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. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. 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:
Abdominal or stomach pain
black, tarry stools
fever with or without chills
itching or rash
loss of appetite
painful or difficult urination
shakiness and unsteady walk
shakiness in the legs, arms, hands, or feet
sores, ulcers, or white spots on the lips or in the mouth
unpleasant breath odor
unsteadiness, trembling, or other problems with muscle control or coordination
unusual bleeding or bruising
unusual tiredness or weakness
vomiting of blood
yellow eyes or skin
Incidence not known
confusion about identity, place, and time
cough or hoarseness
decreased awareness or responsiveness
false or unusual sense of well-being
general feeling of tiredness or weakness
loss of bladder control
loss of memory
lower back or side pain
problems with memory
unusual excitement, nervousness, restlessness, or irritability
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
change in consciousness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
loss of consciousness
loss of strength or energy
muscle pain or weakness
unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
unusual weak feeling
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:
Decreased interest in sexual intercourse
feeling of constant movement of self or surroundings
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
rash with flat lesions or small raised lesions on the skin
sensation of spinning
Incidence not known
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.