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Sildenafil (brand name Viagra) is a medicine that include stimulates erection in men. It was developed by the manufacturer, Pfizer.
Sudden hear loss is a possible side effect of Viagra and other potency enhancing drugs such as vardenafil, tadalafil or avanafil. Or the use of erection pills actually causes hearing loss should be investigated further.
A serious side effect is the doubling of the probability of melanoma, a deadly form of skin cancer. Because sildenafil mostly used by men, came to light this side effect in the increase of the male / female distribution of melanoma.
Viagra is indicated for the treatment of erectile dysfunction in men. Viagra is a phosphodiesterase type 5 (PDE5) inhibitor. It works by helping to increase blood flow into the penis during sexual stimulation. This helps you to achieve and maintain an erection.
Use Viagra as directed by your doctor.
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 4 hours to 0.5 hour before sexual activity. Based on effectiveness and toleration, the dose may be increased to a maximum recommended dose of 100 mg or decreased to 25 mg. The maximum recommended dosing frequency is once per day.
Ask your health care provider any questions you may have about how to use Viagra.
Store Viagra at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Viagra out of the reach of children and away from pets.
Active Ingredient: Sildenafil citrate.
Inactive Ingredients: Microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake.
Medication with nitrates is contraindicated due to potentiation of the hypotensive effect. Concomitant use with potent CYP3A4 inhibitors such as ritonavir (HIV protease inhibitor) and itraconazole is contraindicated in the indication pulmonary hypertension associated with an exceptional increase in sildenafilplasmaspiegel, which can last long; the indication erectile dysfunction is not recommended combination with ritonavir.
Combination with strong CYP3A4 inducers such as carbamazepine, phenytoin, phenobarbital, St. John's wort and rifampicin may reduce the effectiveness by accelerating the excretion of sildenafil.
Medication with antihypertensive drugs can give an additional blood pressure reduction. Because of insufficient data, caution is advised when combining with other drugs for pulmonary arterial hypertension. Gained from the combination of sildenafil + epoprostenol has more experience. Bosentan is a moderate CYP3A4 and CYP2C9 inducer and can thereby reduce exposure to sildenafil.