Zinc
Research, explainedZinc is essential. More is not automatically better quality; high intakes can interfere with copper absorption.
What was studied
In 15 healthy adults, 10 mg zinc was tested without food. Citrate and gluconate had similar absorption, higher than oxide.
What remains uncertain
A small absorption trial proves neither an immune benefit nor brand superiority. Results with a meal may differ.
Understanding the form
Citrate and gluconate have direct comparative data. Picolinate, bisglycinate and other forms receive no unsupported premium rating here.
Reviewed: 2026-09-05 · Ingredient research does not test this product or its batch.