As a generic name forsildenafil citrate, Viagra is a tablet that is taken orally as a therapy for erectile dysfunction. With sildenafil as a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5), Viagra is a citrate salt of sildenafil.Increasing blood flow to particular body areas, Viagra also relaxes the muscles.
Under its chemical name 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, sildenafil citrate is basically a white to off-white crystalline powder and is solublein water to the strength of 3.5 mg/ml.Viagra is normally recommended in a starting dosage of 25mg.
Side effects of Viagra may be exhibited as:
Ringing in the ears
Flushing of the face
Sudden hearing loss
Sudden loss of vision
Color blindness especially with green and blue shades or hues
Pain in chest, jaw or left arm
Precautions to adhere to while taking sildenafil citrate (Viagra):
It is very necessary for the patient or the user to consult with the doctor before taking Viagra as there is a risk of acquiring NAION or Non-arteritic anterior ischemic optic neuropathy as there is a loss of blood flow to the optic nerve causing sudden loss of vision. The patient must inform the doctor if there any blood pressure or heart problems, high cholesterol, and diabetes or if the person is a smoker.Patients taking sildenafil in other brands such as Revatiomust not take Viagra at the same time. If the patient is allergic to Sildenafil (Viagra) or ingredients contained in this drug, the doctor must be informed. Viagra should not be prescribed for people who are taking medications containing nitrates or other recreational medications as it causes a sudden drop in blood pressure. If the person is suffering from leukemia, sickle cell anemia or multiple myeloma and/or hemophilia, the doctor must be told of about the medical history and the condition of the patient and if there has been any occurrence of heart disease. If the patient has stomach ulcers, retinitis pigmentosa, a deformity of the penis, liver or kidney problems, low or high blood pressure, the physician must be informed as soon as possible. The patient must also tell the doctor if he/she has been advised against having intercourse for health reasons. If the person is having a prolonged erection or priapism, the doctor must be contacted immediately. Pregnant or lactating women must not take Viagra (sildenafil). Alcohol, grapefruit or grapefruit juice must be avoided while taking Viagra. Patients taking alprostadil or yohimbine or other drugs for impotence must consult with the doctor. Any reaction to Viagra must be informed immediately to the physician and yhe medication should be stopped until the patient shows normal signs.
Viagra (sildenafil) is used to treat impotence or erectile dysfunction and also to increase blood flow besides relaxing the muscles.
Viagra (sildenafil) is taken at a starting dose of 25mg and increased or decreased according to the efficacy, side effects and/or needs.