Is Chlortetracycline safe for babies and kids?
Elevated risk for kidsInfants are more vulnerable to Chlortetracycline than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
What is chlortetracycline?
Also known as: CTC, Aureomycin, Biomycin, 7-chlorotetracycline.
- CAS number
- 57-62-5
- Molecular formula
- C22H23ClN2O8
- Molecular weight
- 478.88 g/mol
- SMILES
- CC1(C2C(C3C(C(=O)C(=C(C3(C(=O)C2=C(C4=C1C=CC=C4O)O)O)O)C(=O)N)N(C)C)O)O
- PubChem CID
- 54675779
Risk for babies
Elevated riskInfants are more vulnerable to Chlortetracycline than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.
Risk for pregnant and nursing people
Context-dependentPregnancy alters the metabolism and distribution of Chlortetracycline, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Regulatory consensus
3 regulatory and scientific bodies have classified Chlortetracycline. The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| FDA CVM | 2017 | Approved veterinary drug; Veterinary Feed Directive (VFD) required since 2017 for use in feed | |
| EU | 2006 | MRL established for food-producing animals; growth promotion use banned since 2006 (Regulation 1831/2003) | |
| WHO | 2019 | Highly important antimicrobial (not critically important) for human medicine |
Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.
Where kids encounter chlortetracycline
- Animal Feed
- Food
- Environment
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Chlortetracycline:
-
Probiotics and prebiotics
Trade-offs: Less consistent growth response. No AMR concern. Increasing adoption in EU post-antibiotic growth promotion ban.Relative cost: Variable
-
Improved biosecurity and management
Trade-offs: Capital investment required. Reduces need for prophylactic antibiotics.Relative cost: Higher upfront, lower long-term
Frequently asked questions
Is chlortetracycline safe for kids?
Infants are more vulnerable to Chlortetracycline than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
What should I do if my child is exposed to chlortetracycline?
Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.
Why do regulators disagree about chlortetracycline?
Chlortetracycline has been classified by 3 agencies including FDA CVM, EU, WHO, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.
See Chlortetracycline in the baby app
Look up products containing chlortetracycline, compare to alternatives, and explore the full data record.
Open in baby View raw API dataReference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →