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Codeine not safe for all breastfeeding moms and their babies
Date:8/20/2008

Using pain treatments which contain codeine may be risky for some breastfeeding mothers, according to researchers at The University of Western Ontario, and the Hospital for Sick Children (SickKids) in Toronto. Lead author Dr. Gideon Koren published research in the journal, Clinical Pharmacology & Therapeutics which suggests that the codeine used in some pain relief drugs can actually have harmful and even fatal results for infants when ingested by some breastfeeding mothers.

"With nearly half of all infants in North America being delivered by caesarean section or after episiotomy, there is clearly a requirement for pain relief for mothers," says Koren. "However, our study confirms that codeine as a treatment for pain may be unsuitable and cannot be considered safe for all breastfed infants."

Koren holds the Ivey Chair in Molecular Toxicology at the Schulich School of Medicine & Dentistry at The University of Western Ontario, and is a professor of pediatrics at both Western and the University of Toronto. He is also a senior scientist in the Child Health Evaluative Sciences program at SickKids Research Institute, and director of The Motherisk Program.

Codeine is commonly used for pain relief and is recommended by the American Academy of Pediatrics as being compatible with breastfeeding. Following numerous reports through the Motherisk counseling service and the tragic death of an infant who died from an overdose of morphine acquired from breast milk, Koren and his team, located at SickKids and The University of Western Ontario, investigated these negative reactions.

Codeine is a 'prodrug' which means that on its own it is relatively inactive. The pain relieving attributes are only activated when it is metabolized, or transformed by the body into a more active pain relieving compound, morphine. Some individuals have a genetic variance which causes them to metabolize codeine at a rapid rate, producing signific
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Contact: Kathy Wallis
kwallis3@uwo.ca
519-661-2111 x81136
University of Western Ontario
Source:Eurekalert

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