NOW Magnesium & Calcium
Brand: NOW · Form: TABLET [E0155]
Our assessment
The evidence shows that this combination product provides two essential minerals, but the specific ratio and dosage from the label are not provided here. Calcium is well-established for its role in bone health, but you need to be careful about total daily intake from all sources [NIH ODS].
How it works
Think of calcium as the building block for your skeleton. It supports bone density and mineral deposition, and it also plays a key role in neuromuscular relaxation and nerve signaling [NIH ODS]. Magnesium works alongside calcium to support muscle function and energy production.
Safety profile
Data not available for this specific product. However, for calcium generally, high intakes might increase the risk of heart disease and prostate cancer. High levels in the blood and urine can cause poor muscle tone, poor kidney function, 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 592,059 total adverse event reports for all supplement categories, but specific reports for this product are not provided [FDA data].
Our recommendation
Start by checking your current dietary calcium intake before adding this supplement. Calcium can reduce absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine, so take it at a different time than those drugs [NIH ODS]. Because the label details are missing, we cannot confirm the dosage per serving — consult your healthcare provider to determine if this product is right for you.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 100.0 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