RT Journal Article SR Electronic T1 Pharmacological and clinical aspects of immediate release fentanyl preparations: criteria for selection JF European Journal of Hospital Pharmacy: Science and Practice JO Eur J Hosp Pharm FD British Medical Journal Publishing Group SP 38 OP 40 DO 10.1136/ejhpharm-2011-000040 VO 19 IS 1 A1 E J M Kuip A1 M L Zandvliet A1 R H J Mathijssen A1 C C D Van der Rijt YR 2012 UL http://ejhp.bmj.com/content/19/1/38.abstract AB In palliative care, pain management is often hampered by episodes of breakthrough pain, characterised by a rapid onset and, on average, duration less than 1 h. Until recently, only immediate release morphine and oxycodon preparations were available for the treatment of these episodes but time until effect is too long for both of these drugs. Recently, immediate release fentanyl products have become available for the treatment of breakthrough pain. These products can be classified as oromucosal and nasal products. Both are absorbed rapidly by the mucosa, although the oromucosally delivered products are partly absorbed by the gastrointestinal tract and therefore reach maximum plasma levels somewhat slower (after 30–90 min) than the nasally delivered products (after ∼15 min). In clinical placebo controlled studies, all new immediate release fentanyl products were proven to be effective from 15 min after administration in the treatment of breakthrough pain. The first studies comparing immediate release fentanyl with immediate release morphine or oxycodon also found superiority for the new fentanyl products.