Date	Event	Description
15 July 2015	Review declared as stable	See Published notes.
7 December 2014	New citation required but conclusions have not changed	The results of the six new included studies have not changed the conclusions of the previous version of the review.
7 December 2014	New search has been performed	In this review update, we included six new randomised clinical trials after identifying 360 new references, increasing the number of participants from 200 to 479. This new included evidence has led to substantial amendment of the characteristics of the included participants, with a decrease in the proportion of women and obstetric participants from around 80% to 50% because none of the new trials include participants with post‐dural puncture headache after obstetric analgesia. We have evaluated two new interventions, cosyntropin (one new study) and pregabalin (one new study), which did not show any significant benefit. Two new trials on theophylline, one on hydrocortisone and one on gabapentin, are included in this update and add significant evidence that is concordant with the previous review. In this update, a new review author has been added, Dimelza Osorio, who worked on the review in all phases of the process. We have also added 'Risk of bias' summary tables.