Zinc Oxide Dosage: An Introduction
The dose of
zinc oxide that is recommended for you may vary, depending on a number of factors, including:
- The particular zinc oxide product
- Your age
- Other medications you are taking
- Other medical conditions you may have.
As is always the case, do not adjust your dosage unless your healthcare provider specifically instructs you to do so.
There is no standard zinc oxide "dosage" for skin products, per se. These products (such as
diaper rash ointments, creams, or certain sunscreens) are meant to be applied liberally as needed. Simply follow the instructions for your particular zinc oxide product.
Dosing for Oral Zinc Oxide Products
There are several different forms of zinc (such as zinc gluconate, zinc sulfate, or zinc oxide). Some
dietary supplements use zinc oxide for a source of zinc. In such products, the dose is given in terms of zinc (not zinc oxide), because the Recommended Dietary Allowances (RDAs) are provided in terms of zinc (not zinc oxide). For general supplementation purposes, the Recommended Dietary Allowances (RDAs) for zinc are as follows:
|
Age
|
RDA
|
|
0 to 6 months*
|
2 mg daily
|
|
7 months to 3 years
|
3 mg daily
|
|
4 to 8 years
|
5 mg daily
|
|
9 to 13 years
|
8 mg daily
|
|
14 years and older (males)
|
11 mg daily
|
|
14 to 18 years old (females)
|
9 mg daily
|
|
19 years and older (females)
|
8 mg daily
|
|
Pregnant women (14 to 18 years old)
|
12 mg daily
|
|
Pregnant women (19 years and older)
|
11 mg daily
|
|
Breastfeeding women (14 to 18 years old)
|
13 mg daily
|
|
Breastfeeding women (19 years and older)
|
12 mg daily
|
*RDAs are not established for zinc for infants under seven months old; instead, an "Adequate Intake" level is provided.
For nutrients that can cause toxicity, a "Tolerable Upper Intake Level" (UL) is given. This is the maximum that can be taken (from all sources, including the diet) without causing significant toxicity. Refer to the following table for UL values for zinc:
|
Age
|
UL
|
|
0 to 6 months old
|
4 mg daily
|
|
7 to 12 months old
|
5 mg daily
|
|
1 to 3 years old
|
7 mg daily
|
|
4 to 8 years old
|
12 mg daily
|
|
9 to 13 years old
|
23 mg daily
|
|
14 to 18 years old
|
34 mg daily
|
|
19 years and older
|
40 mg daily
|