14 CLINICAL STUDIES

In some patients, the use of sildenafil with alpha-blockers can lead to a drop in blood pressure or fainting Other drugs to treat high blood pressure or a prostate disorder Medicines to treat HIV, such as protease inhibitors, such as ritonavir and saquinavir Some types of oral antifungal medicines, such as ketoconazole and itraconazole Some types of antibiotics, such as erythromycin Other medicines that treat high blood pressure Medicines or treatments for ED, such as avanafil (Stendra), tadalafil (Cialis), or vardenafil (Levitra). Tell your doctor about all other medications you use for erectile dysfunction. Ask your healthcare provider or pharmacist for a list of these medicines if you are not sure.

Point	Explanation	Additional Advice
Take on an empty stomach or after light meal	Food, especially fatty meals, can delay absorption	Take 30 minutes to 1 hour before activity
Do not exceed prescribed dose	Overdose can increase side effects	Follow prescribed instructions
Be cautious with alcohol	Alcohol can worsen side effects or diminish effectiveness	Limit alcohol intake during treatment
Seek medical attention for prolonged erections	Erections lasting more than 4 hours can cause damage	Immediate medical care required
Inform healthcare provider of all medications	To prevent dangerous interactions	Especially nitrates or blood pressure meds

Keep a list of them to show to your healthcare provider and pharmacist when you get a new medicine.

• Sildenafil 100 mg tablets are primarily used to treat erectile dysfunction.
• The medication works by increasing blood flow to the penis.
• It is usually taken 30-60 minutes before sexual activity.
• Do not take more than one tablet per 24 hours to avoid overdose.
• Common side effects include headache, flushing, and nasal congestion.
• Sildenafil 100 mg should be used only under medical supervision.
• Avoid consuming high-fat meals close to the time of intake.
• It may interact with nitrates, leading to dangerous blood pressure drops.
• Store in a cool, dry place away from children and pets.

Other drugs may interact with sildenafil, including prescription sildenafil citrates and over-the-counter medicines, vitamins, and herbal products.

• The pill is oval-shaped and often light blue in color.
• It should not be chewed or crushed; swallow whole with water.
• Do not use sildenafil if you have a condition affecting your heart.
• Keep track of your dosage to prevent accidental overuse.
• It’s effective for about 4-6 hours after taking the tablet.
• Some users may experience indigestion or stomach upset.
• Using sildenafil with certain medications can increase side effects.
• Consult your healthcare provider for personalized dosage recommendations.
• Avoid grapefruit or grapefruit juice while using sildenafil.

Not all possible drug interactions are listed here. Store sildenafil tablets and oral film at room temperature, between 20°C and 25°C (68°F and 77°F). Store sildenafil reconstituted oral suspension below 30°C (86°F) or in a refrigerator between 2°C to 8°C (36°F to 46°F). Throw away the reconstituted oral suspension after 60 days. Active ingredient: sildenafil citrateInactive ingredients: dextrose and water for injection. Contains no ingredients made from gluten-containing grain (eg, wheat, barley, or rye). Revatio is distributed by Pfizer Labs, Division of Pfizer Inc., NY, NY 10017. Viagra is distributed by Pfizer Labs, Division of Pfizer Inc., NY, NY 10017. It is distributed by: IBSA Pharma Inc, Parsippany, NJ 07054 USA. Cialis vs Viagra - What's the difference between them? Do you know these 11 amazing facts about Viagra? Is generic Viagra available in the U.S.? Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. 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 person get and keep an erection. This drug does not protect against sexually transmitted diseases (such as HIV, hepatitis B, gonorrhea, syphilis). Using an effective barrier method (latex or polyurethane condom/dental dams) during sexual activity will help to decrease your buy sildenafil uk risk of infection. This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional. Sildenafil is also available in other brands and strengths for high blood pressure in the lungs (pulmonary hypertension). Read the Patient Information Leaflet if available from 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 works best). This medication may take longer to start working if you take it with a high-fat meal. Do not take more than once daily as needed. The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Chemical synthesis

Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device sildenafil citrate tables (not a kitchen spoon). When sildenafil is used for ED, it is used as needed, so you are not likely to miss a dose. If you are taking sildenafil for PAH and you miss a dose, take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

MEDICAL SUPPLIES

If you take too much sildenafil, call your doctor or go to the nearest hospital emergency room. Drinking alcohol with sildenafil can cause side effects. Grapefruit juice and products may interact with sildenafil, leading to unwanted side effects. Avoid using any other medicines to treat impotence, such as alprostadil or yohimbine, without first talking to your doctor. Tell your healthcare provider about all the medicines you take, including prescription and over-the-countermedicines, vitamins, and herbal supplements. Tell your doctor if your condition does not get better.

