Sildenafil citrate, widely known as Viagra among lots of social circles, was created in 1989 by British Pfizer scientists – Peter Dunn and Albert Wood as a treatment for high blood pressure and angina – a chest pain. However, during the trials, the drug provided little hope for treatment of the illnesses, but volunteers for the trials reported increased erections within several days of taking the dosage. After further investigation, Pfizer patented the drug and it was approved by the FDA for use against erectile dysfunction.
Working: Viagra (Sildenafil citrate )works by stimulating the relaxation of muscles in the walls of blood vessels and thus increases blood flow to most parts of the body, especially the pubic areas. When blood flow is high around this area, the penis’ erectile muscles become stiff as a result of filling with blood. This then triggers sex pheromones’ release in the brain causing increased sexual urge and increased erectile stiffness.
Effects: Viagra is administered orally. When taken directly by mouth, it results in erections in 27 minutes (ranging from 12 to 70 minutes), while when taken from under the tongue, results in onset of erections in 15 minutes. Viagra causes significant erections that last for an average of two to three hours though longer times have been reported such as five hours. In addition, Viagra causes the individual to have a shorter postejaculatory refractory time (which is basically the time it takes an individual to have another erection after they have already orgasmed ).For faster results, Viagra should not be taken after meals, and especially not after high fat content meals, since this delays Viagra’s action time by at least an hour. Viagra Interactions:As a precautionary measure, you should let your doctor be aware of any other drugs you are using, whether prescription drugs or not, as they may contain ingredients that might interact with Sildenafil resulting into serious health complications. Viagra should not be taken together with grape juice. Grapefruit products are known to hinder breakdown of Sildenafil hence causing massive over absorption of the drug into the body and this can reach toxic levels. Alcohol intensifies Viagra’s side effects, so it is wise to cut on alcohol intake. Additionally, alcohol can cause debilitating effects on erections. Individuals taking nitrate drugs such as Nitroglycerin, should at all costs avoid taking viagra as Sildenafil interaction with these drugs can result into sudden dangerous drops in blood pressure.
Dosage: Viagra is available in 25 mg, 50 mg and 100 mg doses. Though the recommended dose is 25 mg, the dose can be adjusted upwards upto 100 mg maximum dose.
Side Effects: As with most drugs, Viagra may cause some side effects which might include; headaches, abnormal vision, dizziness, nausea, stomach upsets, indigestion, nasal congestion, diarrhea, back pain, muscle pain or tenderness, rash, flushing in the face, neck or chest. If you happen to witness any of the following symptoms, then you need to seek medical attention immediately; change or loss of vision, lightheadedness, shortness of breath, ringing in ears or hearing loss, chest pain or irregular heartbeat, swelling in the hands. More importantly, Viagra is used when needed so there is no need to overdose. Any overdose case should be taken very seriously.
Hello, welcome. I am Peter Doherty, Australian physician from Melbourne. My goal is to provide you important information about Viagra and its substitutes.