Why do drugs design to cure some ailment in one organ in the body not affect the other parts? Explain with an example.

What kind of medicines are given to patients of shattered confidence?

With the help of examples, explain how do following type of drugs functions?
(i) Analgesics
(ii) Antacids
(iii) Antifertility drugs

Amino acid serine, aspartic acid and phenylalanine are present on the active site of an enzyme. Explain which forces may be involved in bonding the drug to the enzyme if the drug inhibits the holding of the substrate on the active site of the enzyme.

Chlordiazepoxide belongs to which category of drug?

Which forces are involved in holding the drugs to the active site of enzyme.

Explain the term target molecules or drug targets as used in medicinal chemsitry.

Low level of noradrenaline is the cause of depression. What type of drugs are needed to cure this problem? Name two drugs.