Gentamycin is an aminoglycoside antibiotic isolated from Micromonospore purpurea. The aminoglycosides are the compound containing characteristic amino sugars joined to a hexose nucleus in glycoside linkage. Aminoglycosides are polycations and their polarity accounts for their pharmakokinetic properties. Gentamycin is effective against both gram positive and gram negative bacteria. Gentamicin (Sulphate) is active alone but also exibit synergism with β lactam antibiotic. Antibiotics require constant drug level in body for therapeutic effect. This is achieved by taking the medication at regular interval of time throughout the day and night as prescribed. Gentamicin (Sulphate) is important to take the drug for the full time period as prescribed. If you discontinue the therapy, it may result in ineffective treatment.