PureDefense w/NAC

PureDefense w/NAC

Pure Encapsulations4.8 (12 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 60 servings
$79.00 $1.31 per serving
Pure FormulasLowest$79.00iHerb$79.00Vitacost$79.03

About this product

NAC at 450 mg is the leading active, supported by 250 mg of EpiCor and 200 mg of elderberry extract. Vitamin C, vitamin D3, and zinc add familiar micronutrients, although EpiCor is supplied at half the amount found in many focused products.

Quercetin is present at only 25 mg, so it plays a minor role. Vitamin D appears twice at the same amount under two form descriptions, creating uncertainty about whether the total is 25 mcg or 50 mcg.

Sixty servings provide a two-month supply, but the serving cost is high and only a small number of reviews are available. It fits adults who specifically want NAC and a broad supporting blend, not shoppers seeking the cleanest value or clearest label.

Who is it for
  • Adults specifically seeking NAC with yeast fermentate
  • People wanting several immune-related ingredients in one formula
  • Users comfortable with a two-capsule serving
Best for
  • Combining NAC, EpiCor, and elderberry
  • Replacing several separate capsules
  • A broad rather than minimalist approach

Pros

  • Provides 450 mg of NAC
  • Combines yeast fermentate with vitamin C, vitamin D, and zinc
  • Includes 60 servings

Cons

  • EpiCor amount is lower than many focused products
  • Vitamin D appears duplicated in the supplied ingredient data
  • Quercetin contributes only 25 mg

Warnings

  • NAC may interact with nitrate medicines such as nitroglycerin and may increase headache or low-blood-pressure effects.
  • Clarify the total vitamin D amount on the package because the supplied data lists 25 mcg twice under overlapping form names.
  • Elderberry can be inappropriate for people specifically advised to avoid immune-stimulating botanicals.

Product analysis

71 out of 100
Broad coverage led by NAC is useful, but half-dose EpiCor, minimal quercetin, unclear vitamin D accounting, and high cost limit the formula.

AI assessment of the formula, label and price. How scoring works

Nutrient quality83

Branded dried yeast fermentate provides a clearly identified Saccharomyces-derived ingredient. The yeast-derived active has a modest supporting amount.

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Ingredient transparency82

Every supplied active ingredient has a specific amount. No proprietary blend hides a meaningful active dose.

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Customer satisfaction55

The supplied aggregate rating is strong, although no specific comments are included. The limited rating count reduces confidence in the aggregate result.

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Value for money58

Formula quality provides reasonable support for the product positioning. Serving utility appears weak, while opaque or lightly dosed additions reduce efficiency.

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Format
Capsule
Container
120 Capsule(s)
Per serving
$1.31
Customer rating
4.8 · 12 ratings
Report analysis

Ingredients

IngredientAmount per servingScore
Vitamin C (Ascorbic Acid)
 250 mg
Vitamin D (Cholecalciferol, Vitamin D3)
 25 mcg
Zinc (Zinc Citrate)
 7.5 mg
N-Acetyl-L-Cysteine
450 mg
EpiCor (Yeast Fermentate, Dried)
 250 mg
European Elder (Elderberry) (Sambucus nigra) extract
200 mg
Quercetin
25 mg
Gluten Free Adults 18–50
Report overview
Loading alternative details
85 Performance

EpiCor Dried Yeast Fermentate 500 mg

California Gold Nutrition
A quality advantage for buyers seeking a different ingredient balance from PureDefense w/NAC is a simple, branded 500 mg EpiCor dried yeast fermentate formula in a longer supply. The substantial daily amount is clearly disclosed, though marker-level fermentate detail is limited.
83 Performance

Wellness EpiCor 500 mg

Source Naturals Wellness
A quality advantage for buyers seeking a different ingredient balance from PureDefense w/NAC is 500 mg EpiCor is combined with 50 mcg vitamin D3 in a compact wellness formula. The amounts are clear, but the dry capsule lacks a listed fat carrier and marker-level fermentate detail.
83 Performance

Rapid Immune Defense

Swanson
A quality advantage for buyers seeking a different ingredient balance from PureDefense w/NAC is a standalone 500 mg EpiCor serving keeps the active formula direct and easy to assess. The amount is substantial and clearly identified, while marker-level fermentate information remains limited.
85 Budget

EpiCor Dried Yeast Fermentate 500 mg

California Gold Nutrition
Lower recurring cost is the clearest advantage over PureDefense w/NAC, while the formula provides a simple, branded 500 mg EpiCor dried yeast fermentate formula. The substantial daily amount is clearly disclosed, though marker-level fermentate detail is limited.
82 Budget

EpiCor Plus Immunity

NOW
Lower recurring cost is the clearest advantage over PureDefense w/NAC, while the formula provides 500 mg EpiCor is paired with vitamin C, vitamin D3, zinc bisglycinate, selenium, and olive leaf extract. The broader immune-oriented profile uses a useful zinc form, though the olive-leaf marker amount is modest.
82 Budget

EpiCor 500 mg

Source Naturals Wellness
Lower recurring cost is the clearest advantage over PureDefense w/NAC, while the formula provides 500 mg EpiCor is paired with vitamin D3 for focused daily wellness support. Both amounts are clear, but the capsule has no listed fat carrier and the fermentate lacks marker-level detail.
82 Value

EpiCor 500 mg

Healthy Origins
Lower recurring cost paired with a focused 500 mg dried yeast fermentate serving avoids unrelated active ingredients creates a useful value trade-off versus PureDefense w/NAC. The amount is substantial, although source and fermentate marker details are limited.
81 Value

Immune & Nasal Defense

Life Extension Florassist
Lower recurring cost paired with 500 mg EpiCor is paired with Lactobacillus rhamnosus CRL 1505 for added nasal and immune-oriented coverage creates a useful value trade-off versus PureDefense w/NAC. The bacterial ingredient is listed by weight rather than a viable count, which limits potency assessment.
77 Value

Immune Boost

Natrol
Lower recurring cost paired with 500 mg EpiCor is combined with vitamin C, vitamin D3, zinc, and selenium for broader immune-oriented coverage creates a useful value trade-off versus PureDefense w/NAC. Zinc oxide is a weaker form than better-absorbed alternatives, and the selenium amount deserves attention when combined with other supplements.
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