This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
At pharmacological doses unwanted unvaoidable effects are called - 
Select and explain. 
A. Side effects, B. Idiosyncratic reaction, C. Toxicity, D. Pharmacogenetics
A: Side effects
Answer: A: Side effects 
Explanation: Ans. is 'a' i.e., Side effects o Unwanted effect at therapeutic dose --> Side effect o Unwanted effect due to overdose ---> Toxic effect