PlainVitamins

Ferronyl Iron

by Douglas Laboratories · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 3 10539 01732 6
  • DSLD label 232593
  • Serving 2 tablets
  • 30 servings

Ferronyl Iron by Douglas Laboratories lists 13 ingredients, 13 with an amount per serving of 2 tablets, such as 200 mg of vitamin C, 20.1 mg of vitamin E, 6 mg of thiamine and 8 mg of riboflavin. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.

What is in Ferronyl Iron?

Each row as the label prints it, per serving of 2 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).

Ferronyl Iron: Supplement Facts rows against the market (DSLD label 232593, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid200 mg222%Vitamin C in Ferronyl Iron against 18,583 products200 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg200 mg

Higher than 63% of 18,583 products listing vitamin C (median 100 mg).

Vitamin Eas Vitamin E SuccinateVitamin E (Form: as Vitamin E Succinate)20.1 mg134%
Thiamineas Thiamine MononitrateThiamine (Form: as Thiamine Mononitrate)6 mg500%Thiamin in Ferronyl Iron against 9,830 products6 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg6 mg

Higher than 55% of 9,830 products listing thiamin (median 5 mg).

Riboflavin8 mg615%Riboflavin in Ferronyl Iron against 9,824 products8 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg8 mg

Higher than 60% of 9,824 products listing riboflavin (median 4 mg).

Niacinamideas Niacinamide AscorbateNiacinamide (Form: from Niacinamide Ascorbate)30 mg188%Niacin in Ferronyl Iron against 12,413 products30 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg30 mg

Higher than 63% of 12,413 products listing niacin (median 20 mg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine HCl)4 mg235%Vitamin B6 in Ferronyl Iron against 15,277 products4 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg4 mg

59% of 15,277 products listing vitamin B6 give more (median 6 mg).

Folateas Folic Acid167 mcg DFE42%
Folic Acid100 mcg
Vitamin B12as CyanocobalaminVitamin B12 (Form: as Cyanocobalamin)50 mcg2,083%Vitamin B12 in Ferronyl Iron against 14,425 products50 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg50 mcg

Higher than 51% of 14,425 products listing vitamin B12 (median 36 mcg).

Pantothenic Acidas D-Calcium PantothenatePantothenic Acid (Form: as D-Calcium Pantothenate)25 mg500%Pantothenic Acid (Vitamin B5) in Ferronyl Iron against 10,060 products25 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg25 mg

Higher than 61% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Cholineas Choline BitartrateCholine (Form: from Choline Bitartrate)12 mg2%Choline in Ferronyl Iron against 4,738 products12 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg12 mg

78% of 4,738 products listing choline give more (median 40 mg).

Ironas FerronylIron (Form: as Ferronyl (Alt. Name: Iron Carbonyl))54 mg300%Iron in Ferronyl Iron against 6,910 products54 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg54 mg

Higher than 98% of 6,910 products listing iron (median 5 mg). 1.2 times the adult UL a day.

Glycine200 mgGlycine in Ferronyl Iron against 1,078 products200 mg per serving; the middle half of products list 100 mg to 846 mg, the median 300 mg.200 mg

56% of 1,078 products listing glycine give more (median 300 mg).

Source: NIH ODS Dietary Supplement Label Database, label 232593 (entered August 23, 2020), 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:

  • At 1 serving a day, the most its directions give, the label lists 54 mg of iron, 1.2 times the adult Tolerable Upper Intake Level.

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?

1 product lists the very same ingredients; the nearest amounts come first.

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 2 tablets daily with food or as directed by your health professional.
Warnings
Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or Poison Control Center immediately.
Warning: If you are pregnant or nursing, or if you are taking prescription medications, consult your health professional before using this supplement.
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 232593.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Vegetable Stearate, Coating, Silica.

How many labels does Ferronyl Iron have?

2 labels are on file under this name since January 25, 2017: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 232593 (current) Entered August 23, 2020 · on the market · 60 tablets · UPC 3 10539 01732 6
  2. Label 70032 Entered January 25, 2017 · off the market May 18, 2020 · 60 tablets · UPC 3 10539 01732 6

DSLD also links this label to: Ferro-C (image difference, same product), Ferronyl with Vitamin C (image difference, same product), Ferronyl with Vitamin C (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 Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?