Accessible Summary: Asthma is a problem for many people. Some people need help with their medicines for asthma. People who help with medicines should know how medicines work and how they are used. This study found that many helpers need more education about asthma medicines. Abstract: Background: People who have an intellectual or developmental disability (IDD) and asthma are at greater risk of poor health outcomes. They often require assistance from caregivers when managing their medicines.