Buy Viagra No Prescription

Sildenafil citrate is a medical drug used to treat hypertension of the pulmonary artery and enhance penile erection. The drug is sold under several brand names such as Viagra and Revatio. Revatio is to treat pulmonary arterial hypertension while Viagra is used to treat erectile dysfunction. Viagra functions by increasing concentrations of cGMP, the enzyme that regulates blood flow to the penis. Athletes use Viagra to enhance their performance, believing that Viagra opens their blood vessels, which leads to an increase blood flow to the muscles. Viagra is also used to accelerate recovery from jet lag.

How To Use Viagra: Viagra is produced in pills of 25, 50 or 100 milligrams. The optimal dose is 25 to 100 mg. Take the pill before sexual intercourse, between 30 minutes to four hours in advance, no more than once per day.


How Viagra Works: Viagra prevents the depletion of enzyme cGMP by enzyme PDE5. Nitric oxide present in the penis’s corpus cavernosum combines with guanylate cyclase receptors to produce more cGMP. High amounts of cGMP cause the penis muscles to relax and the helicine arteries to open wider, allowing more blood flow into the spongy tissues of the penis and inducing erection. The molecular structure of Buy Viagra US resembles that of cGMP. Therefore, it competes with cGMP as a binding agent of PDE5. PDE5 reacts with Viagra and leaves cGMP to perform its functions of enabling more blood to flow to the penis and causing an erection. Buy Viagra is metabolized by enzymes from the liver and excreted by both the kidneys and liver. Do not take it after eating a fat-rich meal, as fat reduces its absorption. Fat causes the time taken by Viagra to reach its highest plasma concentration to increase by about one hour and highest concentration to decrease by about 30 percent.

People Who Should Not Use Viagra: Do not use Viagra if you are on medication that uses protease inhibitors, which is used to treat HIV. It inhibits the metabolism of Buy Viagra and causes its plasma levels to increase. This increases the incidence and seriousness of side effects. Simultaneous use of Viagra US and an alpha blocker can cause low blood pressure. However, the effect does not occur if one is taken at least four hours after the other. Do not take Viagra Without Prescription if you have severe renal function impairment, severe hepatic impairment, low blood pressure, recent heart attack or stroke, inherited degenerative retinal disorders and/or have been advised not to engage in sexual intercourse due to cardiovascular risk factors. You should also avoid Viagra if you are using amyl nitrite, sodium nitroprusside, organic nitrates and nitrites and/or nitric oxide donors.

Viagra Side Effects: The most prevalent side effects of Buy Viagra Without Prescription include impaired vision, nasal congestion, dyspepsia, flushing, headaches, blurred vision, and photophobia. Some users complain that everything they see is tinted blue. Others complain of loss of peripheral vision and blurriness. In rare cases, it can cause vision impairment. Viagra No Prescription is also thought to cause nonarteritic anterior ischemic optic neuropathy. Serious side effects include sudden hearing loss, increased intraocular pressure, stroke, ventricular arrhythmias, myocardial infarction (heart attack), severe hypotension, and priapism. The pills carry a warning label about the risk of hearing loss after use.

Inappropriate Use: Even though athletes who use Viagra Without Prescription believe that it enhances their performance, this has not been scientifically proven. Those who use illegal drugs also use Viagra No Prescription in the belief that it neutralizes the effects of the drugs. It is mixed with opiates, methylene dioxy methamphetamine and or other stimulants in the belief that this would prevent the drugs’ common erectile dysfunction side effect. Such a mix is known as trail mix, rocking and rolling, or sextans. It is very dangerous to mix Buy Viagra No Prescription with amylnitrite and is potentially fatal.