Nature's Sunshine Magnesium
Brand: Nature's Sunshine · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that the primary active ingredient in this supplement, calcium, plays a well-defined role in bone health and nerve function [NIH ODS]. However, you should be aware that the data on high calcium intake also points to potential risks, including a possible increase in the risk of heart disease and prostate cancer [NIH ODS]. Our assessment is that this supplement is appropriate only if you have a confirmed need for additional calcium beyond your diet.
How it works
Think of calcium as a critical building block for your body. It supports bone mineralization, helping to maintain bone density, and is essential for neuromuscular relaxation, which allows your muscles to relax and your nerves to signal properly [NIH ODS].
Safety profile
FDA has received a total of 592,059 adverse event reports for products containing this ingredient. Safety data indicates that high levels of calcium in the blood and urine 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 [FDA data] [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Do not take this supplement without first consulting your doctor. Given the potential for serious side effects and drug interactions, you should have your calcium levels tested and your dietary intake assessed. If you take any prescription medications, especially for thyroid, bone, or infection issues, discuss this supplement with your pharmacist or physician first [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Sunshine |
|---|---|
| Serving Size | |
| Contents | 180.0 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