What Dose Do and Where to Buy Viagra Online
For many men affected by erectile dysfunction, medications like Viagra allow for a satisfying and fulfilling sex life that isn’t possible without medication. However, Viagra’s effects are primarily physical, meaning it won’t affect the way you feel during sex or cause the sensation of sex to become more intense
Description
DESCRIPTION
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-methyl piperazine citrate and has the following structural formula:
VIAGRA® (sildenafil citrate) Structural Formula Illustration
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.
Dosage Information
For most patients, the recommended dose is 50 mg taken, as needed, approximately 1 hour before sexual activity. However, VIAGRA may be taken anywhere from 30 minutes to 4 hours before sexual activity. The maximum recommended dosing frequency is once per day.
Based on effectiveness and toleration, the dose may be increased to a maximum recommended dose of 100 mg or decreased to 25 mg
Before you take VIAGRA, tell your healthcare provider if you have:
- have had heart surgery within the last 6 months
- have pulmonary hypertension
- have had a stroke
- have low blood pressure or high blood pressure that is not controlled
- have a deformed penis shape
- have had an erection that lasted for more than 4 hours
- have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia
- have retinitis pigmentosa, a rare genetic (runs in families) eye disease
- have ever had severe vision loss, including an eye problem called NAION
- have bleeding problems
- have or have had stomach ulcers
- have liver problems
What are the risks of taking Viagra?
Viagra can cause some serious side effects. These can include an erection that will not go away (priapism), sudden vision loss in one or both eyes, and sudden hearing decrease or hearing loss. Some men have also experienced a heart attack, stroke, irregular heartbeats, and even death after taking Viagra.