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Dizziness, headache, flushing, or stomach upset may occur. Vision changes such as increased sensitivity to light, blurred vision, or trouble telling blue and green colors apart may also occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Interacting Drug Type	Specific Drugs	Effect on Sildenafil	Clinical Significance
Nitrates	Nitroglycerin, Isosorbide Mononitrate	Potentiate hypotension	Contraindicated
Alpha-blockers	Doxazosin, Tamsulosin	Enhance hypotensive effect	Caution advised
CYP3A4 Inhibitors	Ketoconazole, Ritonavir	Increase sildenafil levels	Dose adjustment may be needed
CYP3A4 Inducers	Rifampin, Phenytoin	Decrease sildenafil effectiveness	May require dosage adjustment

To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Sexual activity may put extra strain on your heart, especially if you have heart problems. If you have heart problems and experience any of these serious side effects while having sex, stop and get medical help right away: Rarely, sudden decreased vision, or even permanent blindness, may occur in one or both eyes (NAION). If this serious problem occurs, stop taking sildenafil and get medical help right away.

Proper Use

Women with pulmonary arterial hypertension should not stop taking sildenafil without talking to their doctor if they discover they are pregnant. It is not known whether sildenafil passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breastfeeding a baby. Women with pulmonary arterial hypertension should not stop taking sildenafil without talking to their doctor. Take sildenafil oral tablets exactly as your healthcare provider tells you to take it.

Viagra and children

Your healthcare provider will tell you how much to take and when to take it. Your healthcare provider may change your dose if needed. You may take sildenafil between 30 minutes to 4 hours before sexual activity if needed. If you take sildenafil after a high-fat meal (such as a cheeseburger and fries), sildenafil may take a little longer to start working. If you accidentally take too much sildenafil, call your doctor or go to the nearest hospital emergency room right away.

Adjusting Your Sildenafil Dosage Over Time

Sildenafil can help you have an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of sildenafil. Take sildenafil oral film (Vybrique) exactly as your healthcare provider tells you to take it. You have a slightly greater chance of developing NAION if you have heart disease, diabetes, high cholesterol, certain other eye problems ("crowded disk"), high blood pressure, if you are over 50, or if you smoke.

Other uses for this medicine

Your healthcare provider will tell you how much sildenafil to take and when to take it. Take sildenafil by mouth about 1 hour before sexual activity. You may take sildenafil between 30 minutes and 4 hours before sexual activity if needed. Do not take more than once a day. If you take too much sildenafil, call your healthcare provider or go to the nearest hospital emergency room right away.

How does sildenafil work (mechanism of action)?

Do not remove the film from the pouch unless ready for immediate use. Do not handle the oral film with wet hands. See the Vybrique Prescribing Information for more information about how to take sildenafil oral film. Take sildenafil exactly as it was prescribed for you. Follow all directions on your prescription label and read all medication guides or instruction sheets.

When and How to Take Sildenafil for Best Results

Do not change your dose or stop taking this medicine on your own. Take sildenafil tablet or oral suspension 3 times a day, about 4 to 6 hours apart. Take at approximately the same times every day. Sildenafil oral suspension will be mixed for you by your pharmacist. Do not mix with other medicines or flavorings. Rarely, a sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness, may occur. Stop taking sildenafil and get medical help right away if these effects occur. Rarely, males may have a painful or prolonged erection lasting 4 or more hours. If this occurs, stop using this drug and get medical help right away, or permanent problems could occur. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: itching/swelling (especially of the face/tongue/throat) This is not a complete list of possible side effects.

Why is this medication prescribed?

Sildenafil may affect the way other medicines work, and other medicines may affect the way sildenafil works, causing side effects. Especially tell your healthcare provider if you take: Nitrates for chest pain or heart problems. This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure Alpha-blockers are sometimes prescribed for prostate problems orhigh blood pressure. If you notice other effects not listed above, contact your doctor or pharmacist. You may report side effects to FDA at 1-800-FDA-1088 or at In Canada - Call your doctor for medical advice about side effects.

• Sildenafil 100 mg is often part of a broader treatment plan.
• It’s important to follow your doctor’s instructions precisely.
• Overuse can lead to priapism, a painful and prolonged erection.
• It is not a cure for erectile dysfunction but helps manage symptoms.
• Do not take sildenafil if you are on medications containing nitroglycerin.
• Regular check-ups may be necessary to monitor health effects.
• The medication has been available since the late 1990s.
• Use caution when combining sildenafil with blood pressure medications.
• Seek immediate medical help if you experience vision loss.

You may report side effects to Health Canada at 1-866-234-2345. Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.

Side Effect	Frequency	Severity	Notes
Headache	Very common	Mild	Usually resolves with time
Flushing	Common	Mild	Due to vasodilation
Nasal Congestion	Common	Mild	Congestion of nasal passages
Dizziness	Less common	Mild	Especially when standing up quickly
Dyspepsia	Less common	Mild	Indigestion or stomach upset
Visual Disturbances	Rare	Variable	Changes in color perception or blurred vision