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Anticholinergics may leads to lower vomiting ‐ postoperative compared with placebo (low certainty).
Sedatives probably leads to lower nausea ‐ intraoperative compared with placebo (moderate certainty).
Sedatives probably leads to lower vomiting ‐ intraoperative compared with placebo (moderate certainty).
Sedatives may leads to lower vomiting ‐ postoperative compared with placebo (low certainty).
Opioid antagonists showed no clear difference in vomiting ‐ postoperative compared with placebo (low certainty).
It is very uncertain whether acupressure/acupuncture changes nausea ‐ intraoperative compared with placebo (very low certainty).
Acupressure/acupuncture may leads to lower vomiting ‐ intraoperative compared with placebo (low certainty).
It is very uncertain whether acupressure/acupuncture changes vomiting ‐ postoperative compared with placebo (very low certainty).
It is very uncertain whether ginger changes nausea ‐ intraoperative compared with placebo (very low certainty).
It is very uncertain whether ginger changes vomiting ‐ intraoperative compared with placebo (very low certainty).
It is very uncertain whether ginger changes vomiting ‐ postoperative compared with placebo (very low certainty).
5‐HT3 antagonists may leads to lower vomiting ‐ postoperative compared with placebo (low certainty).
It is very uncertain whether dopamine antagonists changes nausea ‐ intraoperative compared with placebo (very low certainty).
Dopamine antagonists may leads to lower vomiting ‐ intraoperative compared with placebo (low certainty).
It is very uncertain whether dopamine antagonists changes vomiting ‐ postoperative compared with placebo (very low certainty).
Phentermine/topiramate showed no clear difference in serious adverse events compared with placebo (low certainty).
Phentermine/topiramate may leads to higher all adverse events compared with placebo (low certainty).