Retigabine, ICA-069673 and ML213 reduced nociceptive reflexes to a similar extent.
ML213 showed a higher potency than the other compounds.
Unlike retigabine, ML213 and ICA-069673 affected non-nociceptive transmission.
Retigabine had nonspecific effects at high concentrations.
All effects of ICA-069673 and ML213 appear to be mediated specifically by Kv7 channels.