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Both cross the bloodbrain barrier and have been shown to lower nighttime cortisol by dampening the hypothalamicpituitaryadrenal (HPA) axis, which in turn reduces stressinduced awakenings
The included studies showed notable geographical diversity, with the majority originating from Europe and Asia
Even though Amazon banned NAC for a short time, consumers could still get the supplement at their local health food store
If efficacy suddenly decreases or side effects change substantially despite using the same dose, suspect potency issues
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