Premier Research Labs

Premier Research Labs Zinc Assay

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An essential mineral for life, zinc plays a key role in many important physiological functions as well as providing important immune, digestion and reproductive support.

PRL’s Zinc Assay is in sulfate heptahydrate form.


Serving Size 1 Tsp (5 mL)
Zinc 10 mg
as Zinc Sulfate Heptahydrate
Other Ingredients: Purified Water.
Please note: Due to the natural components of Premier Research Lab’s supplements, ingredient levels may change between product batches. Please refer to product label if uncertain.


Take 1 teaspoon in water or juice, 2 times daily.


Nutritional supplements should be stored in a cool, dry place, with caps tightly closed, and out of reach from children. Take only as directed.