8 USE IN SPECIFIC POPULATIONS

Headaches and sensitivity to light can also be improved by turning off any bright lights around you. If you have bothersome headaches with Viagra, ask your doctor or pharmacist to recommend a pain reliever that’s safe for you to use.

What should I do if I forget a dose?

Headaches are a common side effect of Viagra. Headaches, as well as flushing and dizziness, occur because Viagra widens certain blood vessels in your body. (The drug doesn’t just affect the blood vessels in your penis.) If you have a headache after taking Viagra, it should go away fairly quickly. But if it’s bothersome, you can take a pain reliever containing acetaminophen or ibuprofen. Ask your doctor or pharmacist to recommend a medication that’s safe for you to use. If you get indigestion after taking Viagra, try taking your dose of Viagra with a snack or light meal. Just be aware that if you do this, Viagra may take slightly longer to start working for you. (This is especially true if you eat a high fat meal with your dose.) If your indigestion is bothersome, ask your doctor or pharmacist to recommend medication to help reduce your discomfort.

Also keep in mind that certain side effects occur more often with higher doses of Viagra.

5.2 Prolonged Erection and Priapism

Note: The Food and Drug Administration (FDA) tracks side effects of drugs it has approved. If you would like to report to the FDA a side effect you’ve had with Viagra, you can do so through MedWatch. Mild side effects of Viagra can include:* mild and temporary vision changes, such as a blue tinge in your vision, blurred vision, and sensitivity to light Most of these side effects may go away within a few days or a couple of weeks. But if they become more severe or don’t go away, talk with your doctor or pharmacist. * This is a partial list of mild side effects from Viagra.

Drug details

To learn about other mild side effects, talk with your doctor or pharmacist, or view the drug’s prescribing information. Serious side effects from Viagra aren’t common, but they can occur. 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: Non-arteritic anterior ischemic optic neuropathy (NAION), which is an eye condition that causes damage to your optic nerve.

Can Viagra be crushed, split, or chewed?

This is a medical emergency that should be treated right away. Symptoms can include: sudden decrease in vision in one or both of your eyessudden loss of vision in one or both of your eyes sudden decrease in vision in one or both of your eyes sudden loss of vision in one or both of your eyes This condition may also involve other symptoms, such as: tinnitus (ringing or buzzing in your ears)dizziness tinnitus (ringing or buzzing in your ears) Priapism, which is a long-lasting and sometimes painful erection. Symptoms can include: an erection that won’t go away, and may not be fully firmpain in the penis an erection that won’t go away, and may not be fully firm Other serious side effects, which are explained in more detail below in “Side effect details,” include: low blood pressure, if Viagra is taken with certain other medications cardiovascular problems, such as heart attack, irregular heartbeat, or stroke, all of which occur mainly in people with heart disease You may wonder how often certain side effects occur with this drug. Here’s some detail on several of the side effects this drug may cause. Note: You can also refer to this in-depth article for details about Viagra’s side effects. These side effects include headaches, flushing, indigestion, nasal congestion, and changes in your vision.

2.5 Dosage Adjustments in Special Populations

If you have a severe headache or a headache that won’t go away, call your doctor. They’ll help determine the best treatment for your headache. Most of the mild side effects of Viagra either tend to go away within a few hours of taking your dose or can be easily relieved. For example, headaches, flushing, and dizziness can often be eased by lying down and resting. Avoiding alcohol will also help reduce these side effects. So if these side effects are a problem for you, talk with your doctor about taking a lower dosage of Viagra. Some of Viagra’s rare side effects need immediate medical attention. For example, you should call your doctor or go to the nearest emergency room right away if you have: an erection that doesn’t go away and lasts for more than 4 hours chest pain, dizziness, or nausea while you’re having sex, and these symptoms don’t go away when you stop having sex and begin to rest sudden loss of vision in one or both of your eyes Viagra is a brand-name drug that contains the active ingredient sildenafil. This active ingredient is also available in generic forms. A generic drug is an exact copy of the active ingredient in a brand-name medication.

12.2 Pharmacodynamics

As with most drugs, some people can have an allergic reaction after taking Viagra. Symptoms of a mild allergic reaction can include: A more severe allergic reaction is rare but possible. Symptoms of a severe allergic reaction can include: swelling under your skin, typically in your eyelids, lips, hands, or feet swelling of your tongue, mouth, or throat Call your doctor right away if you have a severe allergic reaction to Viagra. But call 911 if your symptoms feel life threatening or if you think you’re having a medical emergency. Viagra can temporarily lower your blood pressure after you take the drug.

