The lowest concentration of a substance, generally a medicine, that limits observable development of a bacterium or bacteria is known as the minimum inhibitory concentration (MIC). The MIC is determined by the pathogen, the human person who is being treated (in vivo only), and the antibiotic itself. Micrograms per millilitre (g/mL) or milligrammes per litre (mg/L) are common units of measurement.The medication is bactericidal and has a minimum inhibitory concentration of 1 mg/L. The medication is bactericidal and has a minimum inhibitory concentration of 2 mg/L. Antibiotics are antibiotics that kill germs and can heal life-threatening infectious diseases like pneumonia that previously had no effective treatment.