What do systematic reviews say?

Sedation vs placebo

Sedatives 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 0.09 [0.03, 0.28]
  2 studies · 145 participants
  Low