Viagra is a drug that helps men with erectile disfunction to get an erection when he becomes sexually aroused. Viagra has no known benefits for female sexual health. It is taken orally. In Australia, it is considered a S4 drug which means it is offered through prescription only. 12 tablets cost about $29.99 in Australia. It works by stopping an enzyme which degrades cGMP. cGMP regulates blood flow to the penis, and by inhibiting its degradation, Viagra increases blood flow to that region. This results in an erection. Erectile disfunction, or ED is very common in middle aged and older men. Men with ED may suffer from depression and lower self confidence. Viagra can help ease these issues. It takes about 30 to 60 minutes for Viagra to enter the bloodstream and shouldn’t be taken between 1-2 hours before sexual activity. Viagra’s efficiency and effectiveness are affected by food eaten before or after taking it. Taking it with high-fat meals decreases its efficiency. Furthermore, grapefruit juice should not be consumed in conjunction with Viagra as it may cause increased side effects to occur.
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Viagra is sold through Pfizer, an international pharmaceutical company. It was originally tested to treat heart disease. However, clinical trials revealed that it caused erections in human males. Viagra currently exceeds 1 billion dollars in sales yearly. Viagra has several well known nicknames. It has been called vitamin V, blue diamond, and the blue pill. The last two of these names reference the pill’s shape and color. Viagra is a well known product around the world, resulting in many herbal “aphrodisiacs” labeling themselves as the “herbal Viagra”. Competitors of Viagra include Cialis and Levitra. These drugs were largely responsible for Viagra’s decreasing market share. While in 2000 Viagra has taken up 92% of ED related sales globally, by 2007 that number had fallen to about 50% of the market share. Due to Viagra’s popularity, many generic pills have flooded the market. Around 80% of sites claiming to sell Viagra were selling generics. In Australia Viagra can only be obtained through getting a prescription, so one should be wary of sites claiming to sell Viagra that don’t ask for a prescription.
There are multiple possible side effects of using Viagra. These include flushing, headache, an upset stomach, back pain, nausea, muscle pain, changes in vision, blurred vision, runny nose, stuffy nose, priapism, vision loss in one or both eyes, hearing loss, rashes, and dizziness. Furthermore, other very rare side effects may occur including heart attack, irregular heartbeat, stroke, and death. You shouldn’t take Viagra if you are taking any nitrate based medications or guanylate cyclase stimulators as this might result in a dangerous drop in blood pressure. Viagra also shouldn’t be taken if you are allergic to sildenafil or any other ingredients in Viagra. Other medications that shouldn’t be taken in conjunction with Viagra include alpha-blockers, HIV protease inhibitors, some oral antifungal medicines, some antibiotics, medications that treat high blood pressure, and other medications that treat ED. You should always consult with your physician before taking Viagra as it is unsafe not to do so.