What is the name given to medicines used for getting relief from pain?

What is the name of the alkaloid which is specifically used for treatment of malaria fever?

73.

What type of drug is used in curing infectious diseases?

Why is paracetamol preferred to aspirin?

Name one estrogen which forms a part of an oral contraceptive.

Give the structure of an alkyl benzene sulphonate detergent.

What is the difference between a preservative and an antioxidant?

What is an alkaloid? Give one example of drug which belongs to alkaloid group.

Name a drug used in case of mental depression.

Why one should not take aspirin on empty-stomach?