Rapid Immune Defense

Rapid Immune Defense

Swanson4.7 (726 ratings)
Format:Capsule Quantity: 30 Capsule(s) · 30 servings
$17.49 $0.58 per serving
iHerbLowest$17.49iHerb$17.49

Product analysis

58 out of 100

Rapid Immune Defense uses a single identified yeast ingredient, making its contents straightforward to compare.

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

Nutrient Quality40

The yeast species is identified, making the basic ingredient clear. Its preparation quality cannot be compared confidently.

Ingredient Transparency100

The ingredient amount and form are disclosed. That makes the single-ingredient serving straightforward to identify and compare.

Value For Money40

A reliable value comparison is unavailable for the yeast ingredient. Its simple ingredient list alone does not establish whether the serving is good value.

Customer Satisfaction79

Customer ratings are very positive. A moderate review base supports that satisfaction picture without establishing immune effects.

Product Focus40

The single yeast ingredient keeps the formula simple. A specific immune benefit or rapid effect cannot be judged confidently.

Format
Capsule
Container
30 Capsule(s)
Per serving
$0.58
Customer rating
4.7 · 726 ratings
Report analysis

Ingredients

IngredientAmount per servingScore
EpiCor (Saccharomyces cerevisiae)
 500 mg
Adults 18–50
Report overview
85 Performance

EpiCor Dried Yeast Fermentate 500 mg

California Gold Nutrition
A quality advantage for buyers seeking a different ingredient balance from Rapid Immune Defense 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 Rapid Immune Defense 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.
82 Performance

EpiCor 500 mg

Healthy Origins
A quality advantage for buyers seeking a different ingredient balance from Rapid Immune Defense is a focused 500 mg dried yeast fermentate serving avoids unrelated active ingredients. The amount is substantial, although source and fermentate marker details are limited.
85 Budget

EpiCor Dried Yeast Fermentate 500 mg

California Gold Nutrition
Lower recurring cost is the clearest advantage over Rapid Immune Defense, 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 Rapid Immune Defense, 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 Rapid Immune Defense, 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.
81 Value

Immune & Nasal Defense

Life Extension Florassist
The serving cost does not improve on Rapid Immune Defense, but 500 mg EpiCor is paired with Lactobacillus rhamnosus CRL 1505 for added nasal and immune-oriented coverage, which may offer better value for someone seeking that ingredient profile. The bacterial ingredient is listed by weight rather than a viable count, which limits potency assessment.
77 Value

Immune Boost

Natrol
The serving cost does not improve on Rapid Immune Defense, but 500 mg EpiCor is combined with vitamin C, vitamin D3, zinc, and selenium for broader immune-oriented coverage, which may offer better value for someone seeking that ingredient profile. Zinc oxide is a weaker form than better-absorbed alternatives, and the selenium amount deserves attention when combined with other supplements.
76 Value

Fermented Beta Glucans

Dr. Mercola
The serving cost does not improve on Rapid Immune Defense, but 500 mg yeast fermentate is paired with 400 mg fermented Euglena for broader fermented beta-glucan coverage, which may offer better value for someone seeking that ingredient profile. Strain, production, and active-marker details are limited, so potency is harder to compare.
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