Sundown Naturals Chelated Calcium And Magnesium
Brand: Sundown Naturals · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that Sundown Naturals Chelated Calcium And Magnesium provides two essential minerals. Our assessment is that this combination can be effective for supporting bone health, but you must pay close attention to dosing and potential medication interactions. Data not available for the specific magnesium content in this product.
How it works
Think of calcium as a key building block for your skeleton. It supports bone mineralization by helping deposit minerals into bone tissue [NIH ODS]. It also plays a role in neuromuscular relaxation, meaning it helps your muscles relax and your nerves signal properly after they fire [NIH ODS]. Magnesium works alongside calcium to regulate these processes.
Safety profile
Safety is a critical concern here. The FDA has received a total of 592,059 adverse event reports for all supplements, though this number is not specific to this product alone. For calcium specifically, the data shows that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels of calcium in your blood and urine can lead to several side effects, including: 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]. You must also be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation is to take this supplement only if you have a confirmed need for additional calcium and magnesium. Start with a low dose and separate it from your medications by at least two hours to avoid absorption issues [NIH ODS]. Monitor for constipation or nausea, and talk to your doctor if you have a history of kidney stones or heart conditions. Data not available for the specific magnesium dosage in this product, so check the label carefully.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Sundown Naturals |
|---|---|
| Serving Size | |
| Contents | 100.0 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