Iron Free Just Once

by Rainbow Light · tablet or pill · 120 tablets

  • Off the market since March 2023 (NIH)
  • UPC 0 21888 10704 9
  • DSLD label 43124
  • Serving 1 tablet
  • 120 servings

Iron Free Just Once by Rainbow Light lists 46 ingredients, 32 with an amount per serving of 1 tablet, such as 5,000 IU of vitamin A, 240 mg of vitamin C, 400 IU (10 mcg) of vitamin D and 30 IU of vitamin E; 14 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2015.

What is in Iron Free Just Once?

Each row as the label prints it, per serving of 1 tablet. 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).

Iron Free Just Once: Supplement Facts rows against the market (DSLD label 43124, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-CaroteneVitamin A (Form: as Beta-Carotene)5,000 IU100%Vitamin A in Iron Free Just Once against 5,772 products5,000 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.5,000 IU

Higher than 55% of 5,772 products listing vitamin A (median 4,000 IU).

Vitamin Cas Ascorbic Acid, Magnesium Ascorbate240 mg400%Vitamin C in Iron Free Just Once against 18,583 products240 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg240 mg

Higher than 68% of 18,583 products listing vitamin C (median 100 mg).

Vitamin Das Ergocalciferol, Vitamin D2Vitamin D (Form: as D2 (Alt. Name: Ergocalciferol))400 IU (10 mcg)100%Vitamin D in Iron Free Just Once against 14,175 products10 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg10 mcg

57% of 14,175 products listing vitamin D give more (median 15 mcg).

Vitamin Eas D-Alpha-TocopherylVitamin E (Form: as D-Alpha Tocopheryl)30 IU100%Vitamin E in Iron Free Just Once against 6,459 products30 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.30 IU

44% of 6,459 products listing vitamin E give more (median 30 IU).

Vitamin B1as Thiamine MononitrateVitamin B-1 (Form: as Thiamin Mononitrate)6 mg400%Thiamin in Iron Free Just Once 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).

Riboflavinas Vitamin B26 mg353%Riboflavin in Iron Free Just Once against 9,824 products6 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg6 mg

Higher than 57% of 9,824 products listing riboflavin (median 4 mg).

Niacinas NiacinamideNiacin (Form: as Niacinamide)30 mg150%Niacin in Iron Free Just Once 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 Pyridoxine6 mg300%Vitamin B6 in Iron Free Just Once against 15,277 products6 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg6 mg

49% of 15,277 products listing vitamin B6 give more (median 6 mg).

Folic Acid400 mcg100%Folate in Iron Free Just Once against 7,022 products400 mcg per serving; the middle half of products list 200 mcg to 400 mcg, the median 400 mcg.400 mcg

24% of 7,022 products listing folate give more (median 400 mcg).

Vitamin B12as CyanocobalaminVitamin B-12 (Form: as Cyanocobalamin)25 mcg417%Vitamin B12 in Iron Free Just Once against 14,425 products25 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg25 mcg

54% of 14,425 products listing vitamin B12 give more (median 36 mcg).

Biotin300 mcg100%Biotin in Iron Free Just Once against 9,447 products300 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg300 mcg

Higher than 53% of 9,447 products listing biotin (median 200 mcg).

Vitamin B5as Calcium PantothenateVitamin B-5 (Form: as Calcium Pantothenate)30 mg300%Pantothenic Acid (Vitamin B5) in Iron Free Just Once against 10,060 products30 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg30 mg

Higher than 66% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Calciumas Calcium Amino Acid ChelateCalcium (Form: as Calcium Amino Acid Chelate)30 mg3%Calcium in Iron Free Just Once against 17,831 products30 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg30 mg

84% of 17,831 products listing calcium give more (median 115 mg).

Magnesiumas Magnesium Ascorbate, Magnesium GlycinateMagnesium (Form: as {Magnesium} Glycinate, {Magnesium} Ascorbate)30 mg8%Magnesium in Iron Free Just Once against 14,003 products30 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg30 mg

75% of 14,003 products listing magnesium give more (median 86 mg).

Zincas Zinc MonomethionineZinc (Form: as {Zinc} Citrate, {Zinc} Monomethionine)5 mg33%Zinc in Iron Free Just Once against 13,186 products5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg5 mg

72% of 13,186 products listing zinc give more (median 11 mg).

Seleniumas SelenomethionineSelenium (Form: as Selenomethionine)25 mcg36%Selenium in Iron Free Just Once against 7,658 products25 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg25 mcg

75% of 7,658 products listing selenium give more (median 55 mcg).

Manganeseas {Manganese} GlycinateManganese (Form: as {Manganese} Glycinate)2.5 mg125%Manganese in Iron Free Just Once against 7,016 products2.5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg2.5 mg

Higher than 68% of 7,016 products listing manganese (median 2 mg).

