Encyclopedia > Neomycin

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Neomycin is an antibiotic that is found in many topical medications such as creams, ointments and eyedrops.

It can also be given orally, where it is usually combined with other antibiotics.

Neomycin was discovered in 1949 by the microbiologist Selman Waksman. It is produced naturally by the bacterium Streptomyces fradiae.

Neomycin has a broad spectrum of effect, killing both gram-postive and gram negative bacteria. It is relatively toxic to humans, and some people have allergic reactions to it.

Neomycin is used in the lab[?] in agar plates incubation anaerobically. Neomycin stops the growth of gram-negative bacilli and staphylcocci, allowing Streptococcus species to grow more abundantly.

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