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Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Revatio) is used to affix the achievement to exercise in adults bearing in mind pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the lungs, causing terseness of breath, dizziness, and tiredness). kids should not usually acknowledge sildenafil, but in some cases, a doctor may believe to be that buy sildenafil citrate online usa (Revatio) is the best medication to treat a child’s condition. Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Sildenafil treats PAH by relaxing the blood vessels in the lungs to permit blood to flow easily.If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or addition sexual desire. Sildenafil does not prevent pregnancy or the enhancement of sexually transmitted diseases such as human immunodeficiency virus (HIV).

Sildenafil comes as a tablet and postponement (liquid; Revatio only) to assume by mouth.If you are taking sildenafil to treat erectile dysfunction, follow your doctor’s directions and the guidelines in this paragraph. acknowledge sildenafil as needed in the past sexual activity. The best times to acknowledge sildenafil is virtually 1 hour past sexual activity, but you can recognize the medication any era from 4 hours to 30 minutes back sexual activity. Sildenafil usually should not be taken more than subsequent to every 24 hours. If you have clear health conditions or are taking positive medications, your doctor may say you to tolerate sildenafil less often. You can acknowledge sildenafil in the manner of or without food. However, if you say yes sildenafil bearing in mind a high-fat meal, it will allow longer for the medication to begin to work.If you are taking sildenafil to treat PAH, follow your doctor’s directions and the guidelines in this paragraph. You will probably assume sildenafil three time a daylight taking into consideration or without food. believe sildenafil at something like the similar times every day, and freshen your doses approximately 4 to 6 hours apart.

tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or scheme to take. Be certain to insinuation any of the following: alpha blockers such as alfuzosin (Uroxatral), doxazosin (Cardura), prazosin (Minipress), tamsulosin (Flomax, in Jalyn), and terazosin; amlodipine (Norvasc, in Amturnide, in Tekamlo); clear antifungals such as itraconazole (Onmel, Sporanox) and ketoconazole (Nizoral); anticoagulants (‘blood thinners’) such as warfarin (Coumadin, Jantoven); determined barbiturates such as butalbital (in Butapap, in Fioricet, in Fiorinal, others) and secobarbital (Seconal); beta blockers such as atenolol (Tenormin, in Tenoretic), labetalol (Trandate), metoprolol (Lopressor, Toprol XL, in Dutoprol), nadolol (Corgard, in Corzide), and propranolol (Hemangeol, Inderal LA, InnoPran); bosentan (Tracleer); cimetidine ; efavirenz (Sustiva, in Atripla); erythromycin (E.E.S., E-Mycin, Erythrocin); HIV protease inhibitors including amprenavir (Agenerase; no longer user-friendly in the U.S.), atazanavir (Reyataz, in Evotaz), darunavir (Prezista, in Prezcobix), fosamprenavir (Lexiva), indinavir (Crixivan), lopinavir (in Kaletra), nelfinavir (Viracept), ritonavir (Norvir, in Kaletra), saquinavir (Invirase), and tipranavir (Aptivus); nevirapine (Viramune); other medications or devices to treat erectile dysfunction; medications for high blood pressure; determined medications for seizures including carbamazepine (Carbatrol, Epitol, Tegretol, others), phenobarbital, and phenytoin (Dilantin, Phenytek); rifabutin (Mycobutin); and rifampin (Rifadin, Rimactane, in Rifamate, in Rifater). Your doctor may dependence to alter the doses of your medications or monitor you on purpose for side effects. Many supplementary medications may with interact subsequently sildenafil, in view of that be sure to say your doctor not quite every the medications you are taking, even those that get not appear upon this list.