Viagra, produced by Pfizer, is one of the brand name medications of the generic Sildenafil (Revatio is another brand name drug with similar active compounds). Viagra is a vasodilator (widening of blood vessels to allow for more blood flow) used to treat erectile dysfunction (the inability to get or maintain an erection, sometimes called impotence) and pulmonary arterial hypertension. It was originally designed for the purpose of treating high blood pressure, which is ironic, because it is dangerous for people with high blood pressure to take Viagra and similar medications (Cialis, Staxyn, Levitra).

Buy Viagra online in South Africa

About prescription and how to buy
If you have a prescription from a physician licensed in South Africa, it is legal to buy Viagra over the internet as an citizen in South Africa. There are many sites to do this on, viagrastoresa.com, and others. Prices vary quite significantly between sites. Some charge up to 8 $/pill regardless of milligrams, while others charge just over 1 $/pill. It is often cheaper to buy them at a pharmacy but if discretion and privacy are worth the extra cost then this may be the route you want to pursue. It is worth noting however that there are also an endless number of scam websites that offer Viagra and other medications but will take your credit card information and send you fake medications or nothing at all. It is best to ask your doctor, physician, or trusted health care provider for recommendations on where to safely purchase your medications online.

Sid effects
Your doctor should also have provided you on information on side effects, but it is worth reiterating the ones that have the more dire consequences if they are not followed. Do not use medication for high blood pressure with Viagra as it can cause your blood pressure to dip dangerously low. Do not take Viagra if you have had a heart attack or stroke in the past 6 months or if you have Factor V blood clotting disorder, or if you have a blood clot, or your risk for a secondary stroke, heart attack, or pulmonary embolism is significantly increased. These are all mood killers if you are trying to maintain an erection. Do not take Viagra with alcohol, which is also a blood thinner and can cause blood pressure to dip dangerously low.

About Priapism
Priapism, or a painful prolonged (lasting more than 4 hours) erection is a rare but possible side effect of taking Viagra. It is more common in men with sickle cell anemia and leukemia but can happen to anyone who takes Viagra or similar medications. If this happens consult your doctor immediately.

This condition can be treated in a doctor’s office with a shunt if the condition is severe enough (as was the case of a 25 year old man who took 50mg of Sildenafil and had an erection that lasted 4 days: http://www.urologyannals.com/article.asp?issn=0974-7796;year=2009;volume=1;issue=2;spage=67;epage=68;aulast=Sharma, this is not typical treatment of priapism).

Many people believe that taking Viagra will cause an erection. It is important to understand that simply taking the medication does not cause an erection. Viagra and similar drugs ENABLE erections. The medication must be paired with physical or psychological sexual stimulation to produce an erection. Viagra does not work for all conditions that cause erectile dysfunction, but it has been proven effective and safe for a large number of root causes of erectile dysfunction.