Patent ID: 9554996
Date: 2017-01-31
CPC Classifications: A61K,A61P

Claim:
1. A particle delivery system (PDS) comprising dry particles having an average diameter of less than about 2 mm, wherein the dry particles comprise a poorly soluble drug and a stabilizer comprising polyethylene glycol (PEG), wherein the amount of the poorly soluble drug present in the dry particles ranges from about 0.2% to about 4% by mass of the dry particles, the poorly soluble drug is encapsulated by the stabilizer, the poorly soluble drug comprises at least one drug selected from codeine, fentanyl, hydrocodone, hydromorphone, morphine, methylnaltrexone, nalbuphine, nalmefene, oxymorphone, oxycodone, pethidine, tramadol, and combinations or mixtures thereof, and wherein the stabilizer is water soluble.