Nature's Sunshine Zinc
Brand: Nature's Sunshine · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that Nature's Sunshine Zinc, as a calcium supplement, supports bone density and muscle relaxation [NIH ODS]. However, we need to be very careful with dosing. The data provided does not specify the exact amount of calcium in this product, so you must check the label to confirm the dose per serving.
How it works
Think of calcium as the key building block for your skeleton. It works through bone mineralization to support bone density and mineral deposition. Additionally, it supports neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports for this category. High calcium intake can increase the risk of heart disease and prostate cancer. High levels in blood and urine may cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS] [FDA data]. Calcium can also reduce absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by reading the label to find the exact amount of calcium per serving. Do not exceed the RDA of 1,000–1,200 mg total from food and supplements combined. Take calcium separately from other medications by at least 2 hours to avoid absorption issues [NIH ODS]. If you have a history of kidney stones or heart disease, consult your doctor before using.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Sunshine |
|---|---|
| Serving Size | |
| Contents | 150.0 Tablet(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