Toader Mioriţa 1, Oprea Alina 1, Drăghici M. 2, Toader C. 3
1 Emergency Children Hospital ,,GrigoreAlexandrescu,, Bucharest
2 Dentirad Hospital Ploieşti
3 INNBCV Bucharest
Antibiotics are substances produced mainly from microorganisms such as actinomycetes, molds and bacteria, of biological origin, and they can be used in anti-infective therapy, such as in very low concentrations they can prevent the growth of pathogens, or to destroy them, thereby interfering with their metabolism. The chemotherapy has also the same qualities, but they are produced by chemical synthesis. Anti-infective chemotherapy was a remarkable achievement in medicine. Their action is not exercised fast as in the case of disinfectants and antiseptics. It takes some time to appear consequences of their activity on the pathogen agent. Fleming has characterized them as “slow-acting antiseptic”. The primary acquiring of antibiotics and chemotherapeutic agents is their activity against pathogenic microorganisms, misappropriation conditioning their use in therapy.