Neuroscience letters
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Neuroscience letters · Jun 1989
B-vitamins potentiate the antinociceptive effect of diclofenac in carrageenin-induced hyperalgesia in the rat tail pressure test.
B-vitamins possess antinociceptive and antiinflammatory activity. The rat tail pressure test was used to examine whether a mixture of the vitamins B1, B6, and B12, clinically used as Neurobion, has antinociceptive activity itself or potentiates the effect of the non-steroidal antiinflammatory drug (NSAID) diclofenac on carrageenin-induced hyperalgesia. ⋯ Nevertheless, lower doses which alone were lacking in activity (100-250 mg/kg B1 and B6, 1-2.5 mg/kg B12 p.o.) dose-dependently potentiated the antinociceptive of diclofenac. This result supports the clinical experience of a reduced need for diclofenac when B-vitamins are administered concomitantly.