AimEmesis of oral medications continues to be a problem in the management of acute pediatric asthma exacerbations; therefore, we set out to assess whether smaller volumes of oral dexamethasone resulted in better tolerability. Children aged 2-14 years, presenting to the emergency department with acute asthma exacerbation, were enrolled in this open, prospective randomized controlled trial. Participants received 0.3 mg/kg of dexamethasone in either its concentrated volume (10 mg/mL) or mixed with Ora Sweet (1 mg/mL). Tolerability was measured by vomiting within 45 minutes of receiving dexamethasone, with stratification, a priori, for prior vomiting. 430 participants were enrolled. 23/213 (11%) in the 10 mg/mL group vomited dexamethasone compared to 16/217 (7%) in the 1 mg/mL group (P = .29). 11/179 (6%) in the 10 mg/mL group vomited compared to 8/183 (3%) in the 1 mg/mL group (.61). For those 68 stratified with prior vomiting, 12/34 (35%) in the 10 mg/mL group vomited compared to 8/34 (24%) in the 1 mg/mL group (P = .43). None of these results were statistically different. Prior vomiting increased the risk of vomiting, regardless of the formulation given (P < .001). Volume does not play a significant role in the tolerability of dexamethasone. Therefore, palatability should not be sacrificed for a smaller volume of dexamethasone to improve tolerability.