What do systematic reviews say?

Double intrauterine insemination (IUI) vs single IUI

Double intrauterine insemination (IUI) showed no clear difference in live birth 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 1.15 [0.71, 1.88]
  3 studies · 468 participants
  Low