?tell your doctor and pharmacist if you are allergic to sildenafil, any other medications, or any of the ingredients in sildenafil products. Ask your pharmacist for a list of the ingredients. levitra dosage 40 mg If you have ever had an allergic reaction to a medicine.
Take any medicines called “nitrates” (often used to control chest pain, also known as angina).
Ingredient Name Basis of Strength Strength viagra herbal AdcircaNC 27709If you overdose on Levitra, seek medical attention right away.
25 mg - blue, rounded-diamond shaped tablets marked VGR 25 on one side and PFIZER on the other. No dosage adjustment is warranted solely on basis of age; however, greater sensitivity to medications in some older individuals should be considered daily cialis review There have been postmarketing reports of bleeding events in patients who have taken Viagra. A causal relationship between Viagra and these events has not been established. In humans, Viagra has no effect on bleeding time when taken alone or with aspirin. However, in vitro studies with human platelets indicate that sildenafil potentiates the antiaggregatory effect of sodium nitroprusside (a nitric oxide donor). In addition, the combination of heparin and Viagra had an additive effect on bleeding time in the anesthetized rabbit, but this interaction has not been studied in humans.
Administration of Viagra with nitric oxide donors such as organic nitrates or organic nitrites in any form is contraindicated. Consistent with its known effects on the nitric oxide/cGMP pathway, Viagra was shown to potentiate the hypotensive effects of nitrates [see Dosage and Administration (2.3), Contraindications (4.1), Clinical Pharmacology (12.2)].Ophthalmologic — blurred vision, changes in color vision, conjunctivitis (including conjunctival hyperemia), eye pain, lacrimation increase, swelling of eyelids
Long-term safety information is not available on the concomitant administration of vardenafil with HIV protease inhibitors. what does viagra cost Co-administration of erythromycin, a moderate CYP3A4 inhibitor, resulted in a 160% and 182% increases in sildenafil Cmax and AUC, respectively. Co-administration of saquinavir, a strong CYP3A4 inhibitor, resulted in 140% and 210% increases in sildenafil Cmax and AUC, respectively. Stronger CYP3A4 inhibitors such as ketoconazole or itraconazole could be expected to have greater effects than seen with saquinavir. A starting dose of 25 mg of Viagra should be considered in patients taking erythromycin or strong CYP3A4 inhibitors (such as saquinavir, ketoconazole, itraconazole) [see Dosage and Administration (2.4), Clinical Pharmacology (12.3)].Inform patients that the recommended starting dose of Levitra is 10 mg. The dose may be increased to a maximum recommended dose of 20 mg or decreased to 5 mg based on efficacy and tolerability. The maximum recommended dosing frequency is one tablet per day.
Hematologic18. Khandheria BK "Erection, erectile dysfunction: what has heart got to do with it?" Herz 28 (2003): 275-6breast enlargement
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