All the substances in cannabis (cannabinoids, terpenes, and flavonoids) are excreted in breast milk. Just like in pregnancy, we need to weigh the risks of exposure of the drug to the infant against the risks/benefits of the mother taking the drug. When it comes to compounds containing THC, almost always the potential risks to the infant outweigh, by a significant margin, the benefits for the mother. THC exposure in the developing brain changes the structure and function of the brain adversely and these effects almost always carry over into adulthood. When it comes to the other cannabinoids, we don’t have much data on the possible adverse effects to the infant. This is not because there are none, but because very little research has been done in this area. Therefore, we have to make decisions based on what we know at this point.
Presently, we know that CBD has effects on the immune and neural systems in normal human adults, but these effects don’t seem to harm them. In adults and children that have certain diseases, CBD can significantly change the function of both systems in extremely beneficial ways. We suspect that CBD can change the structure and function of both the immune and neural systems of breastfeeding infants, but we do not if this change will be for good, for bad, or of no consequence.
I do not recommend breastfeeding women take CBD-enhanced hemp oil if they don’t have to. If they have a certain disease for which they need to take CBD-enhanced hemp oil, they should talk it over with their doctor and their baby’s doctor before they take it. If the decision is made to take CBD-enhanced hemp oil, take some that has no THC in it, if at all possible. If some THC is required, take the minimal amount required to control the disease.
In regards to giving cannabis products to a mother to treat a breastfeeding infant that has a problem, there is no information I can find where this has ever been done. There are some theoretical situations where I can imagine trying it, but to my knowledge, no one ever has.
All the products in cannabis (cannabinoids, terpenes, and flavonoids) are found in breast milk and seem to have effects on the developing child. Some of these effects can be detrimental, specifically THC effects. Whether the other compounds cause detrimental, beneficial, or no effects to the infant is unknown at this time, however, there is potential for negative effects. My recommendation is not to take any cannabis products while breastfeeding, but if some are needed, the least amount of THC required to control the mother’s problems should be used.
Disclaimer: The above are my opinions only and any woman who is concerned about taking cannabis products while breastfeeding should consult with their doctor and their child’s pediatrician about this before proceeding.