Date of Publication :2nd April 2021

Abstract: Corrosion is the process in which any material deteriorates because of chemical reactions with its environment. It occurs due to the exposure of metal surface and comes in contact with a gas and a liquid and it becomes a major problem as it causes tremendous economic loss. To overcome this problematic and dangerous issue of corrosion, some researchers and scientists discovers some method to control corrosion , such as use of chemical inhibitors, protective surface coatings, cathodic protection , modify corrosive environment but the presence of toxic material is high in all the methods which affect environment so there is an urgent need of environmental friendly inhibitors like expired drugs or green plant extracts which attracting great interest in the corrosion field thanks to its safety, biodiversity, ecologically acceptability and renewability. Literature review disclose that various types of drugs (Antibacterial, Antifungal, Antibiotic, Anti-malarial, Analgesic, Anti-depressant, Anti-hypertensive, Antihistamine) and green plant extracts have been efficaciously vibrant as feasible inhibitors for decreasing the effect of corrosion on metals and alloys. The imminent sections deliver comprehensive overview of the application of drugs and green corrosion inhibitors and the literature on their corrosion inhibition studies.

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