Eligibility criteria {10}
PPH
For a woman to be eligible, the randomising clinician must be uncertain about whether to give tranexamic acid. If the clinician believes tranexamic acid is indicated based on the existing evidence, they should not randomise the woman into the trial. During the trial, if accumulating evidence from other trials clearly demonstrates that tranexamic acid prevents PPH with a favourable balance of benefits and harms, it would be unethical to randomise women to receive a placebo. If this happens, the placebo arm will be dropped, and we will continue to recruit women into the IM and IV TXA arms.