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Streptomycin is _____ antibiotic.

(a) Narrow spectrum

(b) Broad spectrum

(c) Narrow and broad spectrum

(d) Medium spectrum

This question was posed to me in semester exam.

Enquiry is from Production of Antibiotics (Isolation of Fermentation Products) in portion Antibiotics & Enzyme Immobilization of Drug Biotechnology

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Right option is (b) Broad spectrum

For explanation: Streptomycin has amino cyclohexanol moiety. It is effective against gram –ve organisms but yet it is broad-spectrum antibiotic. It is used for the treatment of tuberculosis. Its side effect is nephrotoxicity.

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