PowerCal 1000 mg
by Zahler · tablet or pill · 180 tablets
- On the market (NIH)
- UPC 7 79663 11010 3
- DSLD label 33331
- Serving 4 tablets
- 45 servings
PowerCal 1000 mg by Zahler lists 8 ingredients, 8 with an amount per serving of 4 tablets, such as 1,000 mg of calcium, 750 mg of magnesium, 10 mg of zinc and 3 mg of manganese. Its current label entered the NIH Dietary Supplement Label Database on May 23, 2014.
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 |
|---|---|---|---|
| Calciumas Calcium Carbonate, Calcium CitrateCalcium (Form: as {Calcium} Citrate, {Calcium} Carbonate) | 1,000 mg | 100% | 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 OxideMagnesium (Form: as {magnesium} oxide, & {magnesium} aspartate) | 750 mg | 188% | 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 CitrateZinc (Form: as Zinc Citrate) | 10 mg | 67% | 51% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 20 mg. |
| Manganeseas Manganese CitrateManganese (Form: as {Manganese} Citrate) | 3 mg | 150% | Higher than 71% of 7,016 products listing manganese (median 2 mg). Per day at the most servings: 6 mg. |
| Vitamin D3as Cholecalciferol | 1,000 IU (25 mcg) | 250% | Higher than 59% of 14,175 products listing vitamin D (median 15 mcg). Per day at the most servings: 50 mcg. |
| Boronas {boron} AACBoron (Form: as {boron} AAC) | 3 mg | Higher than 78% of 3,339 products listing boron (median 1 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 | 40 mg | 79% of 304 products listing oats give more (median 187.5 mg). Per day at the most servings: 80 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 33331 (entered May 23, 2014), version 9.4.0. See the label on DSLD. 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 mgAdvanced Nutrition by Zahler 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: 2 tablets 2 times daily with meals.
- Warnings
- KEEP OUT OF REACH OF CHILDREN.
- Storage
- STORE TIGHTLY IN COOL, DRY PLACE.
Source: label statements in DSLD label 33331.
What else is on the label?
Other ingredients: Stearic Acid, Magnesium Stearate, Croscarmellose Sodium, Cellulose, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): D; TRIPLE CERTIFIED FORMULA; advanced nutrition ZAHLER(R); THIS PRODUCT WAS MANUFACTURED IN A GMP CERTIFIED FACILITY; BONE & JOINT {tablet}.
How many labels does PowerCal 1000 mg have?
One label is on file, entered on May 23, 2014.
- Label 33331 (current) Entered May 23, 2014 · on the market · 180 tablets · UPC 7 79663 11010 3
DSLD also links this label to: PowerCal 1000 mg (image difference, same product), 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 Zahler products.