Do not start these medications while taking sildenafil without discussing it with your healthcare provider. tell your doctor if you smoke, if you have had heart surgery within the last 6 months, if you have ever had an erection that lasted for more than 4 hours, and if you have recently lost a large amount of body fluids (dehydration). This can happen if you are sick with fever, diarrhea, or vomiting; sweat a lot; or do not drink enough liquids.

Dosages of Sildenafil

you should know that sildenafil is available under the brand names Liqrev, Revatio, and Viagra. You should only be treated with one of these sildenafil 200 mg products at a time. The following nonprescription or herbal products may interact with sildenafil: cimetidine (Tagamet HB), St. John's wort. Be sure to let your doctor and pharmacist know that you are taking these medications before you start taking sildenafil. Also tell your doctor if you have or have ever had pulmonary veno-occlusive disease (PVOD; blockage of veins in the lungs); a stomach ulcer; heart, kidney, or liver disease; a heart attack; heart failure; angina (chest pain); an irregular heartbeat; a stroke; chest pain; high or low blood pressure; high cholesterol; a bleeding disorder; blood circulation problems; blood cell problems such as sickle cell anemia (a disease of the red blood cells), multiple myeloma (cancer of the plasma cells), or leukemia (cancer of the white blood cells); conditions affecting the shape of the penis (e.g., angulation, cavernosal fibrosis, or Peyronie's disease); or diabetes. Also tell your doctor if you or any of your family members have or have ever had an eye disease such as retinitis pigmentosa (an inherited eye condition that causes loss of vision) or if you have ever had sudden severe vision loss, especially if you were told that the vision loss was caused by a blockage of blood flow to the nerves that help you see.

Product	Dosage	Quantity + Bonus	Price
Kamagra Oral Jelly	100mg	63 + 7 Sachets	224.18€ 213.50€	Buy
Viagra Generic	200mg	180 + 10 Pills	277.56€ 264.34€	Buy
Viagra Generic	50mg	10 Pills	26.87€ 25.59€	Buy
Viagra Generic	100mg	30 + 4 Pills	60.91€ 58.01€	Buy
Kamagra	100mg	60 + 4 Pills	201.34€ 191.75€	Buy
Viagra Generic	50mg	30 + 4 Pills	54.26€ 51.68€	Buy
Viagra Generic	150mg	60 + 4 Pills	111.25€ 105.95€	Buy
Kamagra	100mg	360 + 6 Pills	839.95€ 799.95€	Buy
Viagra Generic	50mg	120 + 6 Pills	129.64€ 123.47€	Buy
Viagra Generic	200mg	60 + 4 Pills	125.19€ 119.23€	Buy
Viagra Generic	200mg	90 + 6 Pills	170.79€ 162.66€	Buy
Kamagra Soft Tabs	100mg	272 + 12 Pills	593.42€ 565.16€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Generic	150mg	10 Pills	36.73€ 34.98€	Buy
Kamagra Oral Jelly	100mg	90 + 8 Sachets	303.56€ 289.10€	Buy

if you are a woman and you are taking sildenafil to treat PAH, tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking sildenafil, call your doctor.

What special dietary instructions should I follow?

Before starting, stopping, or changing any medications while taking sildenafil, please get the advice of your doctor or pharmacist. tell your doctor if you are taking street drugs containing nitrates ('poppers') such as amyl nitrate, amyl nitrite, or butyl nitrate while taking sildenafil. Your doctor will tell you not to take sildenafil if you are taking street drugs containing nitrates. tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Your doctor may need to change the doses of your medications or monitor you carefully for side effects. if you are having surgery, including dental surgery, tell your doctor or dentist that you are taking sildenafil.

8.4 Pediatric Use

However, if you take sildenafil with a high-fat meal, it will take longer for the medication to sildenafil oral strips start to work. If you are taking sildenafil to treat PAH, you will probably take sildenafil three times a day with or without food. Take sildenafil at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Do not take more or less of it or take it more often than prescribed by your doctor.

What should I know about sildenafil before taking it?

Shake the liquid well for 10 seconds before each use to mix the medication evenly. Use the oral syringe provided with your medication to measure and take your dose. Follow the manufacturer's directions to use and clean the oral syringe. Do not mix the liquid with other medications or add anything to flavor the medication. If you are taking sildenafil for erectile dysfunction, your doctor will probably start you on an average dose of sildenafil and increase or decrease your dose depending on your response to the medication. if you are taking sildenafil to treat erectile dysfunction, tell your doctor if you have ever been advised by a healthcare professional to avoid sexual activity for medical reasons or if you have ever experienced chest pain during sexual activity. Sexual activity may be a strain on your heart, especially if you have heart disease.

5.2 Worsening Pulmonary Vascular Occlusive Disease

Sildenafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow easily. If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Sildenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV). Sildenafil comes as a tablet and suspension (liquid) to take by mouth. If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions and the guidelines in this paragraph.

