At 50mg per tablet, this gives you well over the 15–30mg clinical range for immune and skin support — and also exceeds the 40mg tolerable upper limit. Your body can use the extra, but long-term daily use at this dose raises the risk of copper depletion, which is why the label itself says this product is not intended for long-term use.
**Zinc Gluconate** is a standard-absorption form. It gets the job done, but your body won't absorb it as efficiently as premium forms like picolinate or bisglycinate.
If you're using this short-term for immune support, the dose is more than adequate. For everyday maintenance, you'd want to either take it a few times per week rather than daily, or look for a lower-dose option closer to 15–30mg to stay within the safe long-term range.
BioStacks
Other Ingredients (4)
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
Coating (unspecified)Coating
Generic tablet coating declaration where the label does not itemize the coating's components; modern aqueous film coatings are typically cellulose-based (HPMC) with a plasticizer
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.