Thorne Magnesium Citrate
Brand: Thorne · Form: CAPSULE [E0159]
Our assessment
Our assessment: Thorne Magnesium Citrate is a well-formulated supplement for addressing magnesium deficiency. The data confirms that magnesium is essential for over 300 biochemical reactions in the body, including muscle and nerve function, blood glucose control, and blood pressure regulation [NIH ODS]. For you, this product provides a highly absorbable form of magnesium, which is a key advantage over less soluble forms [NIH ODS].
How it works
Think of magnesium citrate as a dual-action mineral. The magnesium part works as a critical cofactor, helping enzymes perform vital tasks like energy production and protein synthesis [NIH ODS]. The citrate component is an organic salt that enhances magnesium's absorption in your digestive tract, making it more bioavailable than magnesium oxide [NIH ODS]. This combination supports muscle relaxation and can help counteract the effects of stress or a diet low in magnesium-rich foods [NIH ODS].
Safety profile
Data not available on adverse event reports for this specific product from the FDA data provided. General side effects from magnesium supplements can include diarrhea and abdominal cramping, especially at higher doses [NIH ODS]. The tolerable upper intake level from supplements alone is 350 mg per day for adults; exceeding this can lead to adverse effects [NIH ODS]. You should not take this supplement if you have kidney disease without consulting your doctor [NIH ODS].
Our recommendation
Our recommendation: Start with one capsule daily, taken with food to minimize digestive upset. Monitor your bowel habits, as magnesium citrate can have a gentle laxative effect. Do not exceed the dosage on the label unless directed by a healthcare provider. If you have a history of kidney issues or are taking medications such as diuretics or antibiotics, speak with your pharmacist or physician before starting [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Thorne |
|---|---|
| Serving Size | |
| Contents | 90.0 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