5th March 2024

A 12-year-old boy presents to the emergency department in the acute stages of an asthma attack.

A 12-year-old boy presents to the emergency department in the acute stages of an asthma attack. He is experiencing severe shortness of breath, wheeze, and tiredness. Treatment protocol is followed, and following drug administration, the boy improves but develops a fine tremor in both his hands. His past medical history is only relevant for asthma. 

The medications given in his acute attack and his regular list are given below, please select the single most likely medication to cause the development of a tremor.