je ne sais pas répondre directement à ta question. Voilà ce que je pense pouvoir dire :
Je ne pense pas que le magnésium puisse être surdosé.
Je sais que le calcium peut être un déclencheur d'excitotoxicité dans le déséquilibre gaba/glutamate.
To complicate things further, glutamate has the ability to bind with six other receptors in the brain, like the NMDA receptor, which assists in delivering calcium to the cell and plays a vital role in memory function and synaptic plasticity. Calcium is used by glutamate as the agent that actually inflicts the harm on the cell. So, if there is an excess of calcium in the body for any reason, it too will contribute to the GABA and glutamate imbalance.
Glutamate and calcium together cause ongoing firing of the neurons, which triggers the release of inflammatory mediators, which leads to more influx of calcium. It becomes a vicious cycle that results in neural inflammation and cell death. Glutamate has been described as the gun, while calcium should be seen as the bullet, says Dr. Mark Neveu, a former president of the National Foundation of Alternative Medicine. It’s important to note that activation of the NMDA receptor also involves glycine, D-serine or D-alanine, which means either one of these could allow for more influx of calcium as well.
Magnesium will help regulate calcium levels and so can zinc. However, higher doses of zinc (more than 40mg per day) can also activate the release of glutamate through non-NMDA glutamate receptors, so one must exercise caution with zinc. However, if calcium is excessively high, other herbs or nutrients may be used to bring it down, like lithium orotate, Boswalia or wormwood. Lithium, as well as iodine and boron, can also assist in lowering glutamate. Calcium intake in food may need to be reduced or limited if calcium is too high. Magnesium is also able to bind to and activate GABA receptors.
If one exhibits low levels of calcium, Dr. Amy Yasko recommends using nettle or chamomile to increase calcium levels, rather than supplementation of calcium itself, if we are dealing with someone who has an imbalance in GABA and glutamate. Vitamin K & D would be important as well. If supplemental calcium is used it should be accompanied by magnesium, both in citrate form, which will help control the excitotoxin activity.
http://www.holistichelp.net/blog/how-to ... glutamate/