What do systematic reviews say?

Anticholinergic medication vs placebo

Anticholinergics may leads to higher adverse events: dry mouth compared with placebo (low certainty).

• Oral anticholinergic drugs versus placebo or no treatment for managing overactive bladder syndrome in adults 2023 · Cochrane Headline outcomes only
  RR 3.5 [3.26, 3.75]
  66 studies · 38368 participants
  Low