NOW Supplements Zinc (Zinc Gluconate) 50 mg Supports Enzyme Functions* Immune Support* 100 Tablets
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This zinc supplement features zinc gluconate, a bioavailable form of zinc that supports immune function and enzyme activity. The formulation is simple, with minimal additives like microcrystalline cellulose and magnesium stearate, which are common and generally considered safe in supplements. The absence of artificial sweeteners, dyes, or excessive fillers contributes to its high score.
Key ingredients 4
Zinc GluconateGood
Zinc gluconate is a beneficial form of zinc that supports immune function and enzyme activity. It is well-absorbed and commonly used in supplements for its bioavailability. Zinc is essential for numerous biological functions, including DNA synthesis and cell division.
Risks
Excessive intake of zinc can lead to toxicity, causing nausea and interfering with copper absorption.
Benefits
Zinc is crucial for immune health and wound healing, and it plays a role in maintaining skin integrity and vision.
Microcrystalline CelluloseNeutral
Microcrystalline cellulose is a common filler and binder used in supplements to provide structure. It is derived from plant fibers and is generally considered safe for consumption. It does not contribute any nutritional value but aids in the manufacturing process.
See more about Microcrystalline Cellulose →Magnesium StearateNeutral
Magnesium stearate is used as a flow agent in supplement manufacturing to prevent ingredients from sticking to equipment. It is a salt of stearic acid and magnesium and is generally recognized as safe. While it is often criticized for potential bioavailability issues, these concerns are largely unsupported by scientific evidence.
See more about Magnesium Stearate →Silicon DioxideNeutral
Silicon dioxide is used as an anti-caking agent to prevent clumping in powdered supplements. It is a naturally occurring compound found in the earth's crust and is considered safe for consumption. It does not affect the nutritional profile of the supplement.
See more about Silicon Dioxide →Processing
Processed Foods
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