• U.S. Brand Names: Revatio®;Viagra®
• Canadian Brand Names: ratio-Sildenafil R;Revatio®;Viagra®
• Mexican Brand Names: Viagra
• Pharmacologic Category: Phosphodiesterase-5 Enzyme Inhibitor

• This medicine is used to treat impotence.
• This medicine is used to treat high pressure in the lungs.
• Sildenafil improves response to stimulation.
• It relaxes lung vessels.

How to take

• Take this medicine with or without food. Take with food if it causes an upset stomach.
• Viagra®
• Take this medicine 30 minutes to 4 hours before sexual intercourse.
• Injection:
• This medicine is given as a shot into a vein.

Missed Dose

• Revatio®
• Take a missed dose as soon as possible.
• If it is almost time for the next dose, skip the missed dose and return to your regular schedule.
• Do not take a double dose or extra doses.
• Do not change dose or stop medicine. Talk with healthcare provider.
• Viagra®
• Many times this medicine is taken on an as needed basis.

Storage

• Store at room temperature.
• Protect from moisture. Do not store in a bathroom or kitchen.
• The injection will be given to you in a healthcare setting. You will not store it at home.

Warnings

• This medicine does not mix well with some medicines. Serious reactions may occur. Check all medicines with healthcare provider.

Avoid

• If you have an allergy to sildenafil or any other part of this medicine.
• Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.
• If you use drugs called "poppers" like amyl nitrite and butyl nitrite.
• If you have been told not to have sex by healthcare provider.

Precautions

• If you have bleeding problems, talk with healthcare provider.
• If you have heart disease, talk with healthcare provider.
• If you have had a stroke within the last 6 months, talk with healthcare provider.
• If you have ulcer disease, talk with healthcare provider.
• Check medicines with healthcare provider. This medicine may not mix well with other medicines.
• Do not take with other medicines used to treat change in sexual ability or desire.
• Avoid grapefruit and grapefruit juice.
• Avoid alcohol (includes wine, beer, and liquor).
• To protect against sexually-transmitted diseases, use a latex condom.
• Tell healthcare provider if you are pregnant or plan on getting pregnant.
• Tell healthcare provider if you are breast-feeding.

Side Effects

• Flushing. Wearing layers of clothes or summer clothes and cool environment may help.
• Low blood pressure.
• Headache.
• Belly pain or heartburn.
• Nasal congestion.
• Vision changes may rarely occur.

Monitoring

• Change in condition being treated. Is it better, worse, or about the same?
• Follow up with healthcare provider.

Contact a healthcare provider

• If you suspect an overdose, call your local poison control center or emergency department immediately.
• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.
• Penile erection that lasts longer than 4 hours.
• Difficulty breathing.
• Chest pain or pressure or fast heartbeat.
• Severe dizziness or passing out.
• Sudden change or loss of vision.
• Change in hearing.
• Any rash.
• No improvement in condition or feeling worse.

General Statements

• If you have a life-threatening allergy, wear allergy identification at all times.
• Do not share your medicine with others and do not take anyone else's medicine.
• Keep all medicine out of the reach of children and pets.
• Most medicines can be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
• In Canada return any unused drugs back to the pharmacy. Also, visit http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/med/disposal-defaire-eng.php#th for more facts about the right way to get rid of unused drugs.
• Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).
• Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or in Canada to Health Canada's Canada Vigilance Program at 1-866-234-2345.
• Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.

• Copyright © 1978-2010 Lexi-Comp Inc. All rights reserved.