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4.8 Undesirable effectsThe dangers of Viagra are becoming increasingly glaring: as of June 9, the FDA received 16 reports of death among men who took the drug, and though no direct evidence links the fatalities with the pill, at least seven of these (mostly elderly) men died during or after intercourse. Oral contraceptives, on the other hand, are among the safest and most effective of any existing prescriptive medications. cialis women If you are taking any form of nitrate or are unsure talk to your doctor. If you have ever had bone marrow cancer or leukaemia.

Carcinogenesis, Mutagenesis, Impairment of Fertility

Based upon measurements of sildenafil in semen of healthy volunteers 90 minutes after dosing, less than 0.001% of the administered dose may appear in the semen of patients. levitra pharmacy Painful erectionCan Other Medicines Affect Cialis?Co-administration of ritonavir, a strong CYP3A4 inhibitor, greatly increased the systemic exposure of sildenafil (11-fold increase in AUC). It is therefore recommended not to exceed a maximum single dose of 25 mg of Viagra in a 48 hour period [see Dosage and Administration (2.4), Warnings and Precautions (5.6), Clinical Pharmacology (12.3)].

Hypersensitivity Reactions have had an erection that lasted for more than 4 hours viagra history Special senses:

Significant improvements in the EF Domain were shown in this study (EF Domain scores of 17 on 10 mg Levitra and 19 on 20 mg Levitra compared to 13 on placebo; p <0.0001).Since both Viagra and Levitra have moderate vasodilatory and hypotensive effects, they should not be given in the presence of marked arterial or orthostatic hypotension, and should only be administered with caution in aortic stenosis or hypertrophic obstructive cardiomyopathy.

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