Explain the process of drug-enzyme interaction.

Drugs inhibit the catalytic activity of enzymes in two primary ways:
$(i)$ Competitive Inhibition: Drugs compete with the natural substrate for their attachment to the active sites of enzymes. These drugs are called competitive inhibitors.
$(ii)$ Allosteric Inhibition: Some drugs do not bind to the enzyme's active site. Instead,they bind to a different site on the enzyme known as the allosteric site. This binding changes the shape of the active site,preventing the substrate from binding effectively.