Tizanidine Side Effects
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.
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.
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:
Chest pain or discomfort
fever or chills
nausea or vomiting
pain or burning while urinating
right upper stomach tenderness
seeing things that are not there
shortness of breath
Incidence not known
general feeling of tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
change in consciousness
chest pain or discomfort
decreased awareness or responsiveness
difficult or troubled breathing
dizziness, faintness or lightheadedness when getting up from a lying position
irregular, fast or slow, or shallow breathing
lightheadedness, dizziness, or fainting
loss of consciousness
pale or blue lips, fingernails, or skin
sleepiness or unusual drowsiness
slow or irregular heartbeat
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:
Dizziness or lightheadedness, especially when getting up from a lying or sitting position
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.