Rescue medications are quick-acting drugs used to treat sudden or severe symptoms of a medical condition. They are often prescribed for conditions like asthma or anaphylaxis, where immediate relief is necessary. These medications work rapidly to alleviate symptoms and prevent complications. Typically, rescue medications are taken during an emergency or when symptoms worsen. For example, a person with asthma may use an inhaler containing a rescue medication to open their airways. It is important to have these medications readily available and to follow a healthcare provider's instructions for their use.