PowerCal 1000 mg

product on market Tablet or Pill Advanced Nutrition by Zahler 🟢 Safety: 100/100
Brand: Advanced Nutrition by Zahler
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 38% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Tablet(s) Serving Size
45 Servings
Botanical with Nutrients Product Type
38% Evidence Coverage

Supplement Facts — Evidence Check

10 mcg (50% DV)
✅ Within RDA (0.7× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.01mg UL 0.1mg
Calcium
1000 mg (77% DV)
750 mg (179% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 750mg
10 mg (91% DV)
✅ Within RDA (0.9× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 10mg UL 40mg
3 mg (130% DV)
✅ 1.3× RDA — within safe limits 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 3mg UL 11mg
Strontium
650 mg
Oat Straw, Powder
40 mg
3 mg
📊 Market median: 3.0mg (58 products) 📚 2 studies — no high-quality reviews
This product: 3mg UL 20mg

Other Ingredients

Stearic Acid Microcrystalline Cellulose Croscarmellose Sodium Magnesium Stearate Silicon Dioxide Pharmaceutical Glaze

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (70% of products) Approved Health (4% of products)

Target Groups

Adult (18 - 50 Years) Kosher Dairy Free

Product Information

📋 Directions for Use

Directions: Take 4 tablets daily, preferably 2 tablets twice a day with food, or as directed by a healthcare practitioner.

⚠️ Warnings & Precautions

Keep out of reach of children

Do not use if safety seal is damaged or missing.

If pregnant, nursing or on medication, consult with your healthcare practitioner.

🧪 Formulation Notes

Supports healthy bones, teeth and gums

Calcium is important for building and maintaining optimal bone health. Zahler PowerCal formula includes a blend of nutrients that support calcium absorption in the body.

Kosher Pareve D OU Kosher Under the strict supervision of Rabbi SH. Stern & The Orthodox Union

Non-GMO Dairy free Soy free

PowerCal 1000 mg per serving Comprehensive calcium formula

Supports healthy bones, teeth, and gums Bone & joint

Additional Information

You may need additional supplements to support a healthy diet; consult your nutritionist for a formula that is right for you or contact us at 877-ASK-ZAHLER (877-275-9245) or ask@zahlers.com.

Kosher Pareve D OU Kosher This product was manufactured in a GMP certified facility

Store tightly closed in a cool, dry place.

Made in the USA

Product Details

UPC / SKU 8 48998 08137 9
DSLD Entry Date 2023-11-22
Product Type Botanical with Nutrients
Form Tablet or Pill
Brand Advanced Nutrition by Zahler
DSLD ID 301106
Data Updated 2026-04-11

Research Evidence

872 Research Sources
53 Avg Quality Score
309 Meta Analysis
309 Clinical Trial
111 Rct
71 Systematic Review
55 Guideline
4 Cochrane Review
4 Regulatory Source
2 Other
2 Narrative Review
2 Observational
1 Openfda Safety
A Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis
Meta Analysis The Cochrane database of systematic reviews 2009
PubMed DOI Cochrane
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Vitamin D supplementation for prevention of cancer in adults
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI Cochrane
A Interventions for preventing falls in older people in care facilities and hospitals
Meta Analysis The Cochrane database of systematic reviews 2018
PubMed DOI
A Drugs for preventing lung cancer in healthy people
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2011
PubMed DOI Cochrane
A High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis
Meta Analysis Critical reviews in food science and nutrition 2023
PubMed DOI
A The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2023
PubMed DOI
A Interventions for preventing falls in older people living in the community
Meta Analysis The Cochrane database of systematic reviews 2009
PubMed DOI
View all evidence for Vitamin D →

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