NOW Magnesium Citrate
Brand: NOW · Form: POWDER [E0162]
Our assessment
The evidence shows that NOW Magnesium Citrate is a supplement intended to provide magnesium, but the specific data provided focuses on calcium. For calcium, the data supports its role in bone health, though the evidence also highlights significant risks at high intakes. You should be aware that this product contains magnesium citrate, and the specific data for magnesium is not provided here.
How it works
Think of calcium as a key player in your body's structural and signaling systems. It supports bone mineralization, helping to deposit minerals into your skeleton for density and strength. It also plays a role in neuromuscular relaxation, aiding muscle relaxation and nerve signaling [NIH ODS].
Safety profile
Data not available for this specific product's adverse events. However, based on the calcium data provided, high intakes of calcium can lead to serious side effects, including constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. The FDA has received a total of 592059 adverse event reports across all supplements, but a specific count for this product is not available [FDA data].
Our recommendation
Because the specific data for magnesium citrate is not available, we cannot make a direct recommendation for this product. For calcium, be cautious with high-dose supplementation. If you are taking medications such as bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, or phenytoin, calcium supplements may reduce their absorption [NIH ODS]. Consult your healthcare provider before starting any new supplement, including this one.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 8.0 oz. 227.0 g |
| 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