This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asthma, Subject name: Pharmacology
Most unpleasant side effect of salbutamol is 
Select and explain. 
A. Tremors, B. Hypertension, C. Rhinorrhoea, D. Headache
A: Tremors
Answer: A: Tremors 
Explanation: Ans. a (Tremors.) (Ref: KD Tripathi, Pharmacology, 4th ed., 125, 237)Salbutamol is highly selective beta, agonist used to treat attacks of asthma.Its side effects are:# Tremors (unpleasant, dose-related).- Palpitations# Restlessness- Ankle edema# Nervousness- Throat irritation