$Cimetidine$ among the following is

Which of the following is not an artificial sweetener?

The structure of paracetamol is

Tranquilisers are substances used for the treatment of

Two statements in respect of drug-enzyme interaction are given below.
Statement $I$: Action of an enzyme can be blocked only when an inhibitor blocks the active site of the enzyme.
Statement $II$: An inhibitor can form a strong covalent bond with the enzyme.
In the light of the above statements,choose the correct answer from the options given below.

The use of chemicals for therapeutic effect in the treatment of diseases is called ...... .