Antibiotic

 Antibiotic is a drug that act against bacteria. Antibiotic does not act against virus. 

On the basis of its effectiveness it is two types.

Broad spectrum antibiotic： Antibiotic that act agaist both gram positive bacteria and gram negative bacteria

Narrow spectrum antibiotic：Antibiotic that act agaist only a selective group of bacteria is narrow spectrum antibiotic.

On the basis of mechanism of action antibiotic are also classified as bellow,

1. Penicillin, Cephalosporin inhibits cell wall synthesis, 

Polymyxin targets cell membrane

Some antibiotic interfare with enzyme and kills bacteria.

Quinolone, Salfonamide are interfers with enzyme synthesis. 

Above these are bactericidals. Bactericidals are these antibiotic these kills bacteria.

Macrolide, Tetracycline, are protein synthesis inhibitor. These stop growth of the bacteria. These are called bacteriostatic antibiotic.

Aminoglycosides are only protein synthesis inhibitor which is bactericidal.

Antibiotic and anti bacterial agent both do same function against bacteria. But these have a basic difference.

Antibiotics are produced by a biological process but antibacterial agent are synthetic.