Zinc 30.

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

• Studied in people4 human studies on Zinc (as zinc picolinate) back this formula, each one cited.
• A mechanism that is settledHow Zinc (as zinc picolinate) works is settled pharmacology.
• Recent work on the recordThe most recent study on this record was published in 2014.
• Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
• The exact form, describedThe form on the label is Zinc picolinate chelate. The record says what that form is and what it suits.
• Full label disclosureEvery ingredient on this label carries its own declared amount.
• Where it comes from and how it is madeZinc (as zinc picolinate) is made by synthetic.
• Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

• Zinc (as zinc picolinate)about two to four weeks of daily intakeBuilds with daily use

  In a controlled feeding study in nine healthy men, six weeks of restricted zinc intake raised DNA strand breaks in peripheral blood cells, and four weeks of repletion at 11 mg a day, with 20 mg of supplemental zinc for the first seven days, reversed the rise. In a separate randomised placebo-controlled trial in 40 Ethiopian women eating a high-phytate diet, 20 mg a day of zinc sulfate for 17 days lowered mean comet tail moment from 39.7 to 30.0 while plasma zinc did not change significantly. Both windows were measured on a DNA damage marker in blood cells, not on a symptom.

  Song and colleagues 2009, American Journal of Clinical NutritionPMID 19515738

  Joray and colleagues 2015, Nutrition ResearchPMID 25491347

  Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

How each ingredient usually behaves over time.

One ingredient, from its own page.

• Zinc (as zinc picolinate)

  Nothing registers day to day. Where researchers looked, plasma zinc and taste sensitivity moved across two to twelve weeks of daily intake.

  Its own page, the plain answer on timing ↗

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

• Zinc picolinate

  Zinc chelated to two molecules of picolinic acid, a metabolite of tryptophan, usually supplied as the dihydrate. It carries about 21 percent zinc by weight, is poorly soluble in water and is handled as a dry chelate powder rather than a solution ingredient.

  Fits

  Daily capsules and tablets where a chelated organic form is wanted and where solubility is not a formulation constraint. Formulators reaching for it generally point to the 1987 tissue-marker crossover, still the only human head-to-head in which this form appears.

  Trade-off

  The human evidence is thin and old. The absorption case is a single 15-person trial from 1987 read out on hair, urine and erythrocyte zinc rather than isotope tracers, and it has not been replicated with modern methods. The largest outcome trial on this form, in taste disorder, found no difference from placebo on its subjective endpoints, with a difference on one objective measure and on serum zinc.

  The only human head-to-head involving this form is a 1987 double-blind, four-period crossover in 15 healthy volunteers, a foundational trial that has not been replicated with stable-isotope methods. Over four-week periods at 50 mg elemental zinc daily, hair, urine and erythrocyte zinc rose significantly during zinc picolinate (p < 0.005, p < 0.001 and p < 0.001) while zinc gluconate, zinc citrate and placebo produced no significant change in those markers, and serum zinc did not change significantly in any arm. In a later double-blind, placebo-controlled trial in 73 patients with idiopathic zinc-deficiency taste disorder at 29 mg zinc picolinate three times daily for three months, there was no significant difference from placebo in subjective symptoms or whole-mouth taste sensation, while filter-paper-disk testing and serum zinc both favoured the zinc group.

  Barrie 1987, Agents Actions (canonical foundational trial)PMID 3630857

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.

Because the effect builds and holds only with continued daily use, a steady recurring supply is the practical way to keep it going.