Novel pharmaceutical compositions for treating chronic pain and pain associated with neuropathy
申请人:Singh Ulagaraj Chandra
公开号:US20080058362A1
公开(公告)日:2008-03-06
Chronic pain is alleviated in a mammal suffering there from by administering to the mammal a chronic pain alleviating amount of a nontoxic N-methyl-D-aspartate receptor antagonist such as dextromethorphan, dextrorphan, ketamine or pharmaceutically acceptable salt thereof, in combination with a μ-opiate analgesic such as tramadol or an analogously acting molecular entity, and a capsaicin or an ester of capsaicin, and optionally in sustained release dosage form.
Provided are nutraceutical or dietary supplemental compositions comprising esterified capsaicinoids. The esterified capsaicinoids may converted to the active parent capsaicinoid compound following enzymatic or chemical hydrolysis. In various embodiments, these esterified capsaicinoids have a higher lipophilicity, lipid solubility and result in less irritation to the stomach than the parent capsaicinoid, and hence may be included in certain dietary supplement formulations, including capsules, pills and tablets dietary supplement formulations. The dietary supplement compositions may be used for pain management in mammals in vivo and/or in the treatment of various pathological conditions in humans.
The present invention relates to the formulations of ester derivatives of capsaicin and ester derivatives of myristoleic acid. These derivatives are capable of reverting to the active parent compound following enzymatic or chemical hydrolysis. These derivatives have a higher lipophilicity, lipid solubility and less irritation to the skin than the parent compound, and hence are better able to be incorporated into certain pharmaceutical formulations, including cream and ointment pharmaceutical formulations. The pharmaceutical compositions of the present invention contain a compound of following formula (Ia):
R—CO-CAP (Ia)
wherein CAP refers to collectively the capsaicins represented in
FIG. 1
and a compound of formula (Ib):
MCO-O—R (Ib)
wherein MCO refers to myristoleic acid.
In formulae Ia and Ib, R is selected from alkyl groups of up to about 18 carbon atoms and aryl groups of up to about 18 carbon atoms and alkylene group of up to about 18 carbon atoms and an arylene group of up to about 18 carbon atoms. The alkyl, aryl and alkylene groups may be substituted or un-substituted, branched or straight chains. In addition, R may contain heteroatoms and may be straight chained or branched.
The pharmaceutical compositions containing compounds of formulae Ia and Ib are useful for pain management in mammals in vivo and have been contemplated to be used in the treatment of various pains in humans.
Novel Pharmaceutical Compositions for Treating Chronic Pain and Pain Associated with Neuropathy
申请人:Singh Chandra U.
公开号:US20130189354A1
公开(公告)日:2013-07-25
The present invention relates to compositions and methods for treating pain wherein the compositions comprise a combination of tramadol or a pharmaceutically acceptable salt thereof, magnesium or a pharmaceutically acceptable salt thereof; and gabapentin or pregabalin. The therapeutic combination can further contain capsaicin or an ester of capsaicin.
PHARAMACEUTICAL COMPOSITIONS FOR TREATING CHRONIC PAIN AND PAIN ASSOCIATED WITH NEUROPATHY
申请人:Singh Chandra Ulagaraj
公开号:US20110039875A1
公开(公告)日:2011-02-17
The present invention provides methods and compositions for the treatment of neuropathic pain. In certain embodiments, compositions comprising an dextromethorphan (or other N-methyl-D-aspartate receptor antagonist), tramadol, and gabapentin can synergistically act to reduce pain in a human patient. Pharmaceutical compositions may also comprise a capsaicinoid, an esterified capsaicinoid, and/or a tricyclic antidepressant.