Instructions

Let the medicine dissolve on your tongue and then swallow.

Do not chew or swallow it whole.

Keep the medicine in its original container.

Do not drink any liquids as you take this medicine.

Take the medicine 30 to 60 minutes before sexual activity.

Peel back foil, carefully remove tablet using dry hands. Do not push the tablet through the foil.

Do not rinse your mouth after using this medicine.

Store at room temperature away from heat, light, and moisture. Do not keep in the bathroom.

Avoid grapefruit and grapefruit juice while on this medicine.

Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.

Keep all appointments for medical exams and tests while on this medicine.

Cautions

Do not change brands, dosage forms or strengths without consulting your doctor or pharmacist. Doing so can result in serious side effects.

This medicine is not approved for use by women.

Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.

Do not use the medication any more than instructed.

This medicine may cause dizziness or fainting. Do not stand or sit up quickly.

Your ability to stay alert or to react quickly may be impaired by this medicine. Do not drive or operate machinery until you know how this medicine will affect you.

Please check with your doctor before drinking alcohol while on this medicine.

Do not take any medicine containing nitrates while on this medicine.

This medicine may contain aspartame (phenylalanine). Check with your doctor or pharmacist if you have a medical condition that requires you to limit or avoid this ingredient.

If you have had a heart attack or a stroke within the past 6 months, talk to your doctor before using this medicine.

If you have a painful erection or an erection for more than 4 hours, seek medical care right away.

Call your doctor right away if you get chest pain, trouble seeing, hearing problems, ringing in the ears, memory loss, or severe dizziness.

Do not share this medicine with anyone who has not been prescribed this medicine.

Side Effects

The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.

• dizziness or lightheadedness
• feeling of heat or flushing
• headaches
• low blood pressure
• sensitivity to light
• blurring or changes of vision

Call your doctor or get medical help right away if you notice any of these more serious side effects:

• chest or jaw pain
• ear problems (ringing in the ears, hearing loss)
• fainting
• memory problems or loss
• nausea
• seizures
• sudden change or loss of vision

A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.