Drugs that are used to reduce fever are called antipyretic.
Eg: Asprin, paracetamol

General anaesthetics cause a controlled and reversible loss of consciousness by affecting central nervous system.
Uses: They are often used for major surgical procedures.
Eg: Inhalational general anaesthetics- Isoflurane.

It causes loss of sensation, in the area in which it is applied without losing consciousness. They block pain perception that is transmitted via peripheral nerve fibres to the brain.
Uses: They are often used during minor surgical procedures.

Anaesthetics are broadly classified into
(i) Local anaesthetics
(ii) General anaesthetics

Aspirin prevents platelet coagulation hence used to prevent heart attacks.

Pheneol IS used as an antiseptic as well as a disifectant 0.2% of phenol is an antiseptic whereas 1% solution is a disinfectant.

(i) Antagonists drugs: The drug that binds to the receptor site and inhibits its natural function are called antagonists.
(ii) Agonist drugs: The drugs which mimic the natural messenger by switching on the receptor are called agonist.

(i) Hydrogen bonding
(ii) Vander waals force

The drug molecule interacts with biomolecules such as enzymes, receptors etc., which are referred as drug targets.

The specific treatment of a disease using medicine is known as chemotherapy.

Proteins.

Classification of drugs based on biological system or process, that target the recipient is called target drug action.

(i) In certain enzymes, the inhibitor molecule binds to a different binding site, which is commonly referred to as allosteric site, and causes a change in its active site geometry (shape).
(ii) As a result, the substrate cannot bind to the enzyme. This type of inhibitors are called allosteric inhibitors

(i) When a drug molecule that has a similar geometry (shape) as the substrate is administered, it binds to the enzyme and inhibits its activity.
(ii) In other words, the drug acts as an inhibitor to the enzyme catalyst. These type of inhibitors are often called competitive inhibitors.

Dettol is a mixture of chloroxylenol and terpineol which imparts antiseptic properties to it.