Rescue Inhalers is just one of several over-the-counter or OTC asthma attack treatment available. But despite the popularity of this particular treatment method, there are several asthmatic patients who have noticed this method has become less effective over time. In other times, no relief is experienced at all. When this happens, your doctor will prescribe another asthma attack treatment to control the symptoms. These medications are intended to open up airways and facilitate in proper function of your respiratory system. If you are using OTC medications or asthma treatments however, make sure to follow instructions properly to avoid causing harm or further endangering your condition.