Tolterodine is a medicine used to treat symptoms of an overactive bladder. These can include: a sudden and urgent need to pee (urinary urgency)
needing to pee more often than usual (urinary frequency)
Tolterodine acts as a competitive antagonist of acetylcholine at postganglionic muscarinic receptors. Both urinary bladder contraction and salivation are mediated via cholinergic muscarinic receptors.