For immune support and zinc repletion, this delivers 50mg of **Zinc** per capsule using two well-absorbed forms — OptiZinc (zinc monomethionine) and zinc citrate. Both are premium forms that your body absorbs efficiently, and OptiZinc is one of the most clinically studied branded zinc chelates. For immune support and general zinc status, this delivers well above the 15–30mg clinical range.
The trade-off is that 50mg exceeds the tolerable upper intake of 40mg per day. At this dose, long-term use can deplete your copper levels — something the label itself warns about. If you plan to take this daily for more than a few weeks, adding 2mg of supplemental copper is worth considering.
This is a straightforward, high-potency zinc supplement. If you're addressing a known deficiency or using it short-term for immune support, the dose makes sense. For everyday maintenance, you may want to take it every other day to stay closer to the studied range.
BioStacks
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Ingredients (1)
Zinc
100%Dose
50 mg
Target
15–30 mg
Form
Standard
Other Ingredients (4)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Vegetable StearateLubricant
A plant-derived salt of stearic acid (typically magnesium or calcium) used as a tablet lubricant
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.