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Sildenafil > sildenafil citrate tables


The dose is usually taken 1 hour before sexual activity. You should not take the dose more than once per day. Do not take your medication more often than directed. Talk to your care team about the use of this medication in children.

This medication is not used in children for this condition. Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

Proper Use

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and only take the next dose. Ask your healthcare provider if you are unsure what to do after a missed dose. This survey is being conducted by the WebMD marketing sciences department. Sildenafil is a treatment for erectile dysfunction.

Serious Adverse Effects

It works by increasing blood flow to your penis. The brand name for this medication is Viagra®. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Do not take this medication with any of the following: Nitrates, such as amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin This medication may also interact with the following: Other medications may affect the way this medication works.

Product Dosage Quantity + Bonus Price
Kamagra100mg32 Pills121.24€ 115.47€
Viagra Generic100mg120 + 6 Pills149.50€ 142.38€
Viagra Generic25mg90 + 6 Pills105.03€ 100.03€
Viagra Generic200mg30 + 2 Pills83.07€ 79.11€
Viagra Generic100mg20 Pills45.58€ 43.41€
Viagra Generic200mg10 Pills40.96€ 39.01€
Viagra Generic100mg180 + 8 Pills199.37€ 189.88€
Kamagra Soft Tabs100mg180 + 8 Pills425.45€ 405.19€
Kamagra Oral Jelly100mg110 + 9 Sachets334.87€ 318.92€
Viagra Generic200mg360 + 10 Pills481.98€ 459.03€
Viagra Generic50mg60 + 4 Pills83.93€ 79.93€
Viagra Generic25mg180 + 6 Pills154.93€ 147.55€
Viagra Generic150mg10 Pills36.73€ 34.98€
Viagra Generic150mg60 + 4 Pills111.25€ 105.95€
Viagra Generic100mg360 + 10 Pills330.21€ 314.49€
Viagra Generic150mg90 + 6 Pills147.18€ 140.17€
Kamagra Oral Jelly100mg63 + 7 Sachets224.18€ 213.50€

Talk with your care team about all of the medications you take. They may suggest changes to your treatment plan to lower the risk of side effects and to make sure your medications work as intended. This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use.

7.5 Alcohol

Tell your healthcare sildenafil spray provider if you are breastfeeding or plan to breastfeed. Your healthcare provider will advise you if you should take sildenafil while breastfeeding. If you take sildenafil after you eat a high-fat meal, such as a burger and fries, it may take longer to start working. Your healthcare provider may recommend limiting or avoiding grapefruit while taking sildenafil. Grapefruit or grapefruit juice can raise sildenafil levels in your body, which can increase the risk of side effects.

Study 2: Sildenafil citrate with Doxazosin

There are no known interactions between sildenafil and alcohol. Always tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. In particular, make sure that you discuss if you are using any of the following before taking sildenafil. Tell your healthcare provider about all medicines that you take or have recently taken. This may not be a complete list of medicines that can interact with sildenafil.

Dosage for ED

If you or someone else has used too much sildenafil, get medical help right away, call 911, or contact a Poison Control center at 800-222-1222. For this use, sildenafil is used only when needed. Take it as your healthcare provider recommends, which is usually between 30 minutes to four hours before planned sexual activity. Do not take double or extra doses. For this use, take sildenafil as your healthcare provider recommends, which is usually three times a day. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine. Visit sildenafil citrate 100 mg your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse. Tell your care team right away if you have any change in your eyesight or hearing. This medication may affect your coordination, reaction time, or judgment.

Related/similar drugs

SILDENAFIL (sil DEN a fil) treats erectile dysfunction (ED). It sildenafil 12 5 mg works by increasing blood flow to the penis, which helps to maintain an erection. This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions. They need to know if you have any of these conditions: History of blood diseases, such as sickle cell anemia or leukemia Stomach ulcers, other stomach or intestine problems An unusual or allergic reaction to sildenafil, other medications, foods, dyes, or preservatives Take this medication by mouth with a glass of water. Follow the directions on the prescription label. Do not drive or operate machinery until you know how this medication affects you. Sit up or stand slowly to reduce the risk of dizzy or fainting spells. Drinking alcohol with this medication can increase the risk of these side effects.

Indication Description Approved Dose Additional Notes
Erectile Dysfunction (ED) Improves erectile response in men 50 mg as needed Taken 30 min to 1 hour before activity
Pulmonary Arterial Hypertension Vasodilation of pulmonary vasculature 20 mg TID Used with other PAH therapies
Raynaud's Phenomenon Relief from vasospasms Off-label Experimental use

Contact your care team right away if you have an erection that lasts longer than 4 hours or if it becomes painful. This may be a sign of a serious problem and must be treated right away to prevent permanent damage.

