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Pregabalin is a novel GABA-analogue approved for the treatment of partial onset seizures, neuropathic pain, and general anxiety disorder. Pregabalin has been classified as a Schedule V drug with a low risk of inflicting abuse or addiction. However, some publications have indicated that pregabalin may have a potential for abuse among patients with past or current opiate addiction.
Aims:
We hypothesized that pregabalin might be abused my patients who were undergoing an opiate replacement therapy and never had an indication for taking pregabalin on medical grounds.
Methods:
Urine specimens from 124 patients with opiate dependency syndrome and from 111 patients with other addiction disorders (alcohol, benzodiazepines, cannabis, amphetamines) were screened for pregabalin by means of a mass spectrometer analysis.
Results:
We found 12.1% of all urine specimens from patients with opiate addiction to be positive for pregabalin. None of the patients concerned had a medical indication for using pregabalin. In the control group, 2.7% of the patients were tested positively for pregabalin, due to their taking it regularly for chronic pain or general anxiety.
Conclusions:
Our data suggest that pregabalin is liable to be abused among patients with opiate dependency syndrome. Thus, vigilance and caution are called for when patients with a past or current opiate dependency are exposed to treatment with pregabalin.
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