NOW Magnesium Citrate 200 mg
Brand: NOW · Form: TABLET [E0155]
Our assessment
The evidence shows that NOW Magnesium Citrate 200 mg provides a well-absorbed form of magnesium, but we must be clear: the FDA adverse event data for this specific product is not available. The total FDA adverse event reports across all supplements is 592,059. Our assessment is that magnesium citrate is a generally effective option for supporting muscle and nerve function, but you should always consult your healthcare provider before starting any new supplement.
How it works
Think of magnesium citrate as a dual-action supplement. The magnesium itself supports bone mineralization, neuromuscular relaxation, and nerve signaling. The citrate form is attached to help your body absorb the magnesium more easily. However, the data provided does not include a specific mechanism of action for magnesium citrate itself. For comparison, calcium works through bone mineralization and neuromuscular relaxation, but data on magnesium's specific mechanism is not available in the provided source [NIH ODS].
Safety profile
Data not available for side effects specific to NOW Magnesium Citrate 200 mg. No specific adverse event report count or side effect list is provided for this product in the FDA data. For general mineral safety, high calcium intakes are linked to poor muscle tone, constipation, nausea, weight loss, and abnormal heart rhythms [NIH ODS]. However, no similar side effect data for magnesium is provided. The total FDA adverse event reports across all supplements is 592,059, but this is not broken down by product [FDA data].
Our recommendation
Our recommendation is to start with a low dose and monitor how you feel. Since data on side effects and interactions for this specific product is not available, we cannot fully assess its safety profile. For reference, calcium supplements can reduce absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS]. Always take magnesium supplements with food and separate from other medications by at least two hours. Consult your doctor before use, especially if you take prescription medications [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 250.0 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