PlainVitamins

PowerCal 900 mg

by Advanced Nutrition by Zahler · capsule · 180 capsules

  • On the market (NIH)
  • UPC 8 48998 08135 5
  • DSLD label 260277
  • Serving 2 capsules; amounts per 4 capsules
  • 45 servings

PowerCal 900 mg by Advanced Nutrition by Zahler lists 5 ingredients, 5 with an amount per serving of 4 capsules, such as 25 mcg (1,000 IU) of vitamin D3, 900 mg of calcium, 500 mg of magnesium and 40 mg of strontium. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2022.

What is in PowerCal 900 mg?

Each row as the label prints it, per serving of 4 capsules. 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).

PowerCal 900 mg: Supplement Facts rows against the market (DSLD label 260277, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin D3as Cholecalciferol1000 IU25 mcg (1,000 IU)125%Vitamin D in PowerCal 900 mg against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg). Per day at the most servings: 50 mcg.

Calciumas Calcium Carbonate, Calcium Citrate900 mg69%Calcium in PowerCal 900 mg against 17,831 products900 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg900 mg

Higher than 95% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 1,800 mg.

Magnesiumas Magnesium Aspartate, Magnesium Oxide500 mg119%Magnesium in PowerCal 900 mg against 14,003 products500 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg500 mg

Higher than 96% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 1,000 mg. 2.9 times the adult UL a day.

Strontiumas Strontium Citrate40 mgStrontium in PowerCal 900 mg against 111 products40 mg per serving; the middle half of products list 2.45 mg to 300 mg, the median 9.6 mg.40 mg

Higher than 57% of 111 products listing strontium (median 9.6 mg). Per day at the most servings: 80 mg.

Oat Straw powder10 mgOats in PowerCal 900 mg against 304 products10 mg per serving; the middle half of products list 50 mg to 500 mg, the median 187.5 mg.10 mg

94% of 304 products listing oats give more (median 187.5 mg). Per day at the most servings: 20 mg.

Source: NIH ODS Dietary Supplement Label Database, label 260277 (entered February 23, 2022), 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 900 mg of calcium is higher than 95% of the 17,831 calcium products that print an amount; 839 list more.
  • At 2 servings a day, the most its directions give, the label lists 1,000 mg of magnesium, 2.9 times the adult Tolerable Upper Intake Level.
  • 94% of the 304 products that print an amount of oats list more than its 10 mg of oat straw powder (filed by NIH under oats) (median 187.5 mg).

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?

The products whose ingredient lists overlap most with PowerCal 900 mg's, rare ingredients counting for more.

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 capsules daily, preferably 2 capsules 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 Built clean: Free of synthetic binders and fillers.
Storage
Store tightly closed in a cool, dry place.

Source: label statements in DSLD label 260277.

What else is on the label?

Other ingredients: Hypromellose, Rice hull concentrate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): D (Dairy Kosher) OU (Kosher) This product was manufactured in a GMP certified Facility; Manufactured in the USA.

How many labels does PowerCal 900 mg have?

One label is on file, entered on February 23, 2022.

  1. Label 260277 (current) Entered February 23, 2022 · on the market · 180 capsules · UPC 8 48998 08135 5

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.

Where next?