In 1989, two British scientists with Pfizer created a drug to help treat high blood pressure. Eventually, the drug was found to have effects on men and their erections. For twenty years, Viagra has been used to treat erectile dysfunction.
Sildenafil, the generic name, is a drug that is used to treat erectile dysfunction and high blood pressure in the lungs. It is more commonly known as Viagra. It is taken orally in a tablet or liquid form. It comes in dosages that range from 25 to 100 mg. For erectile dysfunction, a person takes the medication one hour before sexual activity, once every 24 hours. If being taken for high blood pressure, the medication is taken three times each day, 4 to 6 hours apart. In most people Viagra will begin to take effect within 30 minutes. The effects of the drug can last anywhere from 2 hours up to 5 hours. In people who are older, it can take longer for the drug to metabolize so older patients may feel the effects longer.

Viagra online in South Africa

Side effects
There are some possible side effects to taking Viagra. Some of the less serious side effects are headache, nosebleeds, a stuffy or runny nose, or an upset stomach. A person can also experience warmth or redness in the upper part of the body. They can also experience vision or hearing problems. Some of the more serious side effects involve allergic reactions such as hives and difficulty breathing. It can also cause chest pain, problems with breathing, and uneven heartbeat. In men, if Viagra is combined with certain drugs, both legal and illegal, they can experience priapism or an erection that lasts more than four hours. This can lead to long term damage to the penis and pain.
When taking Viagra there are certain drugs and food to avoid. It is recommended that Viagra not be taken in conjunction with riociguat and other nitrate medications. Tadalafil and vardenafil are similar medications and should also not be used. It can also interact with drugs that help with prostate or other high blood pressure problems. It is recommended that no more than one serving of alcohol be consumed if taking Viagra since alcohol can interact with the drug.
Viagra can also cause problems with certain health issues. For example, people with high or low blood pressure, heart problems such as a heart attack or heart disease, or history of a stroke may have an adverse reaction to Viagra. People with liver and kidney problems can also have issues with metabolizing the drug and experience the effects of the drug longer.

Viagra online
Viagra can be purchased online in South Africa without a prescription from a variety of online pharmaceutical companies. However, a doctor must have previously prescribed the medication for the patient before he or she can order from the companies. Usually, a doctor associated with the online pharmacy has to approve of the prescription or will contact the person ordering the medication for more information. There is also a limit of 16 pills per month when ordering.

Viagra price

Prices can range from 400 ZAR to 800 ZAR depending upon the dosage and number of pills. Generic versions can be as low as 13 ZAR per pill. The medication is mailed to the home and can be tracked online for details on the date of delivery. Most prescriptions will take one to two weeks to arrive through the mail.