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In addition, mutations in ALDH7A1 in the lysine degradation pathway can also cause epilepsy that responds to P5P supplementation.[ref] Regulation of active B6: The cellular levels of P5P are fairly tightly regulated in the body with feedback loops and mechanisms in place

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A previous meta-analysis of NAC use in COPD found that it reduced the occurrence of exacerbations by roughly half over the treatment period, an effect somewhat attenuated by simultaneous steroid use, but not active smoking.Men with idiopathic infertility given 600mg per day had improvement in several semen parameters as well as plasma antioxidant status