PureDefense w/NAC

PureDefense w/NAC

PureDefense w/NAC

Brand Pure Encapsulations
Unit Size 120 vegetarian capsules
Properties Gluten Free; GMO Free
Western Symptomology Immunodeficiency; Frequent colds
English name PureDefense w/NAC
(0 reviews)  

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Expected Resupply Date: Unknown

Benefits & Features

  • Supports first-line immune defense and overall immune health*
  • Provides support for upper respiratory tract health*
  • Promotes antioxidant protection*
  • Features EpiCor® saccharomyces cerevisiae fermentate, NAC, nutrients and flavonoids
  • Offered in both 120-count bottle and convenient blister pack box designed for travel or short-term dosing
  • Made with high-quality ingredients backed by verifiable science


  • Ages 18 and up
  • Immune function and upper respiratory health support*

Suggested Use

As a dietary supplement, take 2 capsules, twice daily, with meals.

Science & Research

Verifiable Science

Natural killer cells are part of the body's innate, or first-line, immune response. They respond more quickly than the adaptive immune system comprised of B cells and T cells. Once activated, natural killer cell activity peaks in as quickly as several hours, providing rapid support and wide-range immune defense. EpiCor® is a fermentate of Saccharomyces cerevisiae containing various bioactive metabolites. These nutrient metabolites are produced in a specialized fermentation process and enhance immune cell production. In one cellular study, EpiCor® promoted natural killer cell activation, as well as that of B cells and T cells.1 In two randomized, double-blind, placebo-controlled trials, EpiCor® provided statistically significant support for upper respiratory tract health and overall immune health.2,3 A separate open label, in-house trial indicated a strong potential for EpiCor® supplementation to enhance secretory IgA levels after 30 days. These various actions demonstrate the ability of EpiCor® to address both innate and adaptive immune responses.4 NAC (n-acetyl-l-cysteine) promotes endogenous glutathione production for antioxidant protection and provides lung defense mechanisms for healthy respiratory function.5 In a randomized, double-blind trial involving mostly older individuals, NAC showed support for respiratory health.6 Quercetin and elderberry provide flavonoids that offer additional support for immune and respiratory function while vitamin C, vitamin D and zinc play important roles in immune cell activation.7,8,9,10*


  1. Jensen GS, et al. J Med Food. 2015 Mar;18(3):378-84.
  2. Moyad MA, et al. Urol Nurs. . 2008 Feb;28(1):50-5.
  3. Talbott SM, et al. J Am Coll Nutr. 2012 Aug;31(4):295-300.
  4. Jensen GS, et al. J Med Food. 2011 Sep;14(9):1002-10.
  5. Sutherland ER,Crapo JD, Bowler RP. COPD. 2006 Dec;3(4):195-202.
  6. De Flora S, et al.Eur Respir J. 1997 Jul;10(7):1535-41.
  7. Nieman DC, et al.Med Sci Sports Exerc. 2007 Sep;39(9):1561-9.
  8. Roschek B Jr, et al. Phytochemistry. 2009 Jul;70(10):1255-61.
  9. Wintergerst ES, et al. Ann Nutr Metab 2006;50(2):85-94.
  10. Hossein-nezhad A, et al. PLoS One. 2013;8(3):e58725.

Additional Information


If you are pregnant or lactating, have any health condition or are taking any medications, particularly immunosuppressants, consult your health professional before use.


Store in a cool, dry place.


  • Ascorbic acid is derived from corn dextrose fermentation
  • Vitamin D is derived from lanolin
  • Zinc is derived from earthen ore
  • N-acetyl-l-cysteine is derived from duck feather
  • Epicor® dried yeast fermentate complex is derived from Saccharomyces cerevisiae
  • Elderberry extract is derived from Sambucus nigra fruit
  • Quercetin is derived from the Fava d'anta tree (Dimorphandra mollis) pods and Cat's claw (Uncaria tormentosa) leaves
  • Ascorbyl palmitate is derived from corn dextrose fermentation and palm oil

Serving Size: 2 Capsules
Servings Per Container: 60

Amount Per Serving / % DV

Vitamin C (As Ascorbic Acid) 250mg / 417%
Vitamin D (As Cholecalciferol) (D3) 1‚000 IU / 250%
Zinc (As Zinc Citrate) 7.5mg / 50%
N-Acetyl-L-Cysteine (Free-Form) 450mg / *
EpiCor® Dried Yeast Fermentate Complex 250mg / *
(From Saccharomyces Cerevisiae)
European Elder (Elderberry) (Sambucus Nigra) Extract (Fruit) 200mg / *
Quercetin 25mg / *

*Daily Value not established.

Other Ingredients: Vegetarian capsule (cellulose‚ water)‚ ascorbyl palmitate.

Sourced and manufactured to avoid: Artificial additives‚ allergens‚ GMOs‚ environmental contaminants‚ added excipients.


Quercenol large

SKU: WT229

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