mylvera
thanks, i jus found it online too.
here's also a link i found, apparently, not encouraged to use for lactating mothers:
http://emc.medicines.org.uk/emc/assets/c/html/DisplayDoc.asp?DocumentID=1734#PREGNANCY
Here's the section from the book
NAPROXEN
Lactating Risk is L3
Naproxen is a popular NSAID analgesic. In a study done at a steady state in one mother consuming 375mg twice daily, milk levels ranged from 1.76-2.37mg/L at 4hours. Total naproxen excretion in the infant's urine was only 0.26% of the maternal dose. Altho the amount of naproxen transferred via milk is minimal, one shoud use with caution in nursing mothers becos of its long half-life and its effect on infant cardiovascular system, kidneys and GI tract. However, its short term use postpartum or infrequent or occasional use would not necessarily be incompatible with breastfeeding. One case of prolonged bleeding, hemorrhage, and acute anaemia has been reported in a seven day old infant. The relative infant dose on a weight adjusted maternal daily dose would probably less than 3.3%
Adult Concerns : GI distress, gastric bleeding, hemorrhage
Pediatric concerns : One reported case of prolonged bleeding, hemorrhage and acute anaemia in 7-day old infant
Alternative : Ibuprofen
Lactation Risk Category
L1 Safest - Drugs which has been taken by a large number of BF mothers w/o any observed increase in adverse effects in the infant.
L2 Safer - Drug which have been studied in a limited number of BF women without an increase in adverse effects in infant. And/or, the evidence of a demonstrated risk which is likely to follow use of this meds in a BF women is remote
L3 Moderately Safe - there are no controlled studies in BF women, however, untoward effects to a breastfed infant is possible. or controlled studies show only minimal non threatening adverse effects. Drugs shud be given only if the potential benefit justifies the potential risk to the infant. (new meds that have absolutely no published data are automatically categorized in this category, regardless of how safe they may be)
L4 - Possibly Hazardous - There is positive evidence of risk to a BF infant or to BM production, but the benefits from use in BF mothers may be acceptable despite the risk to the infant (eg if the drug is needed in a life threatening situation or for a serious disease for which safer drugs cannot be used or ineffective)
L5 - Contraindicated - Studies in BF mothers have demonstratd that there is significant and documented risk to the infant based on human experience, or it is a med that has high risk of causing significant damage to an infant. The risk of using the drug in BF women clearly outweighs any possible benefit from BF.