linda: it is in Dr. hales book: "oxaprozin belongs to the NSAID family of analgesics. and is reputed to have lesser GI side effectrs than certian others. Howver its long half-life caould prove troublesome in breastfed infants. No data on transfer into human milk . See ibuprofen for alternative. PK 3.5 hours AHL: 42.5 hrs. patricia