Any supplements that may mimic the effects of Lamotrigine on ketemine?
In principle, what lamotrigine does is it inhibits the release of a particular neurotransmitter in the brain called glutamate. So in theory, anything that is a glutamate antagonist should act like lamotrigine, but in reality no supplement will mimic what a strong pharmaceutical drug would offer, not to mention that lamotrigine's exact mechanism of action is not well understood.
That being said there is a supplement called
NAC (N-acetyl-cysteine) which is thought to regulate levels of glutamate. This supplement is gaining a lot of traction due to its therapeutic use for other mental health disorders [
link].
Lithium, as well as iodine and boron, can assist also in lowering glutamate [
link]. But you shouldn't just supplement these arbitrarily because an excess of these may cause another imbalance. A healthy diet is in my opinion a better option to making sure you are getting all the micronutrients you need.