4 CONTRAINDICATIONS

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.

What are the side effects?

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. Stop taking sildenafil and get medical help right away if these effects occur. Get medical help right away if you have any very serious side effects, including: increased shortness of breath or trouble breathing 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. 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.

11. Sildenafil Tablets Description

These are not all the possible side effects of sildenafil tablets. For more information, ask your doctor or pharmacist. You may report side effects to FDA at 1-800-FDA-1088. Store sildenafil tablets at controlled room temperature, between 20°C to 25°C (68°F to 77°F). Keep sildenafil tablets and all medicines away from children.

Who Should NOT Take Sildenafil

Medicines are sometimes prescribed for purposes that are not in the patient leaflet. This patient leaflet summarizes the most important information about sildenafil tablets. You can ask your doctor or pharmacist for information about sildenafil tablets that is written for health professionals. For more information go to or call 1-855-361-3993. What are the ingredients in sildenafil tablets?

When and How to Take Sildenafil for Best Results

This product’s label may have been updated. For current full prescribing information, please visit This Patient Information has been approved by the U.S. Food and Drug Administration Generic name:Sildenafil 20 mg (lungs) - oral Generic name:Sildenafil 20 mg (lungs) - oral Sildenafil is used to treat high blood pressure in the lungs (pulmonary hypertension). It works by relaxing and widening the blood vessels in your lungs which allows the blood to flow more easily. Decreasing high blood pressure in the lungs allows your heart and lungs to work better and improves your ability to exercise. You may report side effects to Health Canada at 1-866-234-2345.

What other drugs will affect sildenafil?

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. 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. Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.

Side Effects

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 other strengths for erectile dysfunction-ED in men. 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.

Don’t drink too much alcohol

To treat high blood pressure in the lungs, take this 50 mg sildenafil price medication by mouth with or without food as directed by your doctor, usually 3 times a day. 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). Children's dosage is also based on weight. Do not increase your dose or take this drug more often than prescribed.

Why this range helps:

Your condition will not improve any faster, and your risk of side effects will increase. Take this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. Tell your doctor if your condition does not get better or if it gets worse. Dizziness, lightheadedness, headache, flushing, stomach upset, nosebleeds, trouble sleeping, or swollen hands/ankles/feet (edema) may occur. This product may contain inactive ingredients, which can cause allergic reactions or other problems.

• Sildenafil 20 mg is contraindicated with nitrate medications due to risk of severe hypotension.
• Patients with heart problems should consult their doctor before use.
• It’s important to disclose all medications to your healthcare provider.

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) other lung conditions (such as pulmonary veno-occlusive disease) This drug may make you dizzy or cause vision problems.

• Sildenafil 20 mg tablets should be taken about 30 to 60 minutes before sexual activity.
• It’s important not to take more than one dose in 24 hours.
• Do not crush or chew the medication; swallow it whole with water.

Alcohol or marijuana (cannabis) can make you more dizzy.

What should I do if I forget a dose?

Sildenafil tablets are not for use in children Adding sildenafil tablets to another medication used to treat PAH, does not result in improvement in your ability to exercise. Sildenafil tablets contain the same medicine as VIAGRA ® (sildenafil), which is used to treat erectile dysfunction (impotence). Do not take sildenafil tablets with VIAGRA or other PDE-5 inhibitors. Do not take sildenafil tablets if you: See “What is the most important information I should know about sildenafil tablets?” See “What is the most important information I should know about sildenafil tablets?” are allergic to sildenafil or any other ingredient in sildenafil tablets. See “What are the ingredients in sildenafil tablets?” at the end of this leaflet.

Serious Side Effects

What should I tell my doctor before taking sildenafil tablets? Tell your doctor about all of your medical conditions, including if you have heart problems such as angina (chest pain), heart failure, irregular heartbeats, or have had a heart attack have a disease called pulmonary veno-occlusive disease (PVOD) have high or low blood pressure or blood circulation problems have an eye problem called retinitis pigmentosa have or had loss of sight in one or both eyes have any problem with the shape of your penis or Peyronie’s disease have any blood cell problems such as sickle cell anemia have a stomach ulcer or any bleeding problems are pregnant or planning to become pregnant. It is not known if sildenafil tablets could harm your unborn baby. It is not known if sildenafil citrate passes into your breast milk or if it could harm your baby. Tell your doctor about all of the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal products.

FAQs About Sildenafil Dosage

The doses of some of your medicines may need to be adjusted while you take sildenafil tablets. Especially tell your doctor if you take See “What is the most important information I should know about sildenafil tablets?” See “What is the most important information I should know about sildenafil tablets?” Ritonavir (Norvir ®) or other medicines used to treat HIV infection Keep a list of your medicines and show it to your doctor and pharmacist when you get a new medicine. Take sildenafil tablets exactly as your doctor tells you. Sildenafil citrate may be prescribed to you as Take sildenafil tablets 3 times a day about 4 to 6 hours apart. Take sildenafil tablets at the same times every day. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely.

• Sildenafil 20 mg is not intended for use by women or children.
• Keep medication out of reach of children to prevent accidental ingestion.
• Store in a cool, dry place away from direct sunlight.

Talk to your doctor if you are using marijuana (cannabis). Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Conclusion: Is Sildenafil Right for You?

If you miss a dose, take it as soon as you remember. If it is close to your next dose, skip the missed dose, and take your next dose at the regular time. Do not change your dose or stop taking sildenafil tablets on your own. If you take too much sildenafil tablets, call your doctor or go to the nearest hospital emergency room. What are the possible side effects of sildenafil tablets?

2.3 Dosage Adjustments in Specific Situations

Lie down if you feel faint or dizzy. More shortness of breath than usual may be due to your underlying medical condition. decreased eyesight or loss of sight in one or both eyes (NAION). If you notice a sudden decrease or loss of eyesight, talk to your doctor right away. It is not possible to determine whether these events are related directly to this class of oral medicines, including sildenafil tablets, or to other diseases or medicines, to other factors, or to a combination of factors.

Factors That Influence the Right Dosage for You

heart attack, stroke, irregular heartbeats, and death. Most of these happened in men who already had heart problems. If it is not treated right away, priapism can permanently damage your penis. The most common side effects with sildenafil tablets include: Nosebleed, headache, upset stomach, getting red or hot in the face (flushing), trouble sleeping, as well as fever, erection increased, respiratory infection, nausea, vomiting, bronchitis, pharyngitis, runny nose, and pneumonia in children. Tell your doctor if you have any side effect that bothers you or doesn’t go away. During pregnancy, sildenafil should be used only when clearly needed.