Prophylactic effect of chamomile on post-dural puncture headache in women undergoing elective cesarean section: A randomized, double blind, placebo-controlled clinical trial

•Chamomile ointment significantly lowers the incidence of post-dural puncture headache (PDPH) compared to a placebo.•PDPH rates were significantly lower in the chamomile group at 6 hours (3.5% vs. 7.18%) and 12 hours (7.6% vs. 20%) after spinal anesthesia.•Both groups had comparable analgesic consumption, nausea/vomiting frequency, and adverse events.