SubEx
Zinc·Support immunity·finding 11 of 21
★★☆Single study — solid evidence, such as one good trial or a large observational dataset, but not replicated at the top tier.

Other · single study

The best-known zinc cold tablet does not say how much zinc it has

Zicam Ultra RapidMelts is labelled homeopathically, so the pack names no quantity of elemental zinc. The trials that found an effect needed more than about 75 mg a day.

What the study found

America's best-known zinc cold tablet lists no zinc amount

Zicam Ultra RapidMelts is labelled homeopathically, as Zincum aceticum 2x and Zincum gluconicum 1x, so the pack names no quantity of elemental zinc. The trials that found an effect needed more than about 75 mg of zinc a day, and a buyer holding the box cannot tell whether they are near it.

The caveat · Unknown dose, not a proven low one

A label is a regulatory and marketing document, not evidence: the pack's stated purpose of reducing cold duration is a manufacturer claim made under the homeopathic route, not one a regulator reviewed. Nothing here says the product does or does not reach the dose the trials used, only that the label does not let you check. This is the oral tablet, a different product from the nasal gels that drew the smell-loss reports.