Douglas Laboratories Calcium D-Glucarate
Brand: Douglas Laboratories · Form: CAPSULE [E0159]
Our assessment
Our assessment: Calcium D-Glucarate from Douglas Laboratories is a supplement that provides calcium, a mineral essential for bone health. The evidence shows that adequate calcium intake supports bone density and mineral deposition [NIH ODS]. However, we must be clear that data for the "D-Glucarate" component itself is not provided in this data set, so our analysis focuses strictly on the calcium content. You should know that while calcium is vital, it is not a standalone solution for bone health and requires careful dosing [NIH ODS].
How it works
Think of calcium as a structural building block for your bones. It works by supporting bone mineralization and density, which is the process of depositing minerals into your skeleton to keep it strong [NIH ODS]. Additionally, calcium plays a role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS]. For you, this means consistent intake supports skeletal strength and normal muscle function.
Safety profile
The FDA has received a total of 592,059 adverse event reports for products containing this ingredient [FDA data]. Safety data from the NIH indicates that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Very high levels of calcium 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]. You should also be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation: Do not start this supplement without first consulting your healthcare provider. Given the potential for serious side effects and drug interactions, you need a personalized assessment of your calcium needs based on your diet and medical history [NIH ODS]. If you are already on any of the listed medications, you must discuss timing and dosing with your doctor to avoid absorption issues [NIH ODS]. For general bone health, prioritize dietary calcium sources first and only supplement under medical supervision.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| 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