Erectile dysfunction (ED) is actually defined as continuous difficulty in achieving and sustaining a firm erection sufficient to have sexual activities. The causes of erectile dysfunction are generally medical but could also be psychological. Usually, the organic causes of erectile problems are the outcome of underlying medical ailment affecting the nerves or blood vessels supplying the genital. Doctors around the globe have said that excessive smoking, drinking, use of recreational drugs and even over dependence on prescription medicines can all cause erectile dysfunction in men. However, there are medicines that can handle erectile problems satisfactorily, and Viagra is among those medications. After talking to a professional physician about your sexual problems, you can buy viagra online without any difficulties.
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What is Viagra and how is it used?
Viagra is a prescription medicine used to treat the symptoms of erectile dysfunction. Viagra may be used alone or with other medications.
Viagra belongs to a class of drugs called PAH, PDE-5 Inhibitors, Phosphodiesterase-5 Enzyme Inhibitors.
It is not known if Viagra is safe and effective in children.
What are the possible side effects of Viagra?
Viagra may cause serious side effects including:
chest pain or pressure,
pain spreading to your jaw or shoulder,
sudden vision loss,
an erection that is painful or lasts longer than 4 hours,
severe shortness of breath,
cough with foamy mucus,
ringing in your ears,
sudden hearing loss,
swelling in your hands, ankles, or feet,
seizure (convulsions), and
Get medical help right away, if you have any of the symptoms listed above.
The most common side effects of Viagra include:
flushing (warmth, redness, or tingly feeling),
changes in the color of your vision,
sleep problems (insomnia),
runny or stuffy nose,
back pain, and
Tell the doctor if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of Viagra. For more information, ask your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
VIAGRA (sildenafil citrate), an oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5).
Sildenafil citrate is designated chemically as 1-[[3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate and has the following structural formula:
Sildenafil citrate is a white to off-white crystalline powder with a solubility of 3.5 mg/mL in water and a molecular weight of 666.7.
VIAGRA is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg, and 100 mg of sildenafil for oral administration. In addition to the active ingredient, sildenafil citrate, each tablet contains the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake.
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
VIAGRA was administered to over 3700 patients (aged 19-87 years) during pre-marketing clinical trials worldwide. Over 550 patients were treated for longer than one year.
In placebo-controlled clinical studies, the discontinuation rate due to adverse reactions for VIAGRA (2.5%) was not significantly different from placebo (2.3%).
In fixed-dose studies, the incidence of some adverse reactions increased with dose. The type of adverse reactions in flexible-dose studies, which reflect the recommended dosage regimen, was similar to that for fixed-dose studies. At doses above the recommended dose range, adverse reactions were similar to those detailed in Table 1 below but generally were reported more frequently.
Do not consume Viagra if you also take medicines known as nitrates, which are often recommended for chest pain or even guanylate cyclase stimulator like Adempas for pulmonary hypertension. The blood pressure can drop or decrease to a very unsafe level. Moreover, if you are allergic or sensitive to sildenafil, which is an active ingredient present in the drug, you should not take Viagra. It is important for you to talk about your health with a doctor to make sure you are sufficiently healthy for sexual activities. While engaging in any sexual activity, if you experience nausea, vomiting, dizziness or chest pain, get immediate medical help.
If you experience an erection, which lasts for more than four hours (priapism), seek medical help straightaway. If priapism is not treated immediately, it can damage the penis permanently. Furthermore, if you experience unexpected vision loss in both the eyes or one eye, it could be an indication of a severe eye problem known as non-arteritic anterior ischemic neuropathy. Do not take Viagra if you experience sudden vision loss. In addition, some people might experience dizziness or tinnitus, which is ringing in ears. If they face these symptoms, discontinuing Viagra is the best option.
Before taking the drug, it is necessary for you to inform your doctor if you had heart problems, high blood pressure, low blood pressure, stroke, pulmonary hypertension, sickle cell anemia, leukemia, chest pain, angina, irregular heartbeat, kidney dialysis, liver problem, stomach ulcers, bleeding problems or heart surgery within the past six months. Nevertheless, the benefits of Viagra are far more than the detrimental effects, therefore consult with a proper doctor first, and then buy Viagra Online USA without any hesitation.