What should I watch for?
Tell your doctor or health care professional if your symptoms do not start to get better or if they get worse.
Do not stop taking except on your doctor's advice. You may develop a severe reaction. Your doctor will tell you how much medicine to take.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. To reduce the risk of dizzy and fainting spells, do not stand or sit up quickly, especially if you are an older patient. Alcohol may increase dizziness and drowsiness. Avoid alcoholic drinks.
If you are taking another medicine that also causes drowsiness, you may have more side effects. Give your health care provider a list of all medicines you use. Your doctor will tell you how much medicine to take. Do not take more medicine than directed. Call emergency for help if you have problems breathing or unusual sleepiness.
Common and Rare Side Effects
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:
mood or mental changes
shakiness and unsteady walk
unsteadiness, trembling, or other problems with muscle control or coordination
Incidence not known
Abdominal and muscle cramps
cough or hoarseness
difficulty in speaking
fever with or without chills
general feeling of tiredness or weakness
loss of appetite
loss of balance control
lower back or side pain
muscle trembling, jerking, or stiffness
painful or difficult urination
shakiness in the legs, arms, hands, or feet
sores, ulcers, or white spots on the lips or in the mouth
stiffness of the limbs
twisting movements of the body
unable to sleep
uncontrolled movements, especially of the face, neck, and back
unpleasant breath odor
unusual bruising or bleeding
unusual tiredness or weakness
vomiting of blood
yellow eyes or skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Change in consciousness
lack of coordination
loss of consciousness
sleepiness or unusual drowsiness
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:
Incidence not known
Decreased interest in sexual intercourse
difficulty having a bowel movement (stool)
inability to have or keep an erection
increased in sexual ability, desire, drive, or performance
increased interest in sexual intercourse
loss in sexual ability, desire, drive, or performance
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.