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doi: 10.1691/ph.2007.5.6176, 39

They regulate capillary tone and diameter, thereby controlling CBF, a topic further elaborated in the subsequent section of this review

Plateau effects sometimes occur after initial rapid improvement

Stress and certain nutrient deficiencies may also contribute to low stomach acid levels

All applications are limited to in vitro research models

But here's what makes the glutathione vs NAC conversation more interesting: many of NAC's benefits come from its ability to raise glutathione levels, which means direct glutathione supplementation can often deliver similar or superior results when absorption is optimized