIV or AIDS
* history of heart attack within the last 6 months
* birth defective penis, curve penis
* retina disorder
* severe kidney problems
* severe liver problems
Other than these listed essential points, if you take Viagra and experience chest pain or nausea during sexual intercourse, inform your doctor then. Failure to seek proper precautions or treatment can lead to serious harm.