The present disclosure relates to pharmaceutical compositions comprising a therapeutically effective amount of an antimuscarinic or an anticholinergic agent or a pharmaceutically acceptable salt or a stereoisomer thereof in combination with a therapeutically effective amount of lipoic acid or a pharmaceutically acceptable salt or a stereoisomer thereof. The antimuscarinic or anticholinergic agent is a compound of Formula I, Formula II, or Formula III and lipoic acid is a compound of Formula IV or Formula V. The Pharmaceutical composition is a physical mixture of an antimuscarinic or an anticholinergic agent and lipoic acid.
