TalkCodeine, Breastfeeding and Your Genes
Some women carry multiple copies of a gene that metabolizes codeine into morphine. These women process codeine at much higher rates than the average person, which means that when they take an average dose of codeine, it is rapidly converted to unusually high levels of morphine.
For new mothers prescribed codeine after childbirth, this can be a tragic cocktail for their babies. A recent study in Canada reports the death of a newborn from morphine overdose via breast milk.
Babylune notes, “This is not a reason to stop nursing. This is a reason to stop taking codeine.” I say it’s also a reason to consider genetic testing for drug metabolism.
The gene involved in codeine metabolism is called CYP2D6. It metabolizes around 25% of all commonly prescribed medications. It’s also involved in the metabolism of some over-the-counter meds, herbal supplements, and even some foods. Knowing your genetic status is useful information if you’re prescribed or considering taking any drugs metabolized by CYP2D6.
Our company will soon be offering drug metabolism testing — and you can be sure I’ll be the first in line for it. Stay tuned!
Technorati Tags: codeine, morphine, breast milk, breastfeeding, painkillers and breastfeeding, medications and childbirth, CYP2D6, drug metabolism, genes, genetic testing
February 10th, 2008 at 12:27 am
I am 21 years old and have a four month old baby; 6 week Prem. I am breastfeeding and very interested in your research. I came to your site quetioning the use of painkillers due to pain that will not allow me to sleep. Panadol had been ineffective and I was considering taking something stronger, which I will now avoid for the sake of my baby’s health.