At 50 mg per caplet, this delivers a strong dose of **Zinc** — well above the 15–30 mg clinical range and actually exceeding the 40 mg tolerable upper intake level set for daily use. If you're taking this short-term for immune support, the dose is in line with what some acute-use studies have tested. For ongoing daily use, though, you'd want to be aware that sustained intake above 40 mg can interfere with copper absorption over time.

The form here is **zinc gluconate**, which is a standard-tier option. It's reasonably well absorbed but falls short of premium forms like picolinate or bisglycinate that deliver more zinc per milligram into your bloodstream.

The 400-caplet count makes this a high-value option if zinc is what you're after, but the dose is better suited to short-term or targeted use than an everyday habit. If you plan to take it daily long-term, splitting a caplet or choosing a lower-dose product would keep you within safer limits.

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BioStacks

Nature's Bounty

Zinc 50mg, 400 Caplets

caplet · 400 servings

64 / 100Good

Score Breakdown

Formulation
75
Safety
85
Final score
64/100

Ingredients (1)

Zinc50 mg

Above upper limit · Standard form

Label Nutrition Facts

Active Ingredients

From the label · % Daily Value

DV%

Zinc50 mg

455%

Other Ingredients

Fillers, coatings, and additives

5Safe

Silicon DioxideAnti-caking

Safe

Magnesium StearateLubricant

Safe

Dicalcium PhosphateBinder

Safe

Microcrystalline CelluloseBinder

Safe

Stearic AcidLubricant

Safe

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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.