Lumiracoxib is effective in the treatment of episodic tension-type headache.
OBJECTIVE
To evaluate the efficacy of single doses of lumiracoxib, the most selective cyclo-oxygenase (COX)-2 inhibitor, in the treatment of episodic tension-type headache (ETTH), with particular emphasis on time to onset of analgesia.


BACKGROUND
ETTH is the most frequently occurring type of headache with an annual prevalence rate of up to 40%. Some patients with ETTH do not respond to currently available therapies, thus an effective analgesic is needed that provides a rapid onset of analgesia alongside significant pain relief. Lumiracoxib is the most selective COX-2 inhibitor developed for the treatment of acute and chronic pain.


METHODS
In this single-center, randomized, double-blind, double-dummy, placebo-controlled, parallel-group study, patients with ETTH were randomly assigned to receive single-dose lumiracoxib (200 or 400 mg, n = 60 in each group) or placebo (n = 30) within 1 hour of an ETTH. Efficacy was assessed over a 3-hour period, the primary efficacy variable being the time to onset of analgesia. Other efficacy variables included summed pain intensity difference from 0 to 3 hours after dosing, time-specific pain intensity difference, time-specific pain relief, time-specific pain relief intensity difference, total pain relief over 0 to 3 hours, patient's global evaluation of treatment effect, the proportion of patients who achieved onset of analgesia by 1 hour and time to rescue medication intake. Safety was assessed by monitoring and recording of all adverse events (AEs).


RESULTS
The median time to onset of analgesia was significantly faster for lumiracoxib 200 mg (47 minutes; 95% confidence interval [CI]: 41, 52) and lumiracoxib 400 mg (41 minutes; 95% CI: 36, 48) than for placebo (>3 hours; both P < .001). Both doses of lumiracoxib were significantly superior to placebo for all secondary efficacy variables. There were no AEs recorded in any treatment group.


CONCLUSIONS
Single 200 or 400 mg doses of lumiracoxib provided rapid and effective relief from the acute pain associated with ETTH.
Packman
Elias
E
Institute for Applied Pharmaceutical Research, Philadelphia, PA, USA.
Packman
Barry
B
Thurston
Helen
H
Tseng
Lillian
L
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D016861:Cyclooxygenase Inhibitors / Q000627:therapeutic use; D004008:Diclofenac / Q000031:analogs & derivatives; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009930:Organic Chemicals / Q000627:therapeutic use*; D018781:Tension-Type Headache / Q000188:drug therapy*; D016896:Treatment Outcome
D016861:Cyclooxygenase Inhibitors; D009930:Organic Chemicals; D004008:Diclofenac; C473384:lumiracoxib