PowerCal 1000 mg
by Advanced Nutrition by Zahler · tablet or pill · 180 tablets
- On the market (NIH)
- UPC 8 48998 08137 9
- DSLD label 301106
- Serving 2 tablets; amounts per 4 tablets
- 45 servings
PowerCal 1000 mg by Advanced Nutrition by Zahler lists 8 ingredients, 8 with an amount per serving of 4 tablets, such as 10 mcg (400 IU) of vitamin D3, 1,000 mg of calcium, 750 mg of magnesium and 10 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2023.
What is in PowerCal 1000 mg?
Each row as the label prints it, per serving of 4 tablets. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin D3as Cholecalciferol400 IU | 10 mcg (400 IU) | 50% | 57% of 14,175 products listing vitamin D give more (median 15 mcg). Per day at the most servings: 20 mcg. |
| Calciumas Calcium Carbonate, Calcium Citrate | 1,000 mg | 77% | Higher than 95% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 2,000 mg. |
| Magnesiumas Magnesium Aspartate, Magnesium Oxide | 750 mg | 179% | Higher than over 99% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 1,500 mg. 4.3 times the adult UL a day. |
| Zincas Zinc Citrate | 10 mg | 91% | 51% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 20 mg. |
| Manganeseas Manganese Citrate | 3 mg | 130% | Higher than 71% of 7,016 products listing manganese (median 2 mg). Per day at the most servings: 6 mg. |
| Strontiumas Strontium Citrate | 650 mg | Higher than 82% of 111 products listing strontium (median 9.6 mg). Per day at the most servings: 1,300 mg. | |
| Oat Straw, Powder | 40 mg | 79% of 304 products listing oats give more (median 187.5 mg). Per day at the most servings: 80 mg. | |
| Boronas Boron Amino Acid Chelate | 3 mg | Higher than 78% of 3,339 products listing boron (median 1 mg). Per day at the most servings: 6 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 301106 (entered November 22, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:
- Its 1,000 mg of calcium is higher than 95% of the 17,831 calcium products that print an amount; 314 list more.
- At 2 servings a day, the most its directions give, the label lists 1,500 mg of magnesium, 4.3 times the adult Tolerable Upper Intake Level.
The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
1 product lists the very same ingredients; the nearest amounts come first.
- PowerCal 1000 mgZahler same ingredients
- Bone StrengthBioSchwartz 7 shared, 68% alike
- PowerCal 900 mgAdvanced Nutrition by Zahler 5 shared, 67% alike
- Bone RestoreHoltraCeuticals 6 shared, 58% alike
- Clinical Osteoporosis SupportNatural Clinician 7 shared, 57% alike
- Strontium Osteo ComplexNutriCology · off the market 7 shared, 55% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Directions: Take 4 tablets daily, preferably 2 tablets twice a day with food, or as directed by a healthcare practitioner.
- Warnings
- 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.
- Allergens and what it does not contain
- Non-GMO Dairy free Soy free
- Storage
- Store tightly closed in a cool, dry place.
Source: label statements in DSLD label 301106.
What else is on the label?
Other ingredients: Stearic Acid, Microcrystalline Cellulose, Croscarmellose Sodium, Magnesium Stearate, Silicon Dioxide, Pharmaceutical Glaze.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Kosher Pareve D OU Kosher This product was manufactured in a GMP certified facility; Made in the USA.
How many labels does PowerCal 1000 mg have?
2 labels are on file under this name since February 23, 2022: other sizes, label designs and reformulations. The current one leads this page.
- Label 301106 (current) Entered November 22, 2023 · on the market · 180 tablets · UPC 8 48998 08137 9
- Label 260281 Entered February 23, 2022 · off the market October 3, 2022 · 180 tablets · UPC 8 48998 08137 9
DSLD also links this label to: PowerCal 1000 mg (image difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Advanced Nutrition by Zahler (distributor), Brooklyn, NY. All Advanced Nutrition by Zahler products.