Swanson Ultra Simag Marine Magnesium 200 mg
Brand: Swanson Ultra · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Swanson Ultra Simag Marine Magnesium 200 mg provides a specific form of magnesium, but the data provided focuses on calcium. For this product, data on magnesium is not available. Based on the calcium data provided, maintaining a proper balance between calcium and magnesium is critical for your health. The data confirms that calcium supports bone density and muscle relaxation [NIH ODS].
How it works
Think of calcium as a key structural component for your skeleton. It supports bone mineralization, which is the process of depositing minerals into bone tissue to keep them strong. Calcium also works with magnesium to regulate neuromuscular relaxation and nerve signaling, helping your muscles function smoothly [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplement categories. For calcium specifically, high intake can be risky. 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 [NIH ODS]. Some research suggests that high calcium intakes might also increase the risk of heart disease and prostate cancer [NIH ODS].
Our recommendation
We recommend you do not take calcium supplements without first assessing your total dietary intake. Calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. For this specific magnesium product, data on its own side effects or benefits is not available. Consult your healthcare provider before adding any new supplement to your routine.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Swanson Ultra |
|---|---|
| Serving Size | |
| Contents | 60.0 Veggie 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