Point Explanation Importance
Take on an empty stomach or after light meal Food, especially high-fat meals, delays onset Ensures faster effectiveness
Do not exceed recommended dose Overdose increases side effects and risks Safety
Timing of administration 30-60 minutes before sexual activity Optimal results
Potential side effects Headache, flushing, vision changes Recognize and report unusual effects
Avoid alcohol consumption Can decrease efficacy and increase side effects Safety

If you experience symptoms of nausea, dizziness, chest pain or arm pain upon initiation of sexual activity after taking this medication, you should refrain from further activity and call your care team as soon as possible.

Using this medication does not protect you or your partner against HIV or other sexually transmitted infections (STIs). Side effects that you should report to your care team as soon as possible: Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat Heart attack—pain or tightness in the chest, shoulders, arms, or jaw, nausea, shortness of breath, cold or clammy skin, feeling faint or lightheaded Heart rhythm changes—fast or irregular heartbeat, dizziness, feeling faint or lightheaded, chest pain, trouble breathing Low blood pressure—dizziness, feeling faint or lightheaded, blurry vision Stroke—sudden numbness or weakness of the face, arm, or leg, trouble speaking, confusion, trouble walking, loss of balance or coordination, dizziness, severe headache, change in vision Sudden vision loss in one or both eyes Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome): This list may not describe all possible side effects. Keep out of reach of children and pets. Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medication after the expiration date. It may not cover all possible information.

If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider. Sign up for our Health Essentials emails for expert guidance on nutrition, fitness, sleep, skin care and more. Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.

Before taking this medicine

Talk to your healthcare provider to see if your heart is strong enough for sex. If you feel chest pain, dizziness, or nausea during sex, stop and contact your healthcare provider right away. Sildenafil does not protect against sexually transmitted infections, including HIV. Sildenafil belongs to a group of medicines, known as phosphodiesterase-5 (PDE-5) inhibitors, which are used to treat erectile dysfunction or pulmonary arterial hypertension. You should not take more than one PDE-5 inhibitor medicine.

More common

Medicines in this group include avanafil (Stendra), sildenafil (Viagra, Revatio, and others), tadalafil (Cialis and others), and vardenafil (Levitra, Staxyn). Use an accurate measuring device to measure your dose of sildenafil oral liquid. A household spoon is not an accurate measuring device and may cause you to take the wrong dose. Ask your pharmacist to recommend an appropriate measuring device. Tell your healthcare provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.

What dose should be taken?

This will help them determine if sildenafil is right for you. In particular, make sure that you discuss any of the following. Tell your healthcare provider if you have any of the following. Heart problems, such as heart rhythm problems, chest pain, or heart failure Heart attack, stroke, or heart surgery within the past six months High blood pressure that is still too high despite taking medicines for it Peyronie's disease, or a penis with an abnormal curve or shape An erection lasting longer than four hours A blood disorder, such as sickle cell anemia An inherited eye disease called retinitis pigmentosa Vision loss, or a problem with the nerve between your eyes and brain (optic nerve) Health conditions or factors that raise the risk of optic nerve problems, such as diabetes, high cholesterol, smoking, being older than 50, or having a “crowded disc,” which is something an eye doctor may see in an eye exam Pulmonary veno-occlusive disease, a condition where blood vessels in the lungs are blocked It is not known if or how sildenafil could affect pregnancy or harm an unborn baby. Tell your healthcare provider if you are or plan to become pregnant. take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas® (riociguat) for pulmonary hypertension.

Medication Class Interaction Type Effect Clinical Significance
Nitrates Additive hypotensive effect Severe hypotension Contraindicated
Alpha-blockers Enhanced hypotension Blood pressure drop Use with caution
CYP3A4 inhibitors Increased sildenafil levels Prolonged or intensified side effects Dose adjustment may be needed
Protease inhibitors Elevated sildenafil levels Increased adverse effects Monitoring required

Your blood pressure could drop to an unsafe level are allergic to sildenafil, as contained in VIAGRA and Revatio®, or any of the ingredients in VIAGRA Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. If it is not treated right away, priapism can permanently damage your penis sudden vision loss in one or both eyes. Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking VIAGRA and contact a doctor right away Before you take VIAGRA, tell your healthcare provider if you: have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure have had heart surgery within the last 6 months have low blood pressure, or high blood pressure that is not controlled have had an erection that lasted for more than 4 hours have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia have retinitis pigmentosa, a rare genetic (runs in families) eye disease have ever had severe vision loss, including an eye problem called NAION have kidney problems or are having kidney dialysis Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

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