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Some medicines can cause unwanted or dangerous effects when used with Viagra. Tell your doctor about all your current medicines, especially riociguat (Adempas). Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and tlenek azotu viagra dosage recreational drugs such as "poppers". Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis.

No matter what erectile dysfunction treatment or treatments (whether herbal remedies or not) a man ultimately decides upon, experts say it's important to eat healthily and to avoid smoking and heavy drinking. Moreover, adequate exercise, stress reduction, and sleep can improve erectile dysfunction in many. In addition, says Lamm, "A loving, receptive, and responsive partner is a home run. After all, this is still a couple's issue. " Take the Impotence (ED) Quiz. Impotence Slideshow Pictures. Unzip Your Sex Life. Daily Health News. Trending on MedicineNet. Men's Health Resources.

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Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. Viagra dosing information. Usual Adult Dose for Erectile Dysfunction: Initial dose: 50 mg orally once a day, as needed, 1 hour prior to sexual activity.

Rare (less than 0. 1): Retinal hemorrhage, arteriosclerotic retinopathy, retinal disorder, glaucoma, visual field defect, myopia, asthenopia, vitreous floaters, iris disorder, mydriasis, halo vision, eye edema, eye swelling, eyelid edema, scleral discoloration. Frequency not reported: Non-arteritic anterior ischemic optic neuropathy (NAION), retinal vascular occlusion, visual field defect, cataract [Ref] This drug has lesser affinity for isoenzyme PDE6, an enzyme found in the retina. This lower selectivity is thought to be the basis for abnormalities related to color vision observed with higher doses or plasma levels. -Visual color distortions: Chloropsia, chromatopsia, cyanopsia, erythropsia and xanthopsia. -Lacrimation disorders: Dry eye, lacrimal disorder and lacrimation increased [Ref] Respiratory.

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