NOW Magnesium Citrate
Brand: NOW · Form: CAPSULE [E0159]
Our assessment
The evidence shows that while NOW Magnesium Citrate is a popular product, the available data focuses on the ingredient calcium, not magnesium. We cannot assess this specific product’s benefits or risks based on the provided data. For calcium, the data supports its role in bone mineralization and neuromuscular relaxation [NIH ODS]. However, without specific data on magnesium citrate, our assessment is limited.
How it works
Based on the data for calcium, think of it as a structural supporter for your bones and a nervous system regulator. It helps with bone density and mineral deposition, and supports muscle relaxation and nerve signaling [NIH ODS]. For this specific magnesium citrate product, specific mechanisms are not described in the provided data.
Safety profile
The FDA received a total of 592,059 adverse event reports across all supplement products, but specific report counts for NOW Magnesium Citrate are not available. For the ingredient calcium, high intakes might increase the risk of heart disease and prostate cancer, and can cause side effects including constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, and abnormal heart rhythms [NIH ODS]. High calcium levels can also lead to poor muscle tone and poor kidney function [NIH ODS]. Calcium can reduce absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. For this magnesium product specifically, side effect data is not available.
Our recommendation
We cannot make a confident recommendation for NOW Magnesium Citrate based solely on the provided data. If you are considering a calcium supplement, be aware of the potential risks and medication interactions [NIH ODS]. For this specific magnesium product, the data is insufficient to guide a safe and effective dose. Consult your healthcare provider for personalized advice, as data for this product is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 120.0 Veg Capsule(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