12. CLINICAL PHARMACOLOGY

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. 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.

Highlights of Prescribing Information

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.

Drugs Affecting Gastric Acidity

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. 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. You may report side effects to Health Canada at 1-866-234-2345.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	100mg	180 + 8 Pills	199.37€ 189.88€	Buy
Viagra Generic	25mg	30 + 4 Pills	47.97€ 45.69€	Buy
Viagra Generic	200mg	360 + 10 Pills	481.98€ 459.03€	Buy
Kamagra Oral Jelly	100mg	110 + 9 Sachets	334.87€ 318.92€	Buy
Kamagra	100mg	32 Pills	121.24€ 115.47€	Buy
Viagra Generic	100mg	360 + 10 Pills	330.21€ 314.49€	Buy
Viagra Generic	50mg	30 + 4 Pills	54.26€ 51.68€	Buy
Viagra Generic	100mg	30 + 4 Pills	60.91€ 58.01€	Buy
Kamagra Polo	100mg	84 + 4 Pills	244.49€ 232.85€	Buy
Viagra Generic	25mg	10 Pills	25.19€ 23.99€	Buy
Kamagra Soft Tabs	100mg	272 + 12 Pills	593.42€ 565.16€	Buy
Viagra Generic	200mg	10 Pills	40.96€ 39.01€	Buy
Viagra Generic	25mg	60 + 4 Pills	71.99€ 68.56€	Buy
Viagra Generic	25mg	20 Pills	37.74€ 35.94€	Buy
Kamagra	100mg	20 Pills	86.09€ 81.99€	Buy

Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. 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) other lung conditions (such as pulmonary veno-occlusive disease) This drug may make you dizzy or cause vision problems. Alcohol or marijuana (cannabis) can make you more dizzy.

8.6 Patients with Hepatic Impairment

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.

Take it on an empty stomach

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. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Talk to your doctor if you are using marijuana (cannabis).

• Alcohol can interact with sildenafil, reducing its effectiveness and increasing side effects.
• Avoid alcohol consumption when planning to use sildenafil.
• Always inform your doctor about alcohol use prior to prescription.

Before having surgery, tell your doctor or dentist oral sildenafil about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). During pregnancy, sildenafil should be used only when clearly needed. Since high blood pressure in the lungs is a serious condition that can harm both a pregnant woman and her unborn baby, do not stop taking this medication unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, discuss with your doctor right away the benefits and risks of using this medication during pregnancy. Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist.

• 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.

Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug are: Sildenafil can cause a serious drop in your blood pressure when used with nitrates. A serious drop in blood pressure can lead to dizziness, fainting, and rarely heart attack or stroke. Do not use sildenafil with any of the following: certain drugs used to treat chest pain/angina (nitrates such as nitroglycerin, isosorbide) recreational drugs called "poppers" containing amyl or butyl nitrite If you are also taking an alpha blocker medication (such as doxazosin, tamsulosin) to treat an enlarged prostate/BPH or high blood pressure, your blood pressure may get too low which can lead to dizziness or fainting. Your doctor may adjust your medications to minimize your risk of low blood pressure. Other medications can affect the removal of sildenafil from your body, which may affect how sildenafil works. Do not take this medication with any other product that contains sildenafil or other similar medications for erectile dysfunction-ED or pulmonary hypertension (such as tadalafil, vardenafil). If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away.

Do you take the different doses in the same way?

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. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669.

Sildenafil Dosage for Erectile Dysfunction

To treat high blood pressure in the lungs, take this 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 sildenafil citrate tablets 150 mg based on weight. Do not increase your dose or take this drug more often than prescribed.

How it works

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. Symptoms of overdose may include: severe dizziness, fainting, painful/prolonged erection. Do not share this medication with others. Lab and/or medical tests (such as eye exams, blood pressure) may be done while you are taking this medication.

• 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.

If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time.

What doses does sildenafil come in?

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. Do not double the dose to catch up. Store at room temperature away from light and moisture. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

Order an ED medication NowPatient

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.

Sildenafil Oral Film for ED

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?