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Chlortetracycline

Level 4 — Significant concernsIn Winter's Dictionary

Chlortetracycline is a veterinary drug — Preservative; antibiotic used in dip and feed to improve feed efficiency

Also: Aureomycin, Biomycin

What it does

Preservative; antibiotic used in dip and feed to improve feed efficiency

Where you'll see it

Poultry, swine, calves, cattle

What the research says

Use believed to contribute to antibiotic resistance in patients. Has caused discoloration of permanent teeth in children. Can cause skin rash, gastrointestinal upsets, and inflammations.

Regulatory status

  • Notes: FDA limits residues in poultry, swine, calves

Sources

  • A Consumer's Dictionary of Food Additives (Winter): One of the reasons for increased resistance to antibiotics in patients is believed to be the widespread use of antibiotics in food animals