What do systematic reviews say?

Double intrauterine insemination (IUI) vs single IUI

Double intrauterine insemination (IUI) showed no clear difference in ectopic pregnancy ratea compared with single IUI (low certainty).

• Double versus single intrauterine insemination (IUI) in stimulated cycles for subfertile couples 2021 · Cochrane Headline outcomes only
  OR 1.22 [0.35, 4.28]
  4 studies · 1048 participants
  Low