Antibiotics’ other attributes:

1. Exhibit sufficient SELECTIVE TOXICITY to be decisively effective against pathogenic microorganism or neoplastic tissue, without causing significant toxic effects 2. Chemical is STABLE enough to be isolated, processed and stored for a reasonable length of time without deterioration of potency. 3. RATE of biotransformation and elimination of antibiotic should be SLOW enough to allow a convenient dosing schedule, yet rapid and complete enough to facilitate removal of the drug from the body soon after administration is discontinued.