It can be dangerous to take sildenafil if you also take medicines called nitrates (often given for chest pain). Rarely reported side effects include: an erection that will not go away (priapism). The common side effects of Cialis include: 3 Headache Heartburn and indigestion Nausea and diarrhea Sildenafil side effects Get emergency medical help if you have signs of an allergic reaction to sildenafil: hives ; difficulty breathing; swelling of your face, lips, tongue, or throat. If . Viagra can cause side effects. Stop taking sildenafil and get emergency medical help if you have: Sildenafil (Revatio) is used to improve the ability to exercise in adults and children 1 year of age and older with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness). Sildenafil (Viagra) Side effects of sildenafil Like all medicines, sildenafil can cause side effects, although not everyone gets them. This can result in permanent damage if left untreated. Trouble keeping an erection Reduced sexual desire When to see a doctor A family doctor is a good place to start when you have erectile problems. The combination can cause a dangerous fall in your blood pressure. Many people have no side effects or only mild ones. Applies to sildenafil: oral powder for suspension, oral tablet. These effects are usually mild and often resolve on their own. Viagra can also cause an erection lasting longer than 4 hours (priapism). In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an erection.This drug does not protect against sexually transmitted. Oral: 5 mg or 20 mg 3 times daily, administered 4-6 hours apart. Serious side effects of Viagra include low blood pressure and abnormal ejaculation. 50 mg orally 1 hour before sexual activity. If it is not treated right away, priapism can permanently damage your penis; sudden vision loss in one or both eyes. These side effects may go away during treatment as your body adjusts to the medicine. 8. Anyone considering using these drugs should speak with a doctor first. Professional info FAQ Summary Commonly reported side effects of sildenafil include: dyspepsia, headache, visual disturbance, and flushing. Find the right pill for you Vaginal Ring Contraceptive Patch Morning After Pill ellaOne Levonelle Levonorgestrel Period Delay Norethisterone Utovlan Cystitis Treatment UTI Test Kit - TestCard Revatio. Viagra (sildenafil) is a brand-name prescription drug that's used to treat erectile dysfunction (ED). Other side effects include: epistaxis, insomnia, nasal congestion, and rhinitis. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. If you're taking it for erection problems you're unlikely to get side effects as you're only taking it for a short time. What Are The Side Effects of Viagra? Examples of Viagra's more commonly reported side effects include: headache flushing (temporary warmth, redness, or deepening of skin color) stuffy nose indigestion (upset stomach) mild. Sildenafil (Oral Route) Side Effects - Mayo Clinic Drugs and Supplements Sildenafil (Oral Route) Description and Brand Names Drug information provided by: IBM Micromedex US Brand Name Revatio Viagra Descriptions Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Potential Side Effects Headache Heartburn Diarrhea Feeling of warmth Nosebleeds For most men who have trouble keeping an erection firm enough for sex (erectile dysfunction), these medications work well and cause few side effects. Table of contents Headaches Flushing | Superdrug Online Doctor Contraceptive Pill Yasmin Microgynon Cerelle Rigevidon Cerazette Hana More. VIAGRA can cause serious side effects. Viagra is an effective medication for ED. Dizziness. Side effects may include: sensitivity to light muscle aches heartburn nose bleeding flushed skin problems falling asleep tingling in the arms,. The most common side effects are headaches, feeling sick, indigestion and dizziness. Continue reading for a comprehensive list of adverse effects. Vision changes are also possible. However, people taking the 100-mg dose had an increased risk of upset stomach, vision changes, and runny nose. Vision changes. not to exceed 100 mg/day. Viagra relaxes muscles found in the walls of blood vessels and increases blood flow to particular areas of the body. While rare, Viagra can cause an erection that lasts longer than 4 hours (priapism). But there are some side effects you should be aware of. See your doctor if: You have concerns about your erections or you're experiencing other sexual problems such as premature or delayed ejaculation If you have an erection that lasts more than 4 hours, get medical help right away. Drug interactions of Viagra include other PDE5 inhibitors. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about . Side effects Interactions Dosage FAQ What is Viagra? Viagra. Viagra may cause prolonged erections or priapism (painful erections lasting more than 6 hours). Possible Viagra side effects include: Headache Flushing (skin redness) Upset stomach. Viagra, Cialis, Levitra, and Stendra have many similar side effects and interactions, but there are also some variations. Common side effects Common side effects of sildenafil happen in more than 1 in 100 people. Viagra may cause some unwanted side effects. Viagra is used to treat erectile dysfunction (impotence) in men. 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