Quest Zinc Citrate 50 mg
Brand: Quest · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that this product provides 50 mg of zinc citrate, but the data provided does not include specific research on zinc citrate at this dosage for general health outcomes. Data for the ingredient calcium indicates it supports bone mineralization and nerve signaling [NIH ODS]. However, for zinc-related benefits, data is not available from the provided sources.
How it works
Based on the data for calcium, this mineral acts as a master regulator for bone density and supports muscle relaxation and nerve signaling through neuromuscular relaxation [NIH ODS]. No mechanism of action data was provided for zinc citrate specifically.
Safety profile
FDA received a total of 592,059 adverse event reports for all products in the database [FDA data]. For the ingredient calcium, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High calcium levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS].
Our recommendation
Start by consulting your healthcare provider before taking this supplement. The data shows calcium can reduce absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Do not exceed the dosage on the label without medical supervision. Data on specific benefits or risks for zinc citrate 50 mg is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Quest |
|---|---|
| Serving Size | |
| Contents | 90.0 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