When taken regularly, Baclofen may take 1 to 2 months before becoming completely effective, according to WebMD. Baclofen is a muscle relaxer. It is usually given to patients who have multiple sclerosis or other spinal diseases that cause spasms or tightness in the muscles.
To reach full effectiveness, patients should carefully follow dosing instructions, which may include gradually increasing the dosage amount over a period of time. The pill can be taken with or without food, as advised the prescribing physician, and should be taken at the same time every day to maintain the same medication levels within the body. Be sure to consult with a doctor before discontinuing the use of Baclofen to avoid withdrawal symptoms such as seizures or hallucinations, according to WebMD.