What do systematic reviews say?

Anticholinergic medication vs placebo

Anticholinergics may leads to lower vomiting ‐ postoperative compared with placebo (low certainty).

• Interventions for preventing nausea and vomiting in women undergoing regional anaesthesia for caesarean section 2021 · Cochrane Headline outcomes only
  RR 0.55 [0.41, 0.74]
  1 study · 161 participants
  Low