Study	Reason for exclusion
Dressler 2015	Irrelevant study population ‐ infantile spasms.
Freeman 1999	Outcome measures did not match inclusion criterion as duration of study was 12 days.
Freeman 2009	Study was very brief and lasted only 12 days ‐ duration of the study did not fit entry criteria.
Hemingway 2001	Not a randomised controlled trial.
Kang 2011	Drug‐resistant infantile spasm population, outcome measures did not match inclusion criteria for this review.
NCT03183076	We suspect that the study was non‐randomised.
Singh 2015	Abstract only. Unable to obtain further data.
Smith 2011	Not a randomised controlled trial.