It turned out that the XX century became the age of technological, informational and other breakouts. Important discoveries have been made in the various fields of science, and pharmacy wasn’t an exception. The scientists around the world look for ways to cure terrible diseases, derive the formula of self-healing sources of energy, travel to Venus and Mars, etc. But while these experiments continue without results, the specialists in pharmacy created a real “bomb” called Viagra. This drug became one of the most famous around the world.
The drug is relatively young, but this fact didn’t prevent it from becoming very popular. Viagra started its way to success in the late 1980s. The appearance of Viagra caused a stir. Thus, in the first month of sale, the doctors have given the patients about 246 000 prescriptions for Viagra. 1998 became a monumental year for “Pfizer” (the company producing Viagra) – the product gained its first $1 billion.
How was it invented?
With the greatest respect, cheap Viagra can’t be considered a 100% guarantee of potency restoration. But at the same time, 80% of men have experienced the joy of sex, which were long forgotten and unavailable. We can’t argue that. The main active substance of Viagra is Sildenafil. It looks like a white powder that can be easily dissolved in water.
It is interesting that initially Sildenafil was intended for the treatment of coronary heart disease and angina (it had to increase the blood circulation in myocardium). However, Sildenafil didn’t affect this kind of blood flow.
And then, as a result of experience or by accident, the specialists noticed that this substance improved the blood flow to the pelvic organs and penis. And since then, the drug started to serve the healthy potency.
The composition of Viagra
Sildenafil belongs to the group of PDE-5 inhibitors. It is responsible for the breakdown of cGMP in the cavernous bodies of penis, and can actively increase the relaxing effect of the nitrogen oxide on the smooth muscles of the cavernous body and increase the blood flow to the male genitals. The activation of chain NО- cGMP, which happens during the sexual arousal, inhibits PDE-5 and increases cGMP in the cavernous body.
The action of Viagra sildenafil citrate
Sildenafil comes in the form of pills (25, 50 or 100 mg each). If you buy Viagra online increases the blood circulation in the male genitals and triggers natural erection, which goes away after sex. Viagra can be effective only with sexual stimulation. The maximum recommended dose is 100 mg of cheap Viagra a day. The use of this drug may cause some side effects, such as headache, vertigo, nasal congestion and vision impairment. However, they are transient and not dangerous to the human health. Viagra sildenafil citrate can’t be used together with nitric oxide donators and nitrites of any form.
What drugs are incompatible with Viagra?
Never combine this drug with any nitrites, used for the treatment of angina. These are such drugs as glyceril trinitrate, nitroglycerin, isosorbide dinitrate and sodium nitroprusside. Nitrites also include light drugs, also called “poppers”. The combination of generic Viagra with nitrites leads to the life-threatening drop in blood pressure. In this case, the person feels weakness and vertigo.
The use of Viagra can be dangerous in the following cases:
Peyronie’s disease (a curvature of penis);
priapism or diseases that can lead to it (multiple myeloma, leukemia and sickle cell anaemia);
if sex is contraindicated for some reasons (recent heart attack or a stroke in the last 6 months).
Anyway, before you order Viagra without prescription and starting the treatment with generic Viagra, you should learn the contraindications. It is better to consult the doctor, as generic Viagra is still a drug. If you don’t want to go to the doctors, you should carefully read the drug instructions.