Ask your healthcare professional how you should dispose of any medicine you do not use. Store mixed oral liquid in the refrigerator. Throw away any unused mixed Revatio® oral liquid after 60 days. It is important that you tell all of your doctors that you take sildenafil. If you need emergency medical care for a heart problem, it is important that your doctor pfizer sildenafil 100 knows when you last took sildenafil.

  • Sildenafil 25mg is sometimes used off-label for other conditions.
  • Login into your doctor’s advice before adjusting your dose.
  • Take tablets with water; avoid crushing or chewing them.
  • The effects of sildenafil last from 4 to 6 hours.
  • It is not an aphrodisiac and requires sexual arousal for effectiveness.
  • Regular health check-ups are recommended during use.

Do not use this medicine if you are also using a nitrate medicine, often used to treat angina or high blood pressure. Some illegal ("street") drugs called "poppers" (such as amyl nitrate, butyl nitrate, or nitrite).

Medication Class Effect on Sildenafil Clinical Advice
Nitrates Dangerous blood pressure drop Avoid concurrent use
Alpha-blockers Increased hypotension risk Use with caution
CYP3A4 inhibitors (e.g., ketoconazole) Increase sildenafil levels Dose adjustment may be necessary
Other PDE5 inhibitors Increased side effects Do not combine

Do not use this medicine if you also use riociguat (Adempas®).

Aspect Details Notes
Generic Name Sildenafil citrate Active ingredient
Brand Names Viagra, Kamagra, others Marketed under various names
Tablet Strength 25 mg Dosage per tablet
Form Oral tablet Administration form
Manufacturer Various pharmaceutical companies Production sources

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®).

What Is Viagra?

This medicine usually begins to work for erectile dysfunction within 30 minutes after taking it. It continues to work for up to 4 hours, although its action is usually less after 2 hours. Use only the brand of this medicine that your doctor prescribed. Different brands may not work the same way. The dose of this medicine will be different for different patients.

How it works

Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

If you were to talk to a doctor about sildenafil, what would you ask first?

For treatment of erectile dysfunction:For oral dosage form (tablets):Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Alternatively, the medicine may be taken 30 minutes to 4 hours before sexual intercourse. Your doctor may adjust your dose if needed.Adults 65 years of age and older—25 mg as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your dose if needed.Children—Use is not recommended.For oral dosage form (film):Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your dose as needed.Adults 65 years of age and older—25 mg as a single dose no more than once a day, 1 hour before sexual intercourse. If you take too much sildenafil or take it together with these medicines, the chance for side effects will be higher.

Product Dosage Quantity + Bonus Price
Viagra Generic50mg360 + 10 Pills225.33€ 214.60€
Viagra Generic50mg10 Pills26.87€ 25.59€
Viagra Generic100mg90 + 6 Pills129.02€ 122.88€
Kamagra100mg84 + 6 Pills264.44€ 251.85€
Viagra Generic200mg270 + 10 Pills379.76€ 361.68€
Kamagra Soft Tabs100mg12 Pills57.55€ 54.81€
Viagra Generic50mg20 Pills40.52€ 38.59€
Viagra Generic25mg10 Pills25.19€ 23.99€
Viagra Generic200mg60 + 4 Pills125.19€ 119.23€
Kamagra Polo100mg272 + 12 Pills622.94€ 593.28€
Kamagra100mg180 + 6 Pills436.79€ 415.99€
Viagra Generic100mg360 + 10 Pills330.21€ 314.49€
Kamagra100mg60 + 4 Pills201.34€ 191.75€

It is important to tell your doctor about any heart problems you have now or may have had in the past. This medicine can cause serious side effects in patients with heart problems.

5.4 Hearing Loss

Children 1 year of age and older weighing 45 kilograms (kg) or more—20 mg 3 times a day. However the dose is usually not more than 40 mg 3 times a day. Children 1 year of age and older weighing 20 to 45 kg—20 mg 3 times a day. Children 1 year of age and older weighing 20 kg or less—10 mg 3 times a day. Children younger than 1 year of age—Use and dose must be determined by your doctor. 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.

5.5 Hypotension when Co-administered with Alpha-blockers or Anti-hypertensives

Use sildenafil exactly as directed by your doctor. Do not use more of it and do not use it more often than your doctor ordered. If too much is used, the chance of side effects is increased. This medicine comes with a patient information leaflet. Read and follow these instructions carefully before you start using sildenafil and each time you get a refill of your medicine.

Clinical monitoring

Ask your doctor if you have any questions. You may take this medicine with or without food. Place the film on top of your tongue. It will dissolve in your mouth and can be swallowed with saliva without using water or other liquids. Shake the bottle well for at least 10 seconds before each use.

Vybrique Oral Film

Remove the cap by pushing it down and twisting it counter-clockwise. Push the plunger of the syringe, then insert the tip into the bottle while holding the bottle upright on a flat surface. Slowly pull back the plunger until the required dose. If you see air bubbles in the syringe, repeat the steps. Place the tip of the syringe into you or your child's mouth and point it towards the cheek. 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. 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. 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.

  • This dose is often prescribed for sensitive individuals or beginners.
  • Sildenafil 25mg may start working within 30 minutes of ingestion.
  • It’s important to follow prescribed dosage instructions carefully.
  • Sildenafil can interact with medications like nitrates.
  • Avoid grapefruit juice, as it can increase drug levels.
  • The pill should be swallowed whole with water.

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.

Side Effects and Drug Interactions

For oral dosage forms (suspension or tablets): If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep out of the reach of children. Do not keep outdated medicine or medicine no longer needed. 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.

How to Take Sildenafil Correctly for Erectile Dysfunction

Your doctor may adjust your dose as needed.Children—Use is not recommended. For oral dosage form (tablets):Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your sildenafil 45 mg chewable tablets dose if needed.Children—Use is not recommended. Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your dose if needed.

Effective treatments, trusted by over 500,000 men

Adults 65 years of age and older—25 mg as a single dose no more than once a day, 1 hour before sexual intercourse. For oral dosage form (film):Adults up to 65 years of age—50 milligrams (mg) as a single dose no more than once a day, 1 hour before sexual intercourse. Your doctor may adjust your dose as needed. For treatment of pulmonary arterial hypertension:For oral dosage forms (suspension or tablets):Adults—20 milligrams (mg) 3 times a day. Your doctor may adjust your dose as needed and tolerated.

Other Medical Problems

However, the dose is usually not more than 80 mg 3 times a day.Children 1 year of age and older weighing 45 kilograms (kg) or more—20 mg 3 times a day. However the dose is usually not more than 40 mg 3 times a day.Children 1 year of age and older weighing 20 to 45 kg—20 mg 3 times a day.Children 1 year of age and older weighing 20 kg or less—10 mg 3 times a day.Children younger than 1 year of age—Use and dose must be determined by your doctor. For oral dosage forms (suspension or tablets):Adults—20 milligrams (mg) 3 times a day. Adults—20 milligrams (mg) 3 times a day. However, the dose is usually not more than 80 mg 3 times a day. 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 25mg tablets are available by prescription only.
  • They are a common initial dose for men new to the medication.
  • Dose adjustments depend on effectiveness and side effects.
  • Always inform your doctor about other medications you are taking.
  • Overdose symptoms include prolonged erections and chest pain.
  • Keep medication out of reach of children and pets.