With any medication, there are risks and benefits. Even if the medication is working, you may experience some unwanted side effects.
Contact your doctor immediately if you experience any of the following:
- Seizures
- Allergic reactions
The following side effects may get better over time as your body gets used to the medication. Let your doctor know immediately if you continue to experience these symptoms or if they worsen over time.
Common side effects
- Drowsiness (up to 63%)
- Dizziness (up to 15%)
- Weakness (up to 15%)
- Nausea (up to 12%)
- Confusion (up to 11%)
Other side effects
- Headache
- General feeling of low energy
- Constipation
- More frequent urination
- Low blood pressure
- Trouble sleeping
- Ovarian cyst (fluid filled sac on your ovary)
The following side effects have also been reported:
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Less common or rare
Bloody or dark urine
chest pain
fainting
mental depression or other mood changes
ringing or buzzing in the ears
seeing or hearing things that are not there
skin rash or itching
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Blurred vision
convulsions
difficult or troubled breathing
dizziness
drowsiness
irregular, fast or slow, or shallow breathing
lightheadedness
loss of strength or energy
muscle pain or weakness
pale or blue lips, fingernails, or skin
sleepiness or unusual drowsiness
unusual weak feeling
unusually slow or troubled breathing
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
Confusion
constipation
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
headache
increased need to urinate
nausea
passing urine more often
sweating
trouble sleeping
unusual tiredness or weakness
Less common or rare
Abdominal or stomach pain or discomfort
clumsiness, unsteadiness, trembling, or other problems with muscle control
diarrhea
false sense of well-being
loss of appetite
muscle or joint pain
numbness or tingling in the hands or feet
pounding heartbeat
slurred speech or other speech problems
stuffy nose
swelling of the ankles
unexplained muscle stiffness
unusual excitement
weight gain
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.