Baclofen may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert. Drinking alcohol can increase certain side effects of baclofen. Do not use baclofen at a time when muscle tone is needed to assure safe balance and movement for certain activities. In some situations, it may endanger your physical safety to be in a state of reduced muscle tone.
You may have withdrawal symptoms such as seizures or hallucinations, when you stop using baclofen after using it over a long period of time.
Do not stop using baclofen without first talking to your doctor. You may need to use less and less before you stop the medication completely. Using baclofen may increase your risk of developing an ovarian cyst. Talk with your doctor about your specific risk.
Before taking this medicine
You should not use baclofen if you are allergic to it.
To make sure you can safely take baclofen, tell your doctor if you have any of these other conditions:
Using baclofen may increase your risk of developing an ovarian cyst. Talk with your doctor about your specific risk.
FDA pregnancy category C. It is not known whether baclofen will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. It is not known whether baclofen passes into breast milk or if it could harm a nursing baby. You should not breast-feed while you are using baclofen. Do not give this medication to a child younger than 12 years old. Older adults may be more sensitive to the effects of this medicine.
How should I take baclofen?
Take baclofen exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
Your doctor may occasionally change your dose to make sure you get the best results.
Call your doctor if your muscle symptoms do not improve after 2 weeks of taking baclofen. Do not stop taking this medication without first talking to your doctor. You may have withdrawal symptoms such as seizures or hallucinations, when you stop using baclofen after using it over a long period of time. You may need to use less and less before you stop the medication completely.
Store baclofen at room temperature away from moisture and heat.
If any of the following side effects occur while taking baclofen, check with your doctor or nurse as soon as possible:
Less common or rare:
- Bloody or dark urine
- chest pain
- hallucinations (seeing or hearing things that are not there)
- mental depression or other mood changes
- ringing or buzzing in the ears
- skin rash or itching
Symptoms of overdose:
- Blurred or double vision
- convulsions (seizures)
- muscle weakness (severe)
- shortness of breath or unusually slow or troubled breathing
Minor Side Effects
Some of the side effects that can occur with baclofen may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:
- dizziness or lightheadedness
- unusual weakness, especially muscle weakness
Less common or rare:
- Abdominal or stomach pain or discomfort
- clumsiness, unsteadiness, trembling, or other problems with muscle control
- difficult or painful urination or decrease in amount of urine
- false sense of well-being
- frequent urge to urinate or uncontrolled urination
- loss of appetite
- low blood pressure
- muscle or joint pain
- numbness or tingling in hands or feet
- pounding heartbeat
- sexual problems in males
- slurred speech or other speech problems
- stuffy nose
- swelling of ankles
- trouble in sleeping
- unexplained muscle stiffness
- unusual excitement
- unusual tiredness
- weight gain