Zinc Gluconate

Pick your strength first. Within each strength the packages are listed cheapest first, priced per 15 mg so different bottles compare fairly. Strengths are never compared against each other.

30 mg per serving

1 product

Brand	Per 15 mg	Bottle	Verification
Nature Made 100 tablets A · Certified	6.90¢ delivered	$5.79 buy	A · Certified

50 mg per serving

3 products

Brand	Per 15 mg	Bottle	Verification
BulkSupplements.com 365 capsules · cheapest here D · None located	1.23¢ + delivery	$14.97 buy	D · None located
Nutricost 180 tablets D · None located	1.83¢ + delivery	$10.97 buy	D · None located
Nutricost 240 capsules D · None located	2.12¢ + delivery	$16.97 buy	D · None located

Common questions

How much does zinc cost per dose?

What 15 mg of elemental zinc costs at each labeled strength we price, cheapest to most expensive, with the salt each panel names. Before delivery.

Do third-party tested supplements cost more?

Per category, the cheapest product we track beside the cheapest a certifier names at the exact package, if any, within one format and, where it matters, one strength.

Is BulkSupplements third party tested?

Every BulkSupplements product we track, by whether a certifier names the exact package sold, only another size, or nothing we found. With listing IDs.

What does chelated zinc mean on a label?

Chelated is mostly a shopping word. What the panels of the products sold under it actually name, which panels print the word, and the price per 15 mg.

What is the cheapest zinc per dose?

Every zinc we track, priced per 15 mg of elemental zinc, salt against salt at each labeled strength and never across strengths.

Which zinc brands are third-party tested?

Every zinc we track, grouped by whether a certifier lists the exact bottle sold, another size, or nothing we found. Absence is not a verdict.

Zinc picolinate vs gluconate: what is the difference?

What each form costs per 15 mg of elemental zinc at the strengths both are sold at, and what the Supplement Facts panels name. Absorption is not compared.

Is BulkSupplements zinc NSF certified?

Which BulkSupplements zinc products NSF Certified for Sport names at the exact package sold, which it does not, and the listing IDs behind each.

Is Thorne zinc NSF certified?

Thorne zinc picolinate and bisglycinate checked bottle by bottle in NSF’s Certified for Sport database, including the bottle sold with the mark on it.

What is the cheapest NSF certified zinc?

Every zinc we track whose exact bottle NSF names in its Certified for Sport database, ranked by cost per 15 mg of elemental zinc within each labeled strength.

Zinc bisglycinate vs picolinate: what is the difference?

What each form costs per 15 mg of elemental zinc at the strengths both are sold at, and what each Supplement Facts panel names. Absorption is not compared.

Which supplements are NSF Certified for Sport?

Every package we price that NSF names in its Certified for Sport database, by category, with the listing IDs and what each listing actually covers.

Do supplement prices actually change?

We keep every price reading we take: daily where a store can be read automatically, less often where it is read by hand. Which prices have moved since we started, which have not, and by how much.

How many capsules is one serving?

How many pills the label calls one serving, across every capsule, tablet and softgel we have a price for, and what that does to the count on the front of the bottle.

Is Nature Made third party tested?

Every Nature Made product we price, checked against USP’s Verified Products directory, NSF’s Certified for Sport database and its own label, product by product.

Every zinc question in one place

About these numbers

What “per dose” means here: 15mg elemental zinc

15 mg of elemental zinc is a round number inside the range zinc labels print, chosen so that capsules of very different strengths are priced on the same amount of the mineral. Signed off by Dan on September 14, 2026 as the category yardstick, on the same footing as the others: a unit for comparing prices, not a recommended intake, and it cannot change which product is cheapest, because every product is scaled by the same number. Compared on elemental zinc as printed on the panel, never on the weight of the salt. The reference is cited for the yardstick alone, and this rationale deliberately makes no claim about what intake guidelines say.

Compared on elemental zinc as printed on the panel, never on the weight of the salt (picolinate, bisglycinate, citrate, gluconate, sulfate). Same trap as magnesium: the salt weight can be several times the zinc it carries.

Source: NIH Office of Dietary Supplements, Zinc - Health Professional Fact Sheet · not yet read

Where the data comes from

Every claim links to its source. Products, prices and certification listings are read from the retailers' own stores and the certifiers' own databases, and each figure links to the record it came from, so you can check any of them.

Where a servings-per-container figure was not read from the package's own panel, the product page says how it was worked out.
Amazon and Walmart are not included, so “cheapest” means cheapest among the retailers we track.
Prices go stale. Each one shows when it was last checked, and says so when it is older than the retailer allows us to cache it.
iHerb prices cannot be refreshed automatically. iHerb has not given us access to its price data, so those prices are marked stale until they are re-read. Each retailer offer carries its own check date.

Found something wrong? Tell us. Corrections are the point.

How we make money

No Buy button on this page earns us anything. The only links on the site that can are the Amazon links shown below the price comparison on some product pages, outside the comparison, and each says so beside it.

Commission will play no part in what we list, how it ranks, or which link we send you to. The Buy button points at the lowest price we have recorded even when that retailer pays us nothing.