vilan hydromorphinol others vary ways duration action side effect profile milligramme potency fentanyl benefit less histamine release thus fewer side effects also administered via transdermal patch convenient chronic pain management addition intrathecal patch injectable fentanyl formulations fda food drug administration approved various immediate release fentanyl products breakthrough cancer pain actiq otfc fentora onsolis subsys lazanda abstral oxycodone used across americas europe relief serious chronic pain main slow release formula known oxycontin short acting tablets
Applied science Medicine and health Pain Medicine