Abstract: The invention provides therapeutic methods, pharmaceutical compositions, and unit dose formulations for treating movement disorders, such as using a muscarinic acetylcholine receptor inhibitor in combination with a muscarinic acetylcholine receptor activator to treat the movement disorder, such as dystonia. In some aspects, the invention provides a method of treating a movement disorder in a patient, where the method comprises administering to a patient in need thereof (i) a muscarinic acetylcholine receptor inhibitor in an amount effective to treat the movement disorder and (ii) a muscarinic acetylcholine receptor activator in an amount effective to reduce the frequency and/or magnitude of at least one side effect of the muscarinic acetylcholine receptor inhibitor, to thereby treat the movement disorder.