Sildenafil is also available in other brands and strengths for high blood pressure in the lungs (pulmonary hypertension).

  • Do not take sildenafil if you have a history of heart attack or stroke.
  • Women and children should not use sildenafil products.
  • The medication can cause temporary vision disturbances, including blue-tinted vision.
  • Always consult a healthcare provider before starting sildenafil therapy.
  • Use caution when driving or operating machinery after taking sildenafil.
  • Sildenafil is contraindicated in people with hypersensitivity to the drug.
  • Some users report improved erectile function within 15 minutes.
  • It is essential to stay hydrated, but avoid consuming large amounts of alcohol.
  • Men with certain health conditions should undergo a medical exam before use.
  • Overuse or misuse of sildenafil can lead to serious health complications.

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.

Key takeaways about sildenafil

Don't be fooled into buying "herbal viagra." Never take any medicines that claim to be the "herbal" or nonprescription version of an oral medicine for ED. These aren't an effective option, and some contain harmful substances. Our caring team sildenafil citrate tablets 50 mg of Mayo Clinic experts can help you with your health concerns. Visit Mayo Clinic Men's Health to get started. Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). 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.

  • Sildenafil is a popular choice for men seeking non-invasive ED therapy.
  • It's important to have realistic expectations about sildenafil's effects.
  • The medication does not increase libido but improves blood flow.
  • Patients should limit alcohol consumption when using sildenafil.
  • It is recommended to consult a doctor if ED persists despite medication.
  • Sildenafil can be used as part of a comprehensive ED treatment plan.
  • The medication should be taken approximately an hour before planned activity.
  • Some patients experience no side effects at prescribed doses.
  • Always confirm that sildenafil is stored properly to maintain efficacy.
  • Report any unusual symptoms, such as chest pain or vision loss, immediately.

The dosage is based on your medical condition, response to treatment, and other medications you may be taking.

Product Dosage Quantity + Bonus Price
Kamagra Soft Tabs100mg84 + 4 Pills233.05€ 221.95€
Kamagra Oral Jelly100mg30 + 5 Sachets136.20€ 129.71€
Viagra Generic150mg60 + 4 Pills111.25€ 105.95€
Viagra Generic50mg180 + 8 Pills158.82€ 151.26€
Kamagra Polo100mg180 + 8 Pills446.52€ 425.26€
Kamagra Soft Tabs100mg12 Pills57.55€ 54.81€
Viagra Generic150mg360 + 10 Pills423.48€ 403.31€
Viagra Generic100mg270 + 10 Pills270.47€ 257.59€
Viagra Generic50mg30 + 4 Pills54.26€ 51.68€
Viagra Generic150mg120 + 8 Pills177.58€ 169.12€
Kamagra Polo100mg20 Pills83.56€ 79.58€
Viagra Generic150mg20 Pills55.02€ 52.40€

Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Tell your doctor if your condition does not get better.

Dosage And Administration

Treatments for erectile dysfunction are big business, and online scams abound. If you do buy medicines over the internet: Check to see if an online pharmacy is legitimate. Never order medicines from an online pharmacy that doesn't list its phone number and physical address, has prices that seem too good to be true, or tells you that no prescription is needed. Also stay away from ones that don't have a licensed pharmacist on staff to answer your questions. Some illegal businesses sell fake versions of real medicines, which can be dangerous or might not work.

Does sildenafil interact with foods or drinks?

In the United States, the National Association of Boards of Pharmacy can tell you whether an online pharmacy is licensed and in good standing. If you live in another country, check to see if pharmacy association or regulation agencies offer services like these. Make sure you get the right prescription and dose. When you order medicines and when you receive them in the mail, make sure they're the exact dose and type prescribed by your doctor or other health care professional. The dose is the amount of medicine you take. 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. To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Condition Effect Notes
Pulmonary Arterial Hypertension Vasodilation benefits Under medical supervision
Raynaud’s Phenomenon Improved blood flow Off-label, consult specialist
Altitude Sickness Potential blood flow enhancement Less proven, caution advised

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.

Brand Name Manufacturer Price Range (per pill) Availability Notes
Viagra Pfizer $10 - $30 Widely available Most popular brand
Kamagra Ajanta Pharma $2 - $8 Online, some stores Cheaper alternative
Sildenafil Citrate Generic $1 - $5 Online, pharmacies Generic form available

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. 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. Rarely, a sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness, may occur.

