The Role of Sildenafil Citrate in Erectile Dysfunction

Tell your doctor about all your current medicines, especially riociguat (Adempas). The most common side effects of sildenafil tablets for ED are: Abnormal vision, such as changes in color vision (such as having a blue color tinge) andblurred vision The most common side effects of sildenafil oral film for ED are: Abnormal vision, such as changes in color and blurred vision The most common side effects of sildenafil tablets/ oral suspension, and injection for PAH are: Sildenafil can cause the following serious side effects. If you have an erection that lasts more than 4 hours, get medical help right away.

Feature	Description	Notes
Active Ingredient	Sildenafil Citrate	Active component
Dosage	200mg per tablet	High-dose strength
Form	Oral tablets	Pill form
Manufacturer	Various pharmaceutical companies	Brand and generic versions possible
Typical Use	Erectile dysfunction management	Prescription only

If it is not treated right away, priapism can permanently damage your penis.

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Pronunciation: sil-DEN-a-fil Generic name: sildenafil Brand names: Revatio, Viagra, Vybrique Dosage form: tablets (20 mg; 25 mg, 50 mg, 100 mg), injection (10 mg/12.5 mL), oral suspension (10 mg/mL), oral film (25 mg, 50 mg, 75 mg, 100 mg) Drug classes: Agents for pulmonary hypertension, Impotence medications Sildenafil is used to treat erectile dysfunction (ED) in adult men or pulmonary arterial hypertension (PAH) in adults and children, depending on the brand or formulation. Sildenafil tablets (25 mg, 50 mg, 100 mg; Viagra, generic) and sildenafil oral film (25 mg, 50 mg, 75 mg, 100 mg; Vybrique) are used for ED. Sildenafil tablets (20 mg; Revatio, generic), sildenafil oral suspension (Revatio, generic), and sildenafil injection (Revatio, generic) are used for PAH. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor, which breaks down cyclic GMP and enhances nitric oxide (NO) -mediated smooth muscle relaxation. In erectile dysfunction (ED), this increases blood flow to penile sildenafil white tissue, facilitating an erection.

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In pulmonary arterial hypertension (PAH), it dilates pulmonary vessels by the same mechanism, reducing pulmonary blood pressure and improving exercise capacity. Sildenafil first gained FDA approval on March 27, 1998. Do not take sildenafil if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as "poppers". Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Some medicines can cause unwanted or dangerous effects when used with sildenafil. Sildenafil can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoked or were over 50 years old.

Attribute	200mg Dosage	50mg or 100mg Dosages	Notes
Strength	Very high	Moderate to low	For specific cases
Effect Duration	About 4-6 hours	Similar or slightly less	Longer duration possible
Side Effect Profile	Higher risk of adverse effects	Generally milder	Use with caution
Prescription level	Usually requires strict oversight	Less strict, but still recommended	Medical advice advised

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).

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Stop taking sildenafil and call your healthcare provider right away if you havesudden vision loss in one or both eyes.

What other drugs will affect sildenafil?

Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: pain or tenderness around the eyes and cheekbones diarrhea or stomach cramps (severe or continuing) numbness or tingling of the hands, legs, or feet redness, soreness, swelling, or bleeding of the gums sensation of motion, usually whirling, either of one's self or of one's surroundings sexual problems in men (continuing), including failure to experience a sexual orgasm sores in the mouth and on the lips Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

What are the serious side effects of sildenafil?

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• Sildenafil 200mg can cause serious interactions with nitrates.
• Overdose may lead to priapism, a prolonged erection requiring medical help.
• Use caution when combining with other blood pressure medications.
• Patients with heart conditions should consult a doctor before use.
• The medication is best taken on an empty stomach for faster effect.
• Do not exceed the prescribed dose to avoid adverse effects.

If you have these symptoms, stop taking sildenafil and contact a doctor right away. In addition, heart attack, stroke, irregular heartbeats, and death have happened rarely in people taking sildenafil.

Warnings & Precautions

If you will be taking this medicine for pulmonary arterial hypertension, your doctor will want to check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. If you take sildenafil for pulmonary arterial hypertension, do not take Viagra®, Vibrique™ or other PDE5 inhibitors, including tadalafil (Cialis®) or vardenafil (Levitra®). If you take too much sildenafil or take it together with these medicines, the chance for side effects will be higher. It is important to tell your doctor about any heart problems you have now or may have had in the past.

