Paracetamol is used to treat the following conditions: Fever Muscle Pain Pain Sciatica sildenafil A total of drugs are known to interact with sildenafil. Sildenafil is in the following drug classes: agents for pulmonary hypertension, impotence agents. Sildenafil is used to treat the following conditions: Erectile Dysfunction.Oral medicine for ED also might not be safe or work well if you have: Very low blood pressure, called hypotension, or uncontrolled high blood pressure, called hypertension. This boosts blood flow and helps you get an erection from sexual activity. Please expect up to 4 to 6 weeks for reimbursement. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. Especially tell your healthcare provider if you take any of the following: medicines called nitrates medicines called guanylate cyclase stimulators such as Adempas riociguat medicines called alpha-blockers, such as Hytrin terazosin HCl , Flomax tamsulosin HCl , Cardura doxazosin mesylate , Minipress prazosin HCl , Uroxatral alfuzosin HCl , Jalyn dutasteride and tamsulosin HCl , or Rapaflo silodosin. Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take.WebUses. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, sildenafil works by increasing . WebOct 12, · Viagra (sildenafil) is a brand-name prescription drug that’s used to treat erectile dysfunction (ED). Learn about side effects, warnings, dosage, and more. WebSep 12, · In most males,* Viagra works within 1 hour after it’s taken. It’s possible that Viagra can begin working within 30 minutes of being taken. But other times, it may take .These include a heart attack, stroke or a serious heart rhythm disorder in the past six months. Recent heart or blood vessel problems. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy NAION. The four main medicines taken by mouth for erectile dysfunction are: Avanafil Stendra. Its effects often last for 4 to 5 hours.