Viagra is a popular and widely know pharmaceutical drug, that was originally created in the United Kingdom by Pfizer scientists to lower blood pressure to treat hypertension or angina pectoris. However it is a popular remedy for erectile dysfunction. During early trials it was found to do little to prevent angina, however it induced penile erection in men. It is used for recreational use, but only benefits if you suffer from erectile dysfunction, however studies so a notably significant placebo effect. The benefits are considered positive by its users. Sexual stimulation is required to create an erection, it does not facilitate sexual arousal on its own.
This diamond or oval-like shaped pill should not be used if individuals have kidney disease. People with HIV who currently use protease inhibitors should consult with their health care providers prior to taking Viagra, there is a possibility of increased risk and side effects. If users take alpha-blockers, they should wait at least 4 hours between taking Viagra, before and after to prevent critically low blood pressure. Some individuals should not take Viagra including: men who are recommended to refrain from sexual intercourse per cardiovascular health risks, people with liver impairments, people who have kidney disease, people with low blood pressure, people who have recently experienced heart attack and/ or stroke, people with liver impairments, or those with family history of degenerative retinal disorders. Clinical trial side effects include: headaches, nasal congestion, photophobia (sensitivity to light), dyspepsia (stomach indigestion), or impaired vision. Less common side effects include: some users have reported cyanopsia (where their appearance looks somewhat blue), rarely it can cause damage to the optic nerve. There are other possible side effects including: priapism, a long-lasting and painful erection (rarely), heart attack, increased intraocular pressure, ventricular arrhythmias, or sudden hearing loss. Dosage for Viagra is different depending on usage. For erectile dysfunction the pill comes in 25, 50, or 100 milligram dosages. Only one (maximum) pill should be taken within a 24 hour period. And should be taken 30 to 60 minutes before full sexual results will be able to take effect. For dosage used for hypertension Viagra comes in a single dose size of 20 milligrams to be taken three times daily (white pill). Users should not take more than the prescribed amount. Serious overdose side effects can occur including: vomiting, blurred vision, swelling of the optic nerve (papilledema), optic neuropathy (damage to the optic nerve), tachycardia (increased heart rate), prolonged priapism, blindness, rhabdomyolysis (break down of muscles), or diarrhea. Death is rare from Viagra, however it is possible. If someone experiences these symptoms they are urged to contact their doctor or contact their Poison Control Center immediately.
Viagra does not require a prescription to purchase it online in South africa, and there are many retailers available online to purchase from. prices range from $0.27 to $9.36 per pill, many providers offering free delivery, samples for erectile dysfunction, and 10% off coupons depending on order size. Competing brands include Levitra and Cialis. For more information contact your health care professional directly or contact www.viagra.com.