Levolin respules are used in asthma to quickly relieve symptoms like wheezing, chest tightness, and shortness of breath by relaxing the airway muscles, and the strength chosen depends mainly on how severe the symptoms are and how the patient responds to treatment. In mild or occasional episodes, doctors often start with lower strengths like 0.31 mg or 0.63 mg to see how well the breathing improves, while in more significant breathlessness or acute flare-ups, a higher dose such as 1.25 mg may be used under medical guidance. The exact strength and frequency are adjusted based on age, severity of asthma, and whether symptoms are occasional or recurring. It is important not to change the dose on your own because using too much can lead to side effects like palpitations, tremors, or restlessness. If you find that you are needing Levolin frequently or symptoms are disturbing sleep or daily activities, it usually means asthma is not well controlled, and you may need long-term controller inhalers rather than relying only on reliever medication. Regular follow-up with a doctor helps in adjusting treatment safely and improving long-term control.