Instructions

This medicine may be taken with or without food.

Try to avoid taking the medicine at bedtime.

Space doses at least 4 hours apart unless instructed otherwise.

Take the medicine first thing in the morning.

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

Please ask your doctor, nurse, or pharmacist how to discard unused medicines safely.

If you forget to take a dose on time, take it as soon as you remember. If it is almost time for the next dose, do not take the missed dose. Return to your normal schedule. Do not take 2 doses at one time.

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.

Tell your doctor if symptoms do not get better or if they get worse.

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

Cautions

This medicine can be habit-forming. If you use this medicine regularly for a long time, it can lead to withdrawal symptoms when you stop. Please use this medicine only as directed.

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

This medicine is associated with an increased risk of serious heart problems, heart attack, and stroke. Please speak with your doctor about the risks and benefits of using this medicine. Contact your doctor immediately if you experience chest pain or difficulty breathing.

Do not use the medication any more than instructed.

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.

Family should check on the patient often. Call the doctor if patient becomes more depressed, has thoughts of suicide, or shows changes in behavior.

Do not breastfeed while on this medicine. This medicine can pass through breast milk to the baby.

During pregnancy, this medicine should be used only when clearly needed. Talk to your doctor about the risks and benefits.

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

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

Some patients have serious side effects from this medicine. Ask your pharmacist to show you the information from the Food and Drug Administration (FDA) and discuss it with you.

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.

• agitated feeling or trouble sleeping
• decreased appetite
• diarrhea
• dizziness
• dry mouth
• headaches
• high blood pressure
• nervousness
• stomach upset or abdominal pain
• weight loss

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

• chest or jaw pain
• depression or feeling sad
• severe, watery or bloody diarrhea
• swelling of the legs, feet, and hands
• fainting
• fever
• pale, blue or cold fingers, toes or nails
• cold hands or feet
• numbness or tingling in hands and feet
• sores or blisters on hands or feet
• hallucinations (unusual thoughts, seeing or hearing things that are not real)
• severe or persistent headache
• fast or irregular heart beats
• mood changes
• uncontrollable movement of face, tongue, arms or legs
• seizures
• problems with sexual functions or desire
• shortness of breath
• change in skin color
• skin numbness
• symptoms of stroke (such as one-sided weakness, slurred speech, confusion)
• suicidal thoughts
• sweating
• unusual or unexplained tiredness or weakness
• blurring or changes of vision
• severe or persistent vomiting

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.