Rugby Natural Magnesium 27 mg
Brand: Rugby · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that Rugby Natural Magnesium 27 mg provides a relatively low dose of magnesium. For most adults, the recommended daily allowance is significantly higher, so this product may be best used as part of a broader approach to meeting your nutritional needs. Data on this specific product is limited, so we rely on general information about the mineral.
How it works
Calcium, which is a mineral, supports several key functions. It is critical for bone mineralization, helping to build and maintain bone density. It also plays a role in neuromuscular relaxation, supporting proper muscle relaxation and nerve signaling [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports across all supplement products. For calcium specifically, very high intakes can lead to risks. High levels in the blood and urine may cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Some research also suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS].
Our recommendation
You should be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Because this product contains only 27 mg of magnesium per serving, it is unlikely to provide a full therapeutic dose for most magnesium needs. Consult your healthcare provider to see if this supplement fits into your overall mineral intake plan.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Rugby |
|---|---|
| Serving Size | |
| Contents | 100.0 Tablet(s) |
| Market Status | On 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