PlainVitamins

Dyna-Cal

by Douglas Laboratories · tablet or pill · 250 tablets

  • On the market (NIH)
  • UPC 3 10539 98060 6
  • DSLD label 286491
  • Serving 4 tablets
  • 62.5 servings

Dyna-Cal by Douglas Laboratories lists 9 ingredients, 9 with an amount per serving of 4 tablets, such as 80 mg of vitamin C, 25 mcg (1,000 IU) of vitamin D3, 13.4 mg of vitamin E and 1,500 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on June 22, 2023.

What is in Dyna-Cal?

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).

Dyna-Cal: Supplement Facts rows against the market (DSLD label 286491, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid80 mg89%Vitamin C in Dyna-Cal against 18,583 products80 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg80 mg

61% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin D3as Cholecalciferol1000 IU25 mcg (1,000 IU)125%Vitamin D in Dyna-Cal 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).

Vitamin Eas D-Alpha-Tocopheryl Succinate13.4 mg89%
Calciumas Calcium Carbonate, Calcium Citrate1,500 mg115%Calcium in Dyna-Cal against 17,831 products1,500 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg1,500 mg

Higher than over 99% of 17,831 products listing calcium (median 115 mg).

Magnesiumas Magnesium Citrate, Magnesium Oxide420 mg100%Magnesium in Dyna-Cal against 14,003 products420 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg420 mg

Higher than 95% of 14,003 products listing magnesium (median 86 mg). 1.2 times the adult UL a day.

Manganeseas Manganese Sulfate10 mg435%Manganese in Dyna-Cal against 7,016 products10 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg10 mg

Higher than 93% of 7,016 products listing manganese (median 2 mg).

Boronas Boron Citrate400 mcgBoron in Dyna-Cal against 3,339 products0.4 mg per serving; the middle half of products list 0.3 mg to 2 mg, the median 1 mg.UL 20 mg0.4 mg

73% of 3,339 products listing boron give more (median 1 mg).

Betaine Hydrochloride80 mgBetaine Hydrochloride in Dyna-Cal against 914 products80 mg per serving; the middle half of products list 25 mg to 178 mg, the median 50 mg.80 mg

Higher than 58% of 914 products listing betaine hydrochloride (median 50 mg).

Glutamic Acid HCl20 mgGlutamic Acid in Dyna-Cal against 697 products20 mg per serving; the middle half of products list 25 mg to 364 mg, the median 80 mg.20 mg

78% of 697 products listing glutamic acid give more (median 80 mg).

Source: NIH ODS Dietary Supplement Label Database, label 286491 (entered June 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 1,500 mg of calcium is higher than over 99% of the 17,831 calcium products that print an amount; 60 list more.
  • At 1 serving a day, the most its directions give, the label lists 420 mg of magnesium, 1.2 times the adult Tolerable Upper Intake Level.
  • Its 10 mg of manganese is higher than 93% of the 7,016 manganese products that print an amount; 228 list more.

The NIH database records one serving 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 Dyna-Cal'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
Suggested usage: As a dietary supplement, adults take 4 tablets daily with meals or as directed by your health professional.
Warnings
Warning: If you are pregnant, or nursing, or if you are taking prescription medication, consult your health professional before using this product.
Discontinue immediately if a burning sensation occurs. Not recommended for people with ulcers. Do not exceed the suggested daily dose unless recommended and monitored by your health professional.
If you have any health condition, particularly liver disease, or are taking any medication, consult your health professional before use.
Keep out of the reach of children.
Use only if safety seal is intact.
Allergens and what it does not contain
Gluten free, Non GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 286491.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Calcium Carbonate, Hydroxypropyl Methylcellulose, Isomalt, Medium Chain Triglycerides, Croscarmellose Sodium, Stearic Acid, Stearate, Silica.

How many labels does Dyna-Cal have?

5 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 286491 (current) Entered June 22, 2023 · on the market · 250 tablets · UPC 3 10539 98060 6
  2. Label 232615 Entered August 23, 2020 · on the market · 250 tablets · UPC 3 10539 04039 3
  3. Label 57018 Entered February 23, 2016 · off the market May 18, 2020 · 250 tablets · UPC 3 10539 04039 3
  4. Label 57016 Entered February 23, 2016 · on the market · 100 tablets · UPC 3 10539 04038 6
  5. Label 5461 Entered February 23, 2012 · off the market January 20, 2012 · 100 tablets · UPC 3 10539 01579 7

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?