Be wary of any product that claims to be a natural form of Viagra. Herbal supplements aren't held to the same standards as prescription and over-the-counter medications — so it can be difficult to know which ones are safe or effective. Prescription medications used to treat erectile dysfunction — sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), and others — work by increasing blood flow to the penis when you become sexually aroused. Some "herbal viagra" supplements are advertised as a cheaper alternative, available without a prescription. Some of these products do contain substances that improve blood flow by relaxing the walls of blood vessels. However, none of them focuses specifically on blood vessels in the penis, as do Viagra and similar prescription drugs. As a result, these "herbal viagra" supplements can cause dangerously low blood pressure in some men — particularly men who take nitrate medications for heart problems. metformin ivf Links to other sites are provided as a convenience to the viewer. Pfizer accepts no responsibility for the content of linked sites. This website is neither owned nor controlled by Pfizer. Pfizer does not endorse and is not responsible for the content or services of this site. Continue You are now leaving to enter a website neither owned nor operated by Pfizer. Links to all outside sites are provided as a resource to our visitors and do not imply an endorsement or recommendation of a particular physician by Pfizer, nor an endorsement of any Pfizer product by a telehealth provider or any physician. Pfizer accepts no responsibility or liability for the content or services of other websites. Valtrex generic name Prescription medications used to treat erectile dysfunction — sildenafil Viagra, tadalafil Cialis, vardenafil Levitra, and others — work by increasing blood flow to the penis when you become sexually aroused. Some "herbal viagra" supplements are advertised as a cheaper alternative, available without a prescription. tadalafil mexico Sildenafil oral tablet is a prescription medication used to treat erectile dysfunction ED and pulmonary arterial hypertension PAH. It's available as generic drugs and as the brand-name drugs. Viagra Warnings. Some medicines are not safe to take with Viagra. Specifically, Viagra shouldn’t be used in combination with a nitrate drug for treating chest pain or heart problems. This. If these effects are mild, they may go away within a few days or a couple of weeks. If they’re more severe or don’t go away, talk to your doctor or pharmacist. Call your doctor right away if you have serious side effects. Call 911 if your symptoms feel life-threatening or if you think you’re having a medical emergency. Serious side effects and their symptoms can include the following: Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs affect each person differently, we cannot guarantee that this information includes all possible side effects. This information is not a substitute for medical advice. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). 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 diseases (such as HIV, hepatitis B, gonorrhea, syphilis). Consult your doctor or pharmacist for more details. Read the Patient Information Leaflet provided by your pharmacist before you start taking sildenafil and each time you get a refill. If you have any questions, ask your doctor or pharmacist. To treat erectile dysfunction-ED, take this drug by mouth as directed by your doctor, usually as needed. Take sildenafil at least 30 minutes, but no more than 4 hours, before sexual activity (1 hour before is the most effective). A high-fat meal may delay how quickly the drug begins to work. Is sildenafil safe Frequently Asked Questions VIAGRA® sildenafil citrate Safety Info, Sildenafil Side Effects, Dosage, Uses, and More Azithromycin dose pediatric Buy zovirax cream cheap Amoxicillin 30 capsules Clonidine is used for Where can i buy amoxicillin 500mg capsules Dec 4, 2018. Learn how Viagra sildenafil can be used safely in most patients with heart disease. Viagra is a vasodilator which lowers systolic blood. Is It Okay to Use Viagra With Heart Disease? - Verywell Health Viagra Sildenafil - Side Effects, Dosage, Interactions - Drugs Is Viagra Sildenafil Safe? - You must check to make sure that it is safe for you to take sildenafil injection PAH with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor. zoloft recreational use Sildenafil is the active ingredient in Viagra and is FDA approved to treat ED. Make sure to read all the important safety information and let us know if you are. See risks and benefits of VIAGRA® sildenafil citrate. Talk to your doctor about VIAGRA® and the right dose to help treat erectile dysfunction ED.