IRCT20190217042739N1.

Study name	Comparing the effect of Salvia hydrangea and mefenamic acid on postpartum pain
Methods	Randomised double blind study Participants, care providers, investigators, outcome assessors, and data analysers are all blinded
Participants	100 women Inclusion criteria: vaginal delivery, moderate or severe pain after delivery, no maternal history of herbal drugs allergy, mother's age between 18 ‐ 35 years, deliver a singleton and healthy baby. No entry criteria: maternal history of herbal drugs allergy, 3 or 4 degree laceration, maternal history of chronic disease, history of caesarean section or pelvic operation
Interventions	Group 1: Mefenamic acid and a 500 mg Salvia Hydrangea capsule given every 6 hours during a 24‐hour period Group 2: Mefenamic acid and a placebo capsule every 6 hours during a 24‐hour period
Outcomes	Self‐report of pain using McGill pain score Adverse events
Starting date	Start date March 2019 Recruitment reported as complete July 2019
Contact information	kheyri.rezvan@sbmu.ac.ir
Notes	Emailed 16 July 2020; no response