This medicine is available only with your doctor's prescription. This product is available in the following dosage forms: In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines.

Other uses for this medicine

Sildenafil is also used in both men and women to treat the symptoms of pulmonary arterial hypertension. This is a type of high blood pressure that occurs between the heart and the lungs. When hypertension occurs in the lungs, the heart must work harder to pump enough blood through the lungs. Sildenafil works on the PDE5 enzyme in the lungs to relax the blood vessels. This will increase the supply of blood to the lungs and reduce the workload of the heart. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals.

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For non-prescription products, read the label or package ingredients carefully. Appropriate studies have not been performed on the relationship of age to the effects of sildenafil in children younger than 1 year of age. Safety and efficacy have not been established. Sildenafil should never be used in children for erectile dysfunction. In general, sildenafil should not be used for pulmonary arterial hypertension in children, especially for chronic use. Use of sildenafil oral film is not indicated for use in the pediatric population.

What should I do if I forget a dose?

You should carry the list with you in case of emergencies. It's important to take sildenafil as advised by a doctor or pharmacist. Sildenafil tablets for erectile dysfunction come in different strengths ranging from 25mg to 100mg. The usual dose is 50mg, when you need it. Do not take it more than once a day.

Before taking sildenafil,

The dose can be increased to 100mg or decreased to 25mg depending on its effect. Take sildenafil up to 4 hours before you want to have sex. For sildenafil to work properly, you'll need to be sexually excited. Sildenafil tablets for pulmonary hypertension come in 10mg and 20mg strengths. The usual adult dose is 20mg taken 3 times a day. Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of sildenafil in the elderly. However, elderly patients are more likely to have age-related liver, kidney, or heart problems, which may require caution and an adjustment in the dose for patients receiving sildenafil. There are no adequate studies in women for determining infant risk when using this medication during breastfeeding.

  • The medication can be part of a broader ED treatment plan.
  • Viagra can be effective even with underlying health conditions.
  • Follow-up with your healthcare provider for optimal results.
  • Discontinue use and seek medical advice if adverse effects occur.

Weigh the potential benefits against the potential risks before taking this medication while breastfeeding. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Using viagra red this medicine with any of the following medicines is usually not recommended, but may be required in some cases.

Before Using

The penis is one of the areas where this enzyme works. Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. When a man is sexually stimulated, his body's normal response is to increase blood flow to his penis to produce an erection. By controlling the enzyme, sildenafil helps to maintain an erection after the penis is stroked. Without physical action to the penis, such as that occurring during sexual intercourse, sildenafil will not work to cause an erection. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you.

  • Viagra does not increase libido; it improves response.
  • The medication is available by prescription only.
  • Generic versions of 50mg Viagra are available.
  • Always buy from reputable pharmacies to avoid counterfeit.

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur.

What special precautions should I follow?

If you have pulmonary hypertension and you forget to take a dose of sildenafil, take it as soon as you remember unless it's nearly time for your next dose. In generic viagra sildenafil citrate 50 mg this case, just leave out the missed dose and take your next dose at the usual time. Never take 2 doses at the same time. Never take an extra dose to make up for a forgotten one. If you often forget doses, it may help to set an alarm to remind you.

Sildenafil may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

You could also ask your pharmacist for advice on other ways to help you remember to take your medicine. Taking too much sildenafil can cause unpleasant side effects. Talk to your doctor if you take too much sildenafil and you're worried about any of these side effects: Sildenafil is used to treat erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Using this medicine with any of the following may cause an increased risk of certain side effects but may be unavoidable in some cases.

Country Legal Status Notes
United States Prescription required Controlled substance
United Kingdom Prescription needed Prescription-only medicine
Canada Prescription required Classified as prescription drug
India Available OTC in some states Varies by region
Australia Prescription required Schedule 4 drug

If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco. The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially: Abnormal penis, including a curved penis or birth defects of the penis—Chance of problems occurring may be increased and this medicine should be used with caution in these patients. Arrhythmia (irregular heartbeat, within the last 6 months) or Blood vessel problems (eg, aortic stenosis, idiopathic subaortic stenosis) or Heart attack (within the last 6 months) or Retinitis pigmentosa (an inherited eye disorder) or Stroke (within the last 6 months)—Should not be used in patients with these conditions. Crowded disc or low cup to disc ratio in the eye (an eye disorder) or Hyperlipidemia (high fats in the blood) or Non-arteritic anterior ischemic optic neuropathy or NAION (serious eye condition), history of or Retinitis pigmentosa (an inherited eye disorder) or Smoking—May increase the chance for a serious side effect in the eye called NAION. Stomach ulcer, or history of or—Chance of problems occurring may be increased. It is not known if the medicine is safe for use in these patients. The effects may be increased because of slower removal of the medicine from the body. Sickle-cell anemia (blood disorder)—Sildenafil should be used with caution in these patients as problems with prolonged erection of the penis may occur.

If you forget to take it

Dispose of unneeded medications in a way so that pets, children, and other people cannot take them. Do not flush this medication down the toilet. Talk to your pharmacist about take-back programs in your community. Visit the FDA's Safe Disposal of Medicines website for more information. In case of overdose, call the poison control helpline at 1-800-222-1222.

Other Interactions

Information is also available online at If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911. Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription. Keep a written list of all of the prescription and nonprescription (over-the-counter) medicines, vitamins, minerals, and dietary supplements you are taking. Bring this list with you each time you visit a doctor or if you are admitted to the hospital. Pulmonary arterial hypertension (high blood pressure in the lungs) or Pulmonary veno-occlusive disease or PVOD (a type of lung disease)—Use with caution. Use sildenafil exactly as directed by your doctor. Do not use more of it and do not use it more often than your doctor ordered. If too much is used, the chance of side effects is increased. This medicine comes with a patient information leaflet. Read and follow these instructions carefully before you start using sildenafil and each time you get a refill of your medicine.

How to take liquid

Doses for children can range from 10mg to 20mg taken 3 times a day, depending on their weight. Do not take it more than 3 times a day. Swallow tablets whole with a drink of water or juice (but not grapefruit juice). For erectile dysfunction, it's best to take sildenafil on an empty stomach. It may take longer to work if you take it with food.

Other Medical Problems

If you or your child are taking sildenafil as a liquid, 1ml is usually the same as taking a 10mg tablet, but it's important to always check the medicine label. Liquid sildenafil will usually be made up for you by your pharmacist. The medicine will come with a plastic syringe or spoon to help you take the right amount. If you do not have a plastic syringe or spoon, ask your pharmacist for one. Do not use a kitchen teaspoon as it will not measure the right amount. Ask your doctor if you have any questions. You may take this medicine with or without food.

  • The onset of Viagra usually occurs within 30 minutes.
  • Alcohol may reduce its effectiveness.
  • Viagra is not an aphrodisiac; it requires sexual arousal.
  • Seek medical advice if no effect occurs after 4 hours.

Place the film on top of your tongue. It will dissolve in your mouth and can be swallowed with saliva without using water or other liquids.

  • Extensive research supports its use for ED.
  • Studies have shown benefits in diabetic patients.
  • Research continues into new therapeutic uses.
  • It was originally researched for hypertension.
  • Scientific evidence supports its efficacy profile.

Shake the bottle well for at least 10 seconds before each use. Remove the cap by pushing it down and twisting it counter-clockwise. Push the plunger of the syringe, then insert the tip into the bottle while holding the bottle upright on a flat surface.