Revatio Injection

This occurred in clinical trials but was not significant enough to cause problems for most people. But keep in mind that a sudden drop in your blood pressure could be dangerous if you have certain heart conditions. Sudden low blood pressure may also be dangerous if you’re taking certain other medications. For example, you should not take Viagra if you take nitrate medications to treat chest pain. You should also avoid taking Viagra if you take a drug called riociguat (Adempas).

Sildenafil may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

Taking Viagra with these medications can cause a dangerous drop in your blood pressure that leads to heart attack or stroke. If you have low blood pressure, taking Viagra could make you feel dizzy or lightheaded, or cause you sildenafil citrate 120 mg to faint. You’re also more likely to have these problems if you take Viagra with certain drugs used to treat high blood pressure or enlarged prostate. If you feel dizzy or faint after taking Viagra, lie down until this feeling passes. If you have a heart problem or low blood pressure, talk with your doctor about whether Viagra is safe for you. Generics are considered to be as safe and effective as the original drug.

They tend to cost less than brand-name drugs. If you’re interested in taking a generic form of Viagra, talk with your doctor. They can tell you if it comes in forms and strengths that can be used for your condition. The Viagra dosage your doctor prescribes will depend on several factors. whether you have liver or kidney problems The following information describes dosages that are commonly used or recommended. However, be sure to take the dosage your doctor prescribes for you.

• Patients should avoid driving after taking sildenafil until effects are known.
• Alcohol can negate the effectiveness of sildenafil.
• The medication may cause dizziness; avoid operating machinery.
• Always inform your doctor of all medications you are taking.
• Do not use sildenafil if you are taking riociguat or similar drugs.

Your doctor will determine the best dosage to fit your needs.

Adverse effects

Instead, it belongs to a group of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Viagra works by blocking the action of a certain enzyme in your body. Since Viagra has been released onto the market, there have been a few reports of bleeding in people who have taken the drug. However, there’s no evidence that Viagra caused these bleeding problems. It’s not known if Viagra is safe for use in people with a bleeding problem.

Can women take Viagra?

If you have any bleeding problems, talk with your doctor about whether Viagra is safe for you. After taking a dose of Viagra, the drug’s level in your body will gradually decrease over a period of a few hours. You’ll have low levels of the drug in your body after about 4 hours. (And at this point, the drug won’t be working any longer.) But it can actually take about 24 hours for Viagra to be completely removed from your body. If you have other questions about how long Viagra works, talk with your doctor.

Side effect details

Viagra can cause mild or serious side effects. The following lists contain some of the key side effects that may occur while taking Viagra. These lists don’t include all possible side effects. For more information on the possible side effects of Viagra, talk with your doctor or pharmacist. They can give you tips on how to deal with any side effects that may be concerning or bothersome. For more information about Viagra’s dosage, see this comprehensive article. Viagra comes as tablets that you swallow. It’s available in three strengths: 25 milligrams (mg), 50 mg, and 100 mg.

The typical dose of Viagra for erectile dysfunction (ED) is 50 mg. You can take this dose 30 minutes to 4 hours before you plan to have sexual activity.

• Pfizer Sildenafil 100mg is available by prescription only.
• Avoid alcohol when taking sildenafil as it can increase side effects.
• It’s important to discuss any heart conditions with your doctor.
• Sildenafil is not an aphrodisiac; it only works with sexual stimulation.
• Store the medication at room temperature, away from moisture.

But for most people, it’s recommended that you take your dose about an hour before having sex.

Don’t take Viagra more than once per day. If Viagra isn’t working for you, your doctor may increase your dose of the drug. Your doctor may prescribe a different dosage of Viagra for you depending on several factors.

Viagra side effects

For more information about taking Viagra with other medications, see the “Viagra interactions” section. And for more information about taking Viagra if you have heart or blood pressure problems, see the “Viagra precautions” section. On rare occasions, some people taking Viagra have had a heart attack, stroke, or an irregular heartbeat. These conditions mainly occurred in people who already had a heart problem. But sometimes these conditions occurred in people who didn’t have a heart problem.

Viagra and children

It’s not known for sure if Viagra caused the side effects. If you have chest pain after taking Viagra, you should stop sexual activity right away. And if you have a heart problem, talk with your doctor before starting Viagra. They can discuss with you whether it’s safe for you to use this drug. For more information about taking Viagra if you have heart problems, see the “Viagra precautions” section. These factors may include having liver or kidney problems, taking certain other medications, and being 65 years or older.