NOW Supplements Zinc (Zinc Gluconate) 50 mg Supports Enzyme Functions* Immune Support* 250 Tablets
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This zinc supplement contains zinc gluconate, a bioavailable form of zinc that supports enzyme functions and immune health. The formulation is simple, with minimal additives such as microcrystalline cellulose and magnesium stearate, which are common in tablet manufacturing. The absence of artificial sweeteners, dyes, or harmful preservatives contributes to its favorable rating.
Key ingredients 5
ZincGood
Zinc is an essential mineral that supports numerous enzyme functions and immune health. It is crucial for DNA synthesis, cell division, and protein synthesis. Zinc gluconate is a bioavailable form that is well-absorbed by the body.
Risks
Excessive intake of zinc can lead to toxicity, causing nausea, vomiting, and immune dysfunction.
Benefits
Zinc plays a vital role in immune function and wound healing, and it may reduce the duration of the common cold.
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 derived from vegetable sources and is generally recognized as safe. It does not provide nutritional benefits but ensures consistent product quality.
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. It is inert and does not react with other ingredients, ensuring product stability.
See more about Silicon Dioxide →Vegetarian CoatingNeutral
Vegetarian coating is used to encapsulate tablets, making them easier to swallow. It is typically made from plant-based materials and is considered safe for consumption. It does not affect the nutritional profile of the supplement.
Processing
Ultra-Processed Foods
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