BioStacks
Solgar

Dry Vitamin A, 1,500 mcg (5,000 IU)

1 Tablet · 100 servings · $0.07/serving

iHerbAmazon

Best for

Immune

Ingredients (2)

Vitamin A

100%

Dose

1500 mcg

Target

700–1500 mcg

Form

Standard

Vitamin C

4%

Dose

10 mg

Target

250–2000 mg

Form

Budget

Other Ingredients (5)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

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

Dicalcium PhosphateBinder

Calcium and phosphorus compound used as binder

Microcrystalline CelluloseBinder

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

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.

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