Antioxidant support | Oxidative stress | Selenium + NAC A novel formulation designed to combat oxidative stress at the cellular level. SelNAC™ combines highly bioavailable organic selenium with N-acetyl cysteine (NAC) - two nutraceuticals that work synergistically to enhance each other's antioxidant activity in one optimized formula. Oxidative stress occurs when free radicals outpace your body's ability to neutralize them - contributing to immune dysfunction, accelerated aging, and chronic inflammation. Selenium and NAC address this at the cellular level through two complementary pathways: selenium activates glutathione peroxidase, your body's primary antioxidant enzyme, while NAC directly replenishes glutathione stores. Together, they don't just add up — they amplify each other. Medicinal Ingredients (per capsule): Selenium (selenium-enriched yeast) — 200 mcg N-Acetyl-L-cysteine (NAC, synthetic) — 500 mg 60 vegetable capsules. Non-GMO. Canadian-formulated. For comprehensive immune support, many ImmunoCeutica customers pair SelNAC with ImmunoDrops Vitamin D3 + K2 — addressing both oxidative stress and the vitamin D deficiency that affects the majority of Canadians, particularly in winter months.