NOW Calcium & Magnesium Softgels
Brand: NOW · Form: SOFTGEL CAPSULE [E0161] On Market
Our assessment
The evidence shows that NOW Calcium & Magnesium Softgels provide two essential minerals. Calcium is critical for bone density and neuromuscular relaxation [NIH ODS]. However, you should be aware of significant safety considerations before starting this supplement.
How it works
Calcium supports bone mineralization by helping deposit minerals into your skeleton, and it also plays a role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS]. The magnesium in the softgels works alongside calcium to support these functions.
Safety profile
The FDA received a total of 592,059 adverse event reports across all supplement categories [FDA data]. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels in the blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available for a specific dosage recommendation from the provided information. If you take any medications listed above, separate your calcium dose by at least two hours to avoid absorption issues [NIH ODS]. Start with one softgel daily and monitor for constipation or nausea [NIH ODS]. Always consult your healthcare provider before starting, especially if you have kidney disease or a history of heart problems [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 240.0 Softgel(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