BioStacks
Swanson

Ultimate Immune Defense

2 Capsules · 30 servings · $0.42/serving

55 / 100Average

Score Breakdown

Formulation
77
Safety
72
Final score
55/100

Ingredients (4)

Vitamin D3

100%

Dose

5000 IU

Target

1000–5000 IU

Form

Premium

Zinc

100%

Dose

15 mg

Target

15–30 mg

Form

Premium

Vitamin C

100%

Dose

1000 mg

Target

250–2000 mg

Form

Budget

Elderberry Fruit Extract

33%

Dose

100 mg

Target

300–600 mg

Form

Other Ingredients (5)

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.