Terbutaline is a medication primarily used to treat asthma and other respiratory conditions by relaxing the muscles in the airways, making it easier to breathe. It belongs to a class of drugs known as beta-agonists, which stimulate specific receptors in the body to promote bronchodilation. In addition to its use in asthma, terbutaline can also be prescribed to manage preterm labor in pregnant women by relaxing the uterus. It is available in various forms, including inhalers and tablets, and should be used under the guidance of a healthcare professional to ensure safety and effectiveness.