zinc sulfate
Meaning of zinc sulfate: The soluble salt that actually delivers the element, unlike the insoluble oxide, which sits on the skin and delivers none of it.
Definition of zinc sulfate
Zinc sulfate is a water-soluble salt of zinc used to supply the element by mouth or by drip. Zinc is a trace element that hundreds of enzymes depend on, and it is needed for wound healing, for taste and for normal immune function. This salt is one of the ordinary forms in which it is given. It also serves as a laboratory reagent and as a moss killer.
What is it given for?
| Situation | Why zinc is supplied |
|---|---|
| Poor intake or malabsorption | The body stores little, so shortage develops within weeks |
| Feeding through a vein | Trace elements are supplied in the mixture itself |
| Acrodermatitis enteropathica | An inherited fault in absorbing zinc from food |
| Wilson disease | Zinc blocks the uptake of copper in the gut lining |
| Childhood diarrhea programs | Shortens episodes where deficiency is widespread |
Shortage shows itself in a recognizable pattern: a rash around the mouth and other body openings, hair loss, wounds that will not close, blunted taste and smell, and diarrhea. It follows bowel disease, heavy alcohol use, some bowel operations, and diets built on unleavened grain, since the phytate in it binds zinc and holds it out of reach.
Why does the form matter?
Because only a salt that dissolves releases zinc the body can absorb. Zinc oxide does not dissolve and is spread on skin as a barrier and a sunscreen, and it supplies nothing internally. The sulfate, gluconate and acetate salts all dissolve and all deliver the same ion, differing mainly in how much elemental zinc each gram carries and in how much stomach upset they provoke. Nausea is the usual limit on the amount that can be taken, and it is worse on an empty stomach.
Where does the cancer connection come from?
From research rather than from routine use. Zinc has been trialed for mucositis, the raw inflamed mouth lining that follows radiation therapy to the head and neck, and for the loss of taste that accompanies it. Results have been mixed and the practice is not established, so this remains a use under study rather than an accepted one. Prolonged high intake carries a hazard of its own, since zinc and copper compete for the same route into the body, and sustained excess produces copper deficiency with anemia and nerve damage.
Also known as
Used in a sentence
Zinc sulfate was added to the intravenous feeding regimen to correct a low level.
Good to know
Zinc is the element the body requires; zinc sulfate is simply one soluble carrier for it, and prolonged high intake blocks copper absorption, producing anemia and nerve damage from copper deficiency.