Swanson **Chelated Zinc** delivers a full 30mg per capsule for immune support, sitting right at the top of zinc's clinical range (15–30mg). That's the dose where the evidence is strongest — meta-analyses show zinc can cut common cold duration by roughly a third. One capsule a day gets you the complete dose.
The form here is zinc bound to glycine (a glycinate chelate), one of the best-absorbed supplemental forms your body can put to use. Taking it with food keeps it easy on your stomach.
One thing to watch is your total daily zinc. At 30mg you're under the 40mg safe upper limit on its own, but if you also run a multivitamin or other zinc sources, sustained intake above 40mg/day can deplete your copper — pairing with 1–2mg copper helps if you're stacking. For everyday immune support, 30mg once daily is all you need.
Other Ingredients (6)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
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
Citric AcidAcidulant
Natural acid derived from citrus fruits
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycineAmino Acid
Non-essential amino acid; smallest of the 20 proteinogenic amino acids. Mildly sweet taste — sometimes used as a low-glycemic flavor modifier in addition to its bioactive role
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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.