The Vitamin Shoppe Magnesium Glycinate 400 mg
Brand: The Vitamin Shoppe · Form: TABLET [E0155]
Our assessment
The evidence shows that magnesium is a critical mineral for over 300 biochemical reactions in your body. The data confirms that many adults do not get enough magnesium from diet alone, and supplementation can help fill that gap [NIH ODS]. For this specific product, we must note that data on the exact formulation, brand, and ingredient sourcing is not available, so our assessment is based on the general ingredient, magnesium glycinate.
How it works
Think of magnesium as a calming mineral — it helps regulate nerve function, muscle contractions, and supports a steady heart rhythm [NIH ODS]. The "glycinate" form is magnesium bound to the amino acid glycine, which is often used because it is gentle on the stomach and may promote relaxation. This form is typically well-absorbed compared to other types of magnesium [NIH ODS].
Safety profile
FDA received 3,713 adverse event reports for magnesium supplements. The most commonly reported side effects include diarrhea (1,204 reports), nausea (487 reports), and abdominal cramping (312 reports) [FDA data]. Magnesium glycinate is generally considered to have a lower risk of causing diarrhea compared to other forms like magnesium oxide [NIH ODS].
Our recommendation
Start with a lower dose, such as 200 mg, to assess your tolerance before moving to 400 mg. You should take it with food to reduce any potential stomach upset. Because magnesium can interact with certain medications, including antibiotics and diuretics, consult your doctor before starting if you take any prescription drugs [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | The Vitamin Shoppe |
|---|---|
| Serving Size | |
| Contents | 180.0 Tablet(s) |
| Market Status | Off 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