Terms and Conditions

This medicine can cause serious side effects in patients with heart problems. If you experience a prolonged or painful erection for 4 hours or more, contact your doctor immediately. This condition may require prompt medical treatment to prevent serious and permanent damage to your penis. If you experience a sudden loss of vision in one or both eyes, contact your doctor immediately. Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears. Most, but not all, of these people had heart problems before taking this medicine. It is not known if sildenafil caused these problems.

Before taking this medicine

If you already use medicine for high blood pressure (hypertension), sildenafil could make your blood pressure go too low. Call your doctor right away if you have blurred vision, confusion, dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly, sweating, or unusual tiredness or weakness. This medicine does not protect you against sexually transmitted diseases (including HIV or AIDS). Use protective measures and ask your doctor if you have any questions about this. Do not take other medicines unless they have been discussed with your doctor.

Does sildenafil interact with foods or drinks?

This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. 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 may need medical attention. Check with your doctor immediately if any of the following side effects occur: burning feeling in the chest or stomach burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings decrease in amount of urine or the frequency of urination dizziness or lightheadedness, especially when getting up suddenly from a lying or sitting position dryness, redness, scaling, or peeling of the skin increase in the size of the pupil redness, burning, or swelling of the eyes redness, itching, or tearing of the eyes seeing shades of colors differently than before swelling of the face, hands, feet, or lower legs unusual feeling of burning or stinging of the skin Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Tell all your healthcare providers that you take sildenafil.

• Sildenafil works by inhibiting PDE5 enzyme activity.
• The effects of 200mg may last up to 4-6 hours.
• Avoid high-fat meals before taking sildenafil for faster absorption.
• Warnings include potential for sudden hearing loss.
• Do not take sildenafil if you are on medications containing nitrates.
• Keep a record of side effects to inform your healthcare provider.

If you need emergency medical care for a heart problem, it will be important for your healthcare provider to know when you last took sildenafil. Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease. Sildenafil does not protect you or your partner from getting sexually transmitted diseases, including Human Immunodeficiency Virus (HIV).

• Sildenafil citrate enhances nitric oxide effects during sexual activity.
• Take sildenafil approximately one hour before planned intercourse.
• Avoid alcohol consumption to reduce potential side effects.
• The tablet should be swallowed whole with water, not split or crushed.
• Use sildenafil only as directed by a healthcare professional.
• Repeat doses are usually not advised within 24 hours.

Sildenafil may cause low blood pressure, which may cause you to feel faint or dizzy. Lie down if you feel faint or dizzy.

Precaution	Recommendation	Rationale
Avoid alcohol	Can lead to increased side effects	Reduced effectiveness or adverse effects
Timing of dose	Take 30-60 mins before activity	Optimal absorption and effectiveness
Combined medication use	Always consult healthcare provider	To prevent interactions and side effects

Tell your doctor if you get more short of breath after you start sildenafil. More shortness of breath than usual may be due to your underlying medical condition. Do not take Viagra while also taking Revatio. Tell your healthcare provider if you have any side effect that bothers you or does not go away. These are not all of the possible side effects of sildenafil. Have allergies to sildenafil, Viagra, Revatio, Vybrique, or any of the ingredients in the sildenafil formulation you are taking Take other medicines for pulmonary arterial hypertension, such as riociguat (Adempas) Take other medicines for pulmonary arterial hypertension, such as riociguat (Adempas) Take other medicines that lower your blood pressure, such as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs that also contain nitrates, such as "poppers".

• Sildenafil can sometimes interact with certain antidepressants and antibiotics.
• Use the lowest effective dose to minimize risks and side effects.
• Alcohol can amplify unwanted effects like dizziness or hypotension.
• Regular medical checkups are advisable during long-term use.
• Ensure you only purchase from licensed pharmacies to avoid fakes.
• The medication should not be used with other ED treatments simultaneously.

To make sure sildenafil is safe for you, tell your healthcare provider about all your medical conditions, including if you have: Or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure Had heart surgery within the last 6 months Low blood pressure, or high blood pressure that is not controlled A physical deformity of the penis (such as Peyronie's disease) Been told you should not have sexual intercourse for health reasons and you are a male Had an erection that lasted for more than 4 hours Problems with your blood cells, such as sickle cell anemia, multiple myeloma, or leukemia Retinitis pigmentosa, a rare genetic (runs in families) eye disease Ever had severe vision loss, including an eye problem called non-arteritic anterior ischemic optic neuropathy (NAION) Kidney problems or are having kidney dialysis Are pregnant or intending to become pregnant (for patients with PAH) Are breastfeeding or intending to breastfeed (for patients with PAH).