UK DOCTORS AND CLINICIANS

They include dutasteride (Avodart, Jalyn) and finasteride (Propecia, Proscar). Medicines that block an enzyme called CYP3A4. Oral medicine for ED also might not be safe or work well if you have: Very low blood pressure, called hypotension, or uncontrolled high blood pressure, called hypertension. Kidney disease that needs to be treated with dialysis. These include a heart attack, stroke or a serious heart rhythm disorder in the past six months.

Total Prescriptions and Patients Per Year (2014 - 2023)

An inherited eye disease that affects the retina. Side effects of oral ED medicines are often mild. Visual changes, such as blue tinge to vision, sensitivity to light or blurred sight. Rarely, more-serious side effects can happen, including: Some people have suddenly lost some of their hearing or vision after taking one of these medicines. But it isn't clear whether these side effects were caused by the medicine or by health conditions that the people already had.

Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:

Get medical care right away if you take oral ED medicine and have sudden loss of hearing or vision. An erection that doesn't go away on its own. Called priapism, this rare condition can be painful. You need to get treatment for it as soon as possible to help prevent damage to your penis. If you have an erection that lasts more than four hours, call your care team right away. Stop taking sildenafil and get medical help right away if these effects occur.

Common Side Effects of Sildenafil

Even if you are not producing sperm, you could still be fertile and conceive. Medicines that you take by mouth are called oral medicines. They're often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction (ED). Oral medicines for ED usually work well and cause few side effects. The four main medicines taken by mouth for erectile dysfunction are: They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide.

Cessation and Adverse Effects of Treatment

This boosts blood flow and helps you get an erection from sexual activity. Each oral medicine for ED has a slightly different chemical makeup. These small differences affect the way each medication works, such as how quickly it takes effect and wears off, and the possible side effects. Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. This medicine works best when you take it on an empty stomach an hour before sex.

Are there reviews from people who had side effects with 50-mg or 100-mg sildenafil tablets?

The body takes longer to absorb it after a high-fat meal or alcohol. Its effects often last for 4 to 5 hours. It might work longer if you have mild to moderate erectile dysfunction. This medicine also works best when you take it an hour before sex on an empty stomach. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. 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.

Form Description Advantages
Tablets Standard pill Easy to dose, portable
Orally Disintegrating Tablets Dissolves on tongue No water needed, discreet
Liquid Sildenafil solution Easier for those with swallowing issues
Topical Gel External application (experimental) Potential local effects

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. 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 can sometimes cause flushing and nasal congestion.
  • It is not a cure for erectile dysfunction, only a treatment option.
  • Psychological factors can also affect erectile performance alongside medication.
  • Sildenafil may sometimes interact with foods that contain high fat content.
  • Regular exercise and stress management can complement treatment with sildenafil.
  • The medication should be stored safely out of children's reach.
  • Reporting side effects to a healthcare provider is important for safety.
  • Sildenafil is typically started at a low dose, gradually increased if needed.
  • It is important to follow the prescribed timing for medication intake.
  • Discontinuing sildenafil should be discussed with a healthcare professional.

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.

Further information

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 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. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (such as heart attack or life-threatening irregular heartbeat in the past 6 months, chest pain/angina, heart failure) penis conditions (such as angulation, fibrosis/scarring, Peyronie's disease) conditions that may increase the risk of priapism (such as sickle cell anemia, leukemia, multiple myeloma) eye problems (such as retinitis pigmentosa, sudden decreased vision, NAION) This drug may make you dizzy or cause vision problems.

What other drugs will affect sildenafil?

Vardenafil usually works for 4 to 5 hours. Its effects might last longer if you have mild to moderate ED. A newer form of the medicine that dissolves on the tongue might work faster than the pill that you swallow. This medication is taken with or without food an hour before sex. It works for up to 36 hours.

Common Adverse Effects

You can take it in a small dose daily or in a larger dose as needed. You can take this medicine with or without food 30 minutes before sex, depending on the dose. It lasts 4 to 5 hours, or longer if you have mild to moderate ED. These medicines all work well for ED. When choosing one, tell your doctor or other health care professional what your preferences are, such as cost, ease of use, how long the drug's effects last and side effects.

Less common

Generic versions of sildenafil, vardenafil and tadalafil are available. Check with your health care team before you take any medicine for erectile dysfunction. Oral ED medicines might not work or might be dangerous if you also take any of the following: Often, these are prescribed for chest pain called angina. Some examples of nitrates are nitroglycerin (Nitro-Dur, Nitrostat, others), isosorbide mononitrate (Monoket) and isosorbide dinitrate (Bidil). These are commonly prescribed for an enlarged prostate or male pattern baldness.