Patent ID: 7201920

Claim:
A therapeutic pharmaceutical composition comprising a mixture including (a) at least one opioid analgesic selected from the group consisting of alfentanil, buprenorphine, butorphanol, carfentanil, codeine, dezocine, diacetylmorphine, dihydrocodeine, dihydromorphine, diprenorphine, etorphine, fentanyl, hydrocodone, hydromorphone, β-hydroxy-3-methylfentanyl, levo-α-acetylmethadol, levorphanol, lofentanil, meperidine, methadone, morphine, nalbuphine, oxycodone, oxymorphone, pentazocine, pethidine, prepoxyphene, remifentanil, sufentanil, tilidine, tramadol and a pharmaceutically acceptable salt thereof; (b) gel forming polyethylene oxide at about 3 to 40% by weight; (c) at least one disintegrant at about 2 to 25% by weight, selected from the group consisting of crospovidone, sodium starch glycolate, and croscarmellose sodium; and (d) a nasal tissue irritant, wherein the composition functions such that less than about 50% of the total amount of opioid analgesic in the composition is recovered when about 490 mg. of the composition is contacted with 15 ml of water.