Viagra is a brand name for sildenafile. It is a drug that is used to cure erectile dysfunction by relaxing the body muscles and increasing the blood flow to various parts of the body including a man's penis. Today Viagra can also be used by women though some doctors do not prescribe it to women. It is important to know all important information about Viagra before you begin its medication. This is a drug that can lead to very serious health conditions when it is overused thus, it is very necessary to strictly follow your doctor’s advice while under Viagra medication.

You should not use Viagra when you are under nitrate treatments such as treatment for chest pains. This is because combining Viagra with nitrates can seriously lower the patient’s blood pressure which is very risky for one's health. This can also cause heart attack, stroke, and fainting among others. When you experience nausea, become dizzy, tingling in your neck region, tingling in your chest or when you experience any uncomfortable pain while having sex, you should stop immediately and call your doctor as it can be due to a serious side effect of Viagra.

Viagra must be taken only once in every twenty four hours. When you experience painful erections or when your erections lasts for long especially more than four hours, you should contact your doctor immediately because painful erections or erections that last for long can damage your penis. Note that Viagra can lead to vision loss because it lowers the amount of blood that flows into the optic nerves. This is a problem that can affect the ones who use the drug in high quantities and the ones who are suffering from other health conditions such as diabetes, high blood pressure and heart disease.

Old individuals who are over fifty years can also experience vision loss therefore they should avoid or consume Viagra in very small quantities. In case of a sudden vision loss, you should stop using Viagra and seek medical attention immediately. You should discuss with your doctor about your past and present health conditions before you begin using Viagra. This will help your doctor to give you the correct prescription depending on your condition and age. It will also help you to be sure that you are fit for Viagra medication. Your doctor should also know if you are allergic to some drugs or if you are under other treatments.

Your doctor must know whether you have suffered from heart diseases, liver disease, coronary artery disease, congestive heart failure, kidney problem, high or low blood pressure, blood cell disorder, stroke, stomach ulcer, bleeding disorder and physical penile deformity among others before you begin Viagra medication. Some of these health conditions should not be combined with Viagra while others may call for adjustment of Viagra dosage. Viagra is not safe for unborn children or breastfeeding women because it can harm the fetus or young children therefore you should not use it when you area planning to become pregnant.