WebOct 1, · Sildenafil (Oral Route) Side Effects Side Effects Drug information provided by: Merative, Micromedex ® Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they .They are PDE5 inhibitors that allow for increased blood flow to the penis, leading to more frequent and harder erections. Also tell your doctor if you have or have ever had pulmonary veno-occlusive disease PVOD; blockage of veins in the lungs ; a stomach ulcer; heart, kidney, or liver disease; a heart attack; heart failure; angina chest pain ; an irregular heartbeat; a stroke; chest pain; high or low blood pressure; high cholesterol; a bleeding disorder; blood circulation problems; blood cell problems such as sickle cell anemia a disease of the red blood cells , multiple myeloma cancer of the plasma cells , or leukemia cancer of the white blood cells ; conditions affecting the shape of the penis e. Sildenafil comes as a tablet and suspension liquid to take by mouth. Medicines that block an enzyme called CYP3A4. Do not take a double dose to make up for a missed one.WebViagra. 50 mg orally 1 hour before sexual activity. may be increased to mg or reduced to 25 mg, depending on effectiveness and tolerance. not to exceed mg/day. Pulmonary Arterial Hypertension. Revatio. Oral: 5 mg or 20 mg 3 . WebJan 28, · Here are some fast facts about Viagra: Active ingredient: sildenafil Drug class: phosphodiesterase-5 inhibitor Drug form: oral tablet As with other drugs, Viagra can cause side effects. Read on to. WebApr 21, · Headache, flushing, and upset stomach are common Viagra side effects. These effects are usually mild and often resolve on their own. While rare, Viagra can cause an erection that lasts longer than 4 hours (priapism). This can result in permanent damage if left untreated. Vision changes are also possible.A starting oral dose of 25 mg should be considered in those patients [see Dosage and Administration 2. If you’re taking sildenafil for pulmonary hypertension and get these side effects, there are things you can do to help cope with them: Headaches Make sure you rest and drink plenty of fluids. These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir. They may be able to recommend a nasal spray that helps. Also tell your doctor if you have or have ever had pulmonary veno-occlusive disease PVOD; blockage of veins in the lungs ; a stomach ulcer; heart, kidney, or liver disease; a heart attack; heart failure; angina chest pain ; an irregular heartbeat; a stroke; chest pain; high or low blood pressure; high cholesterol; a bleeding disorder; blood circulation problems; blood cell problems such as sickle cell anemia a disease of the red blood cells , multiple myeloma cancer of the plasma cells , or leukemia cancer of the white blood cells ; conditions affecting the shape of the penis e.
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