Alcohol can increase the absorption of tizanidine, possibly increasing the levels of the medication in the blood. Combining alcohol with tizanidine can cause additive effects, such as increased drowsiness, confusion, memory loss, or difficulty breathing.
For future reference:
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
feeling light-headed, fainting, slow heart rate;
hallucinations, confusion, unusual thoughts or behavior;
nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or
burning or pain when you urinate.
Less serious side effects may be more likely to occur, such as:
drowsiness or dizziness;
feeling anxious or nervous;
numbness or tingling;
stomach pain, diarrhea, constipation, vomiting;
muscle weakness, back pain;
increased muscle tone or spasms; or
sweating or skin rash.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
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