Sources of youth access to JUUL vaping products in the United States.

•In a survey of 9865 adolescents aged 13–17 years in the United States 79.6% of those who reported having used the JUUL vaporizer in the last 30 days obtained the JUUL device from at least one social source (e.g. ‘someone bought for me, someone offered to me) in the past 30 days.•20.0% of current JUUL using adolescents bought JUUL products themselves.•Among youth who bought JUUL products themselves, the most common place of purchase was ‘a gas station or convenience store’.•Reducing youth access to JUUL vaping products will require a greater focus on measures that deter or penalize legal-age purchasers who give or sell products to minors.