1 Product identity
Ingredient risk
2 ingredients to use with caution
Dyna-Cal Extra-Strength Natural Calcium/Magnesium Complex
BrandDouglas Laboratories→Other Combinations Tablet or Pill 16 ingredients 2 caution DSLD #9831Net contents: 100 Tablet(s)
Target: Adults and Children 4 years and above
DSLD entry: 2012-06-01
2 Ingredients (16)
IngredientGroupSafety
Proprietary BlendProprietary Blend (Combination)—
Betain HClBetaine Hydrochloride—
AlfalfaAlfalfa—
Lecithinlecithin—
CelluloseCellulose—
Ingredient amounts require the full DSLD label. View full label at NIH DSLD →
⚠️ Use with caution — restricted in some markets
Vitamin D — Granulomatous diseases (sarcoidosis, TB) — unregulated extra-renal CYP27B1 can cause life-threatening hypercalcemia even at standard doses [2][21]
Magnesium — Severe deficiency (<0.50 mmol/L) causes secondary hypocalcemia and hypokalemia that will not correct until magnesium is repleted first [1].
3 Safety cross-reference
Vitamin C — Generally Safe
⚠ GI distress at high doses
⚠ Kidney stones risk >1g/day
Vitamin D — Use with Caution
⚠ Hypercalcemia at >10,000 IU/day
⚠ Vascular calcification risk
Vitamin E — Conditionally Safe
⚠ Increased bleeding risk
⚠ All-cause mortality at >400 IU/day
Calcium — Conditionally Safe
⚠ Cardiovascular risk debated >1,000 mg/day
⚠ Kidney stones
Magnesium — Use with Caution
⚠ Diarrhea (especially oxide)
⚠ Accumulates in renal impairment
Manganese — Conditionally Safe
⚠ Neurotoxicity with chronic excess
Boron — Conditionally Safe
⚠ Reproductive toxicity in animals
Chloride — Limited Evidence
⚠ Co-ingested with sodium
Soy Protein — Conditionally Safe
⚠ Isoflavones: estrogenic effects debated
⚠ Thyroid function may be affected
Silicon — Generally Safe
⚠ Very low toxicity
4 Label claims
• All Other
5 Data source
DSLD ID9831
Full labelView at NIH DSLD →
SourceOffice of Dietary Supplements, NIH
Market statusOn market
Entry date2012-06-01
6 More from Douglas Laboratories
View Douglas Laboratories Safety Scorecard → 788 products
A-Potene 10A-Potene 25A-Retic Natural Herbal FormulaA-Retic Natural Herbal FormulaA.R. FormulaA.R.M.D. Eye Support7 Cite this page
Vancouver
Pkhakadze G. Dyna-Cal Extra-Strength Natural Calcium/Magnesium Complex — product analysis [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 Oct 16]. Available from: https://supplement.ge/products/dyna-cal-extra-strength-natural-calcium-magnesium-complex-9831/
CC BY 4.0. Product data from NIH DSLD; safety analysis by SupplementIndex.
GP
Analyzed by SupplementIndex
PHIG · Editor-in-Chief: Prof. Giorgi Pkhakadze, MD, MPH, PhD
Product data sourced from the NIH Dietary Supplement Label Database (DSLD). Safety cross-referencing by SupplementIndex. This analysis is for informational purposes only. For corrections: info@accreditation.ge.
Publisher: PHIG
Publisher: PHIG