1 Product identity
Ingredient risk
4 ingredients to use with caution
PowerCal 1000 mg
BrandZahler→Botanical with Nutrients Tablet or Pill 13 ingredients 4 caution DSLD #33331Net contents: 180 Tablet(s)
Target: Adults and Children 4 years and above
DSLD entry: 2014-05-23
2 Ingredients (13)
IngredientGroupSafety
Oat StrawOats—
Stearic AcidStearic Acid—
CelluloseCellulose—
Ingredient amounts require the full DSLD label. View full label at NIH DSLD →
⚠️ Use with caution — restricted in some markets
Magnesium — Severe deficiency (<0.50 mmol/L) causes secondary hypocalcemia and hypokalemia that will not correct until magnesium is repleted first [1].
Zinc — Chronic zinc >40 mg/day without copper causes copper deficiency: anemia, neutropenia, myeloneuropathy [1].
Vitamin D — Granulomatous diseases (sarcoidosis, TB) — unregulated extra-renal CYP27B1 can cause life-threatening hypercalcemia even at standard doses [2][21]
Strontium — Strontium ranelate restricted to severe osteoporosis only. Cardiovascular contraindications.
3 Safety cross-reference
Calcium — Conditionally Safe
⚠ Cardiovascular risk debated >1,000 mg/day
⚠ Kidney stones
Magnesium — Use with Caution
⚠ Diarrhea (especially oxide)
⚠ Accumulates in renal impairment
Zinc — Use with Caution
⚠ Copper deficiency at >40 mg/day
⚠ Nausea, metallic taste
Manganese — Conditionally Safe
⚠ Neurotoxicity with chronic excess
Vitamin D — Use with Caution
⚠ Hypercalcemia at >10,000 IU/day
⚠ Vascular calcification risk
Boron — Conditionally Safe
⚠ Reproductive toxicity in animals
Strontium — Use with Caution
⚠ Competes with calcium absorption
⚠ Strontium ranelate: cardiovascular risk (Rx form)
Sodium — Limited Evidence
⚠ Hypertension
⚠ Fluid retention
Silicon — Generally Safe
⚠ Very low toxicity
4 Label claims
• All Other
• Structure/Function
5 Data source
DSLD ID33331
Full labelView at NIH DSLD →
SourceOffice of Dietary Supplements, NIH
Market statusOn market
Entry date2014-05-23
6 More from Zahler
View Zahler Safety Scorecard → 31 products
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Vancouver
Pkhakadze G. PowerCal 1000 mg — product analysis [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 Oct 17]. Available from: https://supplement.ge/products/powercal-1000-mg-33331/
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