Bluebonnet Calcium Citrate plus Magnesium
Brand: Bluebonnet · Form: SUPPLEMENT FORM, OTHER [E0172] On Market
Our assessment
The evidence shows that Bluebonnet Calcium Citrate plus Magnesium is a supplement to consider carefully. Calcium is a critical mineral for bone health, but the data also indicates potential risks that you need to weigh before starting. Our assessment is that this supplement may be appropriate for individuals with a confirmed calcium deficiency, but it is not a routine “insurance policy” for everyone [NIH ODS].
How it works
Calcium works as a structural component — it supports bone mineralization and density by depositing into your bone matrix [NIH ODS]. It also plays a role in neuromuscular relaxation, helping your muscles relax and your nerves send signals properly [NIH ODS]. The citrate form in this product is often better absorbed by people with low stomach acid, which is a practical benefit for some users.
Safety profile
Data not available for this specific product’s adverse events. For calcium in general, the FDA has received a total of 592,059 adverse event reports across all supplements [FDA data]. High calcium intakes might increase the risk of heart disease and prostate cancer, and 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
Our recommendation: Do not take this supplement unless you have a confirmed need based on a blood test. If you do choose to take it, take it separately from your thyroid medication and antibiotics by at least 2 hours [NIH ODS]. Start with the lowest possible dose, and be honest with your doctor about any symptoms like nausea or constipation. For most people, getting calcium from food is safer and more effective [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Bluebonnet |
|---|---|
| Serving Size | |
| Contents | 180.0 Caplet(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