Enzyme inhibitors are the substances that inhibit the activity by binding to an enzyme. There are three types of enzyme inhibition and they are substrate inhibition, competitive inhibition and non-competitive inhibition.
Reversible inhibitors can bind to enzymes through weak non-covalent interactions such as ionic bonds, hydrophobic interactions, and hydrogen bonds. Because reversible inhibitors do not form any chemical bonds or reactions with the enzyme, they are formed rapidly and can be easily removed; thus the enzyme and inhibitor complex is rapidly dissociated in contrast to irreversible inhibition.