What should I watch for?
Tell your doctor or healthcare 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.
If you are also taking a narcotic medicine for pain or cough or 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.
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.
Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage regimens.
This medicine may cause constipation. Try to have a bowel movement at least every 2 to 3 days. If you do not have a bowel movement for 3 days, call your doctor or health care professional.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.
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:
feeling faint, dizzy, or lightheaded
feeling of warmth or heat
flushing or redness of the skin, especially on the face and neck
lower back or side pain
painful or difficult urination
Incidence not known
bloating or swelling of the face, arms, hands, lower legs, or feet
darkening of the skin
loss of appetite
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
rapid weight gain
restlessness shivering talking or acting with excitement you cannot control tightness in the chest
tingling of the hands or feet
trembling or shaking twitching
unusual weight gain or loss
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
difficult or troubled breathing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
irregular, fast, slow, or shallow breathing
pale or blue lips, fingernails, or skin
relaxed and calm feeling
unusual tiredness or weakness
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:
Difficulty having a bowel movement
lack or loss of strength
Incidence not known
Burning or sore mouth
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings inside the mouth
decline or loss of libido or sexual desire
redness, swelling, or soreness of the tongue
reduced muscle strength
swelling, inflammation, or redness of the mouth
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.