(4) Another approach to easing the hyperaroused "wired" mental state is by increasing the GABA system activation, as GABA relaxes the neuron. The classic approach to this involves taking benzodiazepines such as clonazepam (
Klonopin). Benzodiazepines are GABA receptor positive allosteric modulators, which means they make the GABA receptor more responsive to the GABA neurotransmitter, and in this way, boost the GABA system.
However, the problem with treatments such as benzodiazepines that work on the GABA system is the issue of tolerance and withdrawal symptoms. Tolerance means the loss of effect of the drug over time. And withdrawal symptoms to benzodiazepines can sometimes be quite nasty. One
survey of ME/CFS patients taking Klonopin found that 36% experienced no withdrawal symptoms; 32% experienced minor or moderate withdrawal symptoms; but 32% experienced severe or very severe withdrawal symptoms.
So benzodiazepines like Klonopin come with a risk of possible tolerance, and possible severe withdrawal symptoms.
Tolerance and withdrawal symptoms are in fact found with many supplements and drugs that work on the GABA system. That is why in general I think the best to approach to reducing brain over-stimulation and hyperarousal is by working on the glutamate / NMDA side of the seesaw, using the above approaches (1), (2) and possibly (3). This is because there are no tolerance and withdrawal problems with glutamate / NMDA treatments. It's only with GABA treatments that tolerance and withdrawal issues can occur.
However, there are some effective GABA treatments that do not suffer from tolerance and withdrawal problems:
kava kava root (Piper methysticum) 300 mg once ot twice daily is one such GABA treatment that works well, and does not appear to be subject to tolerance and withdrawal.
Kava kava seems to increase the GABAergic response by increasing the number of GABA binding sites.
1 So rather than producing a loss of effect over time (tolerance), conceivably kava may actually nicely increase GABA system sensitivity over time.
I find the relaxing effects of 300 mg of kava kava root kick in after around 2 hours.
Note that kava has on rare occasions has been associated with liver damage, but the WHO suggest that liver toxicity may only come from kava plant
leaves and stem. Kava
root appears safe. Acetone or ethanol extracts of the active ingredient are also questionable, but water extracts appear safe.
1