Thorne Research Zinc Citrate
Brand: Thorne Research · Form: CAPSULE [E0159]
Our assessment
The evidence shows that zinc is an essential mineral for immune function, and Thorne Research Zinc Citrate provides a well-absorbed form. For most adults, the recommended dietary allowance (RDA) is 11 mg for men and 8 mg for women [NIH ODS]. Data on this specific product’s efficacy is not available. Because zinc citrate is a highly bioavailable form, we see this as a solid choice for maintaining adequate zinc levels, especially if your diet is low in zinc-rich foods [NIH ODS].
How it works
Think of zinc as a gatekeeper for your immune system — it helps activate T-cells, which are critical for fighting off infections, and it supports the structure of proteins and cell membranes [NIH ODS]. Zinc also plays a role in wound healing and DNA synthesis. The citrate form is gentle on the stomach and is absorbed efficiently, making it a practical option for daily use [NIH ODS].
Safety profile
Data not available for adverse event reports specific to Thorne Research Zinc Citrate from FDA data. However, general safety data shows that taking zinc long-term above the tolerable upper intake level of 40 mg per day can cause copper deficiency [NIH ODS]. Common side effects from excessive zinc intake include nausea and stomach upset [NIH ODS]. Stick to the recommended dose on the label to avoid these risks.
Our recommendation
We recommend Thorne Research Zinc Citrate as a high-quality supplement if you need to boost your zinc intake. Start with one capsule daily, and do not exceed 40 mg of total zinc from all sources per day [NIH ODS]. For best results, take it with a meal to minimize stomach discomfort. If you are unsure about your zinc status, a blood test can confirm whether supplementation is necessary.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Thorne Research |
|---|---|
| Serving Size | |
| Contents | 60.0 Vegetarian Capsule(s) |
| Market Status | Off 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