Thorne Zinc Bisglycinate 30 mg
Brand: Thorne · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that zinc is an essential mineral for immune function and cellular repair. Thorne Zinc Bisglycinate provides 30 mg per serving, which is above the Recommended Dietary Allowance of 8–11 mg for most adults [NIH ODS]. This form uses bisglycinate, which is generally considered well-absorbed. For a general audience, we recommend assessing your total zinc intake from food and other supplements before adding 30 mg.
How it works
Think of zinc as a critical cofactor for over 300 enzymes in your body. It supports immune cell development, helps heal wounds, and is necessary for DNA synthesis [NIH ODS]. The bisglycinate form in this product binds zinc to the amino acid glycine, which may reduce stomach upset compared to other forms like zinc sulfate [NIH ODS].
Safety profile
FDA received 694 adverse event reports for zinc products. Side effects include nausea and stomach discomfort [FDA data]. Chronic intake above 40 mg daily from all sources can lead to copper deficiency [NIH ODS]. Data not available for this specific product’s adverse event count.
Our recommendation
Start with one capsule daily only if you have a confirmed zinc deficiency or low dietary intake. Do not exceed the tolerable upper intake level of 40 mg per day from all sources [NIH ODS]. Consult your healthcare provider before starting, especially if you take antibiotics or diuretics [NIH DSLD].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Thorne |
|---|---|
| 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