Chromiumas Chromium AAC NicotinateChromium (Form: as Chromium AAC Nicotinate)50 mcg42%Chromium in Iron Free Just Once against 7,825 products50 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg50 mcg

67% of 7,825 products listing chromium give more (median 100 mcg).

Molybdenumas Molybdenum AspartateMolybdenum (Form: as {Molybdenum} Aspartate)12 mcg16%Molybdenum in Iron Free Just Once against 4,390 products12 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg12 mcg

90% of 4,390 products listing molybdenum give more (median 50 mcg).

Potassiumas Potassium CitratePotassium (Form: as Potassium Citrate)20 mg1%Potassium in Iron Free Just Once against 11,614 products20 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg20 mg

89% of 11,614 products listing potassium give more (median 99 mg).

Boronas Boron Aspartate, Boron Citrate, Boron GlycinateBoron (Form: as {Boron} Citrate, {Boron} Aspartate, {Boron} Glycinate)50 mcgBoron in Iron Free Just Once against 3,339 products0.05 mg per serving; the middle half of products list 0.3 mg to 2 mg, the median 1 mg.UL 20 mg0.05 mg

96% of 3,339 products listing boron give more (median 1 mg).

Lemon Bioflavonoid Complex60 mgFlavonoid in Iron Free Just Once against 2,343 products60 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.60 mg

Higher than 55% of 2,343 products listing flavonoid (median 50 mg).

Cholineas Choline BitartrateCholine (Form: as Choline Bitartrate)15 mg3%*Choline in Iron Free Just Once against 4,738 products15 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg15 mg

76% of 4,738 products listing choline give more (median 40 mg).

Inositol15 mgInositol in Iron Free Just Once against 4,042 products15 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.15 mg

69% of 4,042 products listing inositol give more (median 30 mg).

Rutin15 mgRutin in Iron Free Just Once against 1,232 products15 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.15 mg

67% of 1,232 products listing rutin give more (median 25 mg).

Hesperidin10 mgHesperidin in Iron Free Just Once against 552 products10 mg per serving; the middle half of products list 10 mg to 50 mg, the median 20 mg.10 mg

64% of 552 products listing hesperidin give more (median 20 mg).

Food Enzyme Complex37 mg
Protease1,188 HUT
Amylase93 DU
Lipase1 FIP
Cellulase1 CU
Bromelain12,000 PU
Apple Pectin20 mgPectin in Iron Free Just Once against 526 products20 mg per serving; the middle half of products list 20 mg to 250 mg, the median 86 mg.20 mg

73% of 526 products listing pectin give more (median 86 mg).

Superfood & Herbal Energy ComplexSuperfood & Herbal Energy Complex Note: equivalent to 360 mg of food and herbal powder180 mg
organic Spirulinano amount given
Chlorellano amount given
4:1 Vegetable & Herb extractsno amount given
American Ginsengno amount given
Celeryno amount given
Horsetailno amount given
Carrotsno amount given
Kelpno amount given
Astragalusno amount given
Spinachno amount given
Parsleyno amount given
Stinging Nettleno amount given
Beetsno amount given
Broccolino amount given
Jujubeno amount given

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 43124 (entered March 25, 2015), 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:

  • 90% of the 4,390 products that print an amount of molybdenum list more than its 12 mcg of molybdenum (median 50 mcg).
  • 89% of the 11,614 products that print an amount of potassium list more than its 20 mg of potassium (median 99 mg).
  • 96% of the 3,339 products that print an amount of boron list more than its 0.05 mg of boron (median 1 mg).

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 Iron Free Just Once'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: Take 1 tablet per day, with or between meals. May be taken on an empty stomach.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Consult your health care professional prior to use if you are pregnant, nursing, taking medication or have a medical condition.
Allergens and what it does not contain
Contains NO: gluten ~ wheat ~ milk ~ lactose ~ tree nuts ~ peanuts ~ soy ~ eggs ~ fish ~ shellfish.
Iron-free and compatible with common prescription medications.
NO iron
Gluten-Free / Soy-Free

Source: label statements in DSLD label 43124.

What else is on the label?

Other ingredients: Cellulose, Modified Cellulose, Stearic Acid, Silica, Coating.

How many labels does Iron Free Just Once have?

2 labels are on file under this name since March 25, 2015: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 43124 (current) Entered March 25, 2015 · off the market March 28, 2023 · 120 tablets · UPC 0 21888 10704 9
  2. Label 43120 Entered March 25, 2015 · off the market March 28, 2023 · 60 tablets · UPC 0 21888 10702 5

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

Who makes it?

The label names Rainbow Light Nutritional Systems (manufacturer, distributor), Santa Cruz, CA. All Rainbow Light products.

Where next?