Methods	Design: RCT
	Unit of randomisation: Individually randomised trial
Participants	Location/Setting: Conducted in 54 nonformal primary education schools operated by the Bangladesh Rural Advancement Committee (BRAC, one of the largest national nongovernmental organizations in the world) in Sherpur district, 300 km northeast of Dhaka city
	Sample size: 1125 adolescent girls
	Dropouts/withdrawals: 136 out of 1,125 loss to follow‐up
	Sex: Only adolescent girls
	Mean age: 12 years
	Inclusion criteria: Not specified
	Exclusion criteria: Students suffering from either severe micronutrient deficiencies or acute infection (clinical signs of fever or reportedly suffer from any infectious disease) were excluded and referred to the nearby health center for appropriate treatment
Interventions	Intervention (sample size):
	Group 1 (N = 559): Powdered beverage fortified with multiple‐micronutrients and packaged in sachets
	Control (sample size):
	Group 2 (N = 566): Placebo beverage
	The test beverages were consumed 6 days per week for 12 months at the schools
Outcomes	Primary outcomes: Weight, height, MUAC, BMI, haemoglobin, serum ferritin, serum retinol, serum zinc
	Secondary outcomes: Not specified
	Timing of outcome assessment: After 12 months of intervention
Notes	Study start date: Not specified
	Study end date: Not specified
	Funding source: Micronutrient Initiative, Ottawa, Canada
	Conflicts of interest: No conflicts of interest declared