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Viagra can be taken with or without food. If you take Viagra after a high fat meal (such as a cheeseburger and french fries), Viagra may take a little longer to start working 50mg viagra Postmarketing Experience

An in-depth study has been done to further gain facts about the effects of Viagra. Researchers did a survey among men who take Viagra regarding their ability to achieve erections and maintain that even after penetration. Additional questions were asked about satisfaction with intercourse, desire, orgasms and overall sexual satisfaction.Sudden Hearing Loss

Viagra (50 mg) did not potentiate the increase in bleeding time caused by aspirin (150 mg).Cialis is a prescription drug, which means that you have to be subjected to a thorough health condition assessment before your healthcare provider can conclude that you qualify for tadalafil therapy. The main factors that will be considered by your GP, urologist or andrologist are: kidney and liver functions, heart condition, whether or not you had the history of stroke within the past 6 months, hereditary diseases like Peyronie’s disease (penis deformity) or retinitis pigmentosa (eye condition), dystonia, allergies, substance abuse, stomach ulcer, and then some. viagra ingredients VIAGRA contains sildenafil, which is the same medicine found Take any medicines called “nitrates” (See “What important information should you know about LEVITRA?”). Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm. Stabilized on alpha-blocker therapy and taking moderate-to-strong CYP3A4 inhibitor: 2.5 mg/day PO initially

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In vitro studies have shown that the effect of tadalafil is more potent on PDE5 than on other phosphodiesterases. These studies have shown that tadalafil is >10,000-fold more potent for PDE5 than for PDE1, PDE2, PDE4, and PDE7 enzymes, which are found in the heart, brain, blood vessels, liver, leukocytes, skeletal muscle, and other organs. Tadalafil is >10,000-fold more potent for PDE5 than for PDE3, an enzyme found in the heart and blood vessels. Additionally, tadalafil is 700-fold more potent for PDE5 than for PDE6, which is found in the retina and is responsible for phototransduction. Tadalafil is >9,000-fold more potent for PDE5 than for PDE8, PDE9, and PDE10. Tadalafil is 14-fold more potent for PDE5 than for PDE11A1 and 40-fold more potent for PDE5 than for PDE11A4, two of the four known forms of PDE11. PDE11 is an enzyme found in human prostate, testes, skeletal muscle and in other tissues (e.g., adrenal cortex). In vitro, tadalafil inhibits human recombinant PDE11A1 and, to a lesser degree, PDE11A4 activities at concentrations within the therapeutic range. The physiological role and clinical consequence of PDE11 inhibition in humans have not been defined.