Swanson Premium Brand Zinc (Citrate) 30 mg
Brand: Swanson Premium Brand · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that zinc is a well-researched mineral, but you should be aware of its specific benefits and risks. For the Swanson Premium Brand Zinc (Citrate) 30 mg product, our assessment is that it provides a standard dose of a highly absorbable form of zinc. Data not available on the specific brand or label details for this product. The zinc in this supplement supports immune function and wound healing, but you must take care with dosing, as long-term high intake can lead to copper deficiency.
How it works
Think of zinc as a critical cofactor — it helps hundreds of enzymes in your body function properly. Zinc citrate is a well-absorbed form that supports your immune system's ability to fight off infections and helps your body repair tissues [NIH ODS]. The 30 mg dose in this product is slightly above the recommended dietary allowance (RDA) of 8-11 mg for most adults, so you should consider your total intake from all sources [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports across all supplements, though data is not available for the specific number of reports for zinc citrate alone [FDA data]. Side effects from high zinc intake include nausea, vomiting, loss of appetite, stomach cramps, diarrhea, and headaches. Long-term use of high doses (above 40 mg daily) can lead to copper deficiency and reduced immune function [NIH ODS]. Do not exceed the tolerable upper intake level of 40 mg per day from all sources, including food and supplements [NIH ODS].
Our recommendation
Our recommendation is to take this supplement only if you have a confirmed zinc deficiency or a specific medical need. A 30 mg dose is appropriate for short-term use, such as during a cold, but you should not take it daily for extended periods without medical supervision. To avoid stomach upset, take it with food. Do not take this supplement with calcium or iron supplements, as they can interfere with zinc absorption [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Swanson Premium Brand |
|---|---|
| Serving Size | |
| Contents | 60.0 Capsule(s) |
| Market Status | On Market |
How to Read This Label
Supplement labels contain several key sections regulated by the FDA:
- Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
- Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
- % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
- Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
- Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.
Source: FDA Dietary Supplement Labeling Guide