Your doctor should check your progress at regular visits, especially during the first few weeks of treatment with this medicine. During this time, the amount of medicine you are using may have to be changed often to meet your individual needs.
Make sure to keep all appointments to refill the pump. If the pump is not refilled on time, you may experience return of your muscle tightness and early withdrawal symptoms which might include:
- itching of the skin
- decreased blood pressure
- blurred vision
- dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
- unusual tiredness or weakness
- burning, crawling, itching, numbness, prickling, "pins and needles" , or tingling feelings
Intrathecal baclofen will add to the effects of alcohol and other CNS depressants (medicines that may make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; other muscle relaxants; and anesthetics, including some dental anesthetics. Check with your doctor before taking any of the above while you are using intrathecal baclofen.
Intrathecal baclofen may cause dizziness, drowsiness, false sense of well-being, lightheadedness, vision problems, or clumsiness or unsteadiness in some people. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not alert, well-coordinated, and able to see well.
Intrathecal baclofen may cause dryness of the mouth. For temporary relief, use sugarless candy or gum, melt bits of ice in your mouth, or use a saliva substitute. However, if dry mouth continues for more than 2 weeks, check with your medical doctor or dentist. Continuing dryness of the mouth may increase the chance of dental disease, including tooth decay, gum disease, and fungus infections.
Dizziness, lightheadedness, or fainting may occur when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem.