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DRUG CLASS AND MECHANISM: Viagra (sildenafil) is an oral drug that is used for treating impotence (or erectile disfunction, ED, the inability to attain or maintain a penile erection). It is in a class of drugs called phosphodiesterase inhibitors (PDE-5 inhibitors) that also includes Some medicines may be affected by CIALIS or may affect how it works. These include: cialis 10mg Treatment of signs and symptoms of benign prostatic hyperplasia (BPH); daily use also indicated for treatment of patients with both BPH and erectile dysfunction Creatinine clearance 30 to 50 mL/min: A starting dose of 2.5 mg is recommended. An increase to 5 mg may be considered based on individual response.

HeadacheOther pharmacy viagra In the 1990s, Pfizer began development on a drug called UK-92480, intended as a treatment for angina and high blood pressure. The drug worked by inhibiting an enzyme that causes the inside of blood vessels to contract. The theory was, if this process was disrupted, then the cells would relax, improving blood flow and relieving blood pressure. Cool cat July 19, 2015?It can occur regardless of sexual activity, the situation or the sexual partner

Cacchioni, who has also written a book on the issue - "Big Pharma, Women, and the Labour of Love," out in August - is not convinced the new data will be enough to swing an FDA approval, despite the intense media attention and public interest the case has received. changes in color vision cialis daily use side effects

You should not eat food or take medications that contain nitrates such as processed meats or nitroglycerin.Concomitant use of nitrates in any form is contraindicated [see Contraindications (4.1)].

where to buy viagra ? erythromycinHow fast does it work? Varies by person, but users are recommended to take the pill at least 30 minutes to an hour prior to sex. Levitra label says to take it 60 minutes before sexual activity, but studies show it can work faster. May be more likely to work the first time.

Cialis may be taken without regard to food.How should I store Viagra?Tadalafil is a selective, reversible inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). When sexual stimulation causes the local release of nitric oxide, inhibition of PDE5 by tadalafil produces increased levels of cGMP in the corpus cavernosum. This results in smooth muscle relaxation and inflow of blood into the penile tissues, thereby producing an erection. Tadalafil has no effect in the treatment of erectile dysfunction in the absence of sexual stimulation.

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