Dosage Modifications

Take sildenafil as needed before sexual activity. The best time to take sildenafil is about 1 hour before sexual activity, but you can take the medication any time from 4 hours to 30 minutes before sexual activity. Sildenafil usually should not be taken more than once every 24 hours. If you have certain health conditions or are taking certain medications, your doctor may tell you to take sildenafil less often. You can take sildenafil with or without food. If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately and avoid sexual activity until your doctor tells you otherwise. tell all your healthcare providers that you are taking sildenafil.

• Sildenafil was originally developed as a treatment for hypertension.
• The 20 mg dose is considered a moderate dosage.
• It can be part of a comprehensive erectile dysfunction treatment plan.
• Regular use should be monitored by a healthcare professional.
• The medication should not be used with other ED drugs simultaneously.

If you ever need emergency medical treatment for a heart problem, the healthcare providers who treat you will need to know when you last took sildenafil. Talk to your doctor about eating grapefruit and drinking grapefruit juice while taking this medicine.

Drug Label Information

Tell your doctor if sildenafil is not working well or if you are experiencing side effects. If you are taking sildenafil for PAH, you should know that sildenafil controls PAH but does not cure it. Continue to take sildenafil even if you feel well. Do not stop taking sildenafil without talking to your doctor. Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.

What is Sildenafil 20 mg Tablet?

This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. tell your doctor and pharmacist if you are allergic to sildenafil, any other medications, or any of the ingredients in sildenafil tablet or suspension. Ask your pharmacist for a list of the ingredients. Some medications should not be taken with sildenafil. Make sure you have discussed any other medications you are currently taking or plan to take before starting sildenafil with your doctor and pharmacist. If you are taking sildenafil for erectile dysfunction, you are unlikely to miss a dose since this medication is taken as needed, not on a regular dosing schedule.

• Sildenafil 20 mg tablets are used primarily to treat erectile dysfunction.
• They work by increasing blood flow to the penis.
• Typically, the medication is taken 30-60 minutes before activity.
• The effects of sildenafil can last up to 4-6 hours.
• Do not take more than one tablet per day.

If you are taking sildenafil for PAH, take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule.

• Sildenafil 20 mg can interact with nitrates used for chest pain.
• Store tablets at room temperature, away from moisture.
• Do not crush or split the tablets; swallow whole.
• It is not recommended for use by women or children.
• Known for its rapid onset, usually within 30 minutes.

Do not take a double dose to make up for a missed one. numbness, burning, or tingling in the arms, hands, feet, or legs pain in muscles, back, arms, or legs changes in color vision (seeing a blue tinge on objects or having difficulty telling the difference between blue and green) sudden severe loss of vision (see below for more information) erection that is painful or lasts longer than 4 hours rash; itching; hives; difficulty breathing or swallowing; swelling of the eyes, face, throat, tongue, or lips Some patients experienced a sudden loss of some or all of their vision after they took sildenafil or other medications that are similar to sildenafil. The vision loss was permanent in some cases.

Further information

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How it works

Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness). Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. It is not known if the vision loss was caused by the medication.

Country/Region	Approval Status	Prescription Required	Notes
USA	Approved by FDA	Yes	Prescription only
European Union	Approved by EMA	Yes	Prescription required
Canada	Approved by Health Canada	Yes	Prescription needed
Australia	TGA approval	Yes	Prescription mandatory

If you experience a sudden loss of vision while you are taking sildenafil, call your doctor immediately.

• Sildenafil 20 mg is one of several available dosages.
• Be aware of potential side effects like dizziness and nausea.
• Inform your doctor about any heart history before use.
• Do not take sildenafil if you have recently had a stroke.
• Follow instructions precisely to ensure safe and effective use.

Do not take any more doses of sildenafil or similar medications such as tadalafil (Cialis) or vardenafil (Levitra) until you talk to your doctor. There have been reports of heart attack, stroke, irregular heartbeat, bleeding in the brain or lungs, high blood pressure, and sudden death in men who took sildenafil for erectile dysfunction. Most, but not all, of these people had heart problems before taking sildenafil. It is not known whether these events were caused by sildenafil, sexual activity, heart disease, or a combination of these and other causes.

Medication Type	Interaction Effect	Risk Level	Recommendation
Nitrates	Severe hypotension	High	Do not combine
Alpha-blockers	Increased risk of blood pressure drop	Moderate	Use under medical supervision
CYP3A4 inhibitors	Increased sildenafil levels	Moderate	Adjust dose or avoid
Ritonavir	Elevated risk of side effects	High	Consult healthcare provider

Talk to your doctor about the risks of taking sildenafil. Some patients experienced a sudden decrease or loss of hearing after they took sildenafil or other medications that are similar to sildenafil. It is not known if the hearing loss was caused by the medication. If you experience a sudden loss of hearing, sometimes with ringing in the ears or dizziness, while you are taking sildenafil, call your doctor immediately. If you are taking sildenafil (Viagra) for erectile dysfunction, do not take any more doses of sildenafil (Viagra) or similar medications such as tadalafil (Cialis) or vardenafil (Levitra) until you talk to your doctor.