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Viagra is prescribed for the treatment of erectile dysfunction of either organic (medical condition) or psychogenic (psychological) cause and for pulmonary arterial hypertension.
Viagra is an oral drug for male impotence, also known as erectile dysfunction (ED). It works by dilating blood vessels in the penis, allowing the inflow of blood needed for an erection.
Viagra is prescribed to treat male sexual function problems (erection problems).
Viagra is known to:
- Boost sexual performance;
- Harder erections;
- Increase sex drive;
- Increase stamina;
- Provide fuller;
- Quicker recharges;
How to take Viagra
Viagra is taken by mouth as needed 45 minutes before sexual activity. Depending on how and when the drug works for you, an interval of one-half hour to as much as 4 hours may prove ideal. Before taking Viagra, do not eat a very large or high fat meal as it will impair the effectiveness of the medication. Take only as directed, usually half of a 100mg pill once daily as needed. Viagra works along with sexual stimulation to help achieve an erection.
Viagra side effects
- Stomach upset;
- Nasal stuffiness;
If these effects persist or worsen, notify your doctor promptly.
Before using Viagra, tell your doctor your medical history, including:
- Stroke or severe high or low blood pressure;
- Sickle cell anemia;
- Peyronie's disease;
- Kidney or liver disease;
- History of painful/prolonged erection (priapism);
- Heart diseases;
- Eye problems (retina diseases);
- Blood system cancers (such as leukemia or myeloma);
- Bleeding disorders or active stomach ulcers;
- Any penis conditions such as fibrosis/scarring;
- Any allergies (especially drug allergies);
Limit alcohol intake, as it may aggravate side effects of Viagra.
The elderly may be more sensitive to the side effects of Viagra, therefore caution is advised in this age group.
To avoid dizziness and lightheadedness when rising from a seated or lying position, get up slowly.
Viagra drug interactions
Tell your doctor of all nonprescription and prescription medication you may use, especially any nitrate medications (nitroglycerin, isosorbide dinitrate), nitroprusside (any "nitric oxide donor" medicines), cimetidine, erythromycin, azole antifungals (itraconazole, ketoconazole), mibefradil, rifamycins (rifampin) or high blood pressure medicines.
Store at room temperature between 59 and 86 degrees F (15-30 degrees C) away from light and moisture. Keep this and all medications out of the reach of children.
Tablets: 25 milligrams,
Tablets: 50 milligrams,
Tablets: 100 milligrams.
Viagra is rapidly absorbed. Maximum observed plasma concentrations are reached within 30 to 120 minutes (median 60 minutes) of oral dosing in the fasted state. When Viagra is taken with a high fat meal, the rate of absorption is reduced, with an average delay in the time to maximal concentration of 1 hour.
Doses range from 25 mg to 100 mg, depending on the drug's effect. The usual dose is 50 mg. If you are over 65, have liver or kidney problems, or are taking erythromycin, ketoconazole, itraconazole, ritonavir, or saquinavir a dose of 25 mg may be sufficient. Your doctor will adjust the dosage if the drug is not working properly for you.
Take Viagra only before sexual activity. The manufacturer recommends a maximum of 1 dose per day (1 dose every 2 days for those taking ritonavir).
To avoid low blood pressure, do not take the 50-mg or 100-mg dose of Viagra within 4 hours of taking an alpha-blocking drug such as Cardura.