PlainVitamins

High Potency D3 & K2 Complex

by Irwin Naturals · softgel capsule · 60 liquid softgels

  • Off the market since April 2022 (NIH)
  • UPC 7 10363 59201 1
  • DSLD label 256539
  • Serving 2 liquid soft-gels
  • 30 servings

High Potency D3 & K2 Complex by Irwin Naturals lists 10 ingredients, 8 with an amount per serving of 2 liquid soft-gels, such as 100 mcg (4,000 IU) of vitamin D3, 120 mcg of vitamin K2, 100 mg of magnesium and 15 mg of zinc; 2 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on November 19, 2021.

What is in High Potency D3 & K2 Complex?

Each row as the label prints it, per serving of 2 liquid soft-gels. 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).

High Potency D3 & K2 Complex: Supplement Facts rows against the market (DSLD label 256539, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin D3as CholecalciferolVitamin D3 (Alt. Name: Cholecalciferol) Note: 4,000 IU100 mcg (4,000 IU)500%Vitamin D in High Potency D3 & K2 Complex against 14,175 products100 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg100 mcg

Higher than 92% of 14,175 products listing vitamin D (median 15 mcg).

Vitamin K2as Menaquinone-7120 mcg100%Vitamin K in High Potency D3 & K2 Complex against 4,607 products120 mcg per serving; the middle half of products list 35 mcg to 100 mcg, the median 80 mcg.DV 120 mcg120 mcg

Higher than 79% of 4,607 products listing vitamin K (median 80 mcg).

Magnesiumas Magnesium Citrate100 mg24%Magnesium in High Potency D3 & K2 Complex against 14,003 products100 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg100 mg

Higher than 51% of 14,003 products listing magnesium (median 86 mg).

Zincas Zinc CitrateZinc (Form: as Zinc Citrate)15 mg136%Zinc in High Potency D3 & K2 Complex against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg).

Flaxseed Oil1,100 mgFlaxseed Oil in High Potency D3 & K2 Complex against 512 products1.1 g per serving; the middle half of products list 0.4 g to 1.15 g, the median 1 g.1.1 g

Higher than 74% of 512 products listing flaxseed oil (median 1 g).

Eleuthero extract100 mgEleuthero in High Potency D3 & K2 Complex against 726 products100 mg per serving; the middle half of products list 50 mg to 200 mg, the median 100 mg.100 mg

37% of 726 products listing eleuthero give more (median 100 mg).

Bamboo extractas Silica28.6 mgBamboo in High Potency D3 & K2 Complex against 134 products28.6 mg per serving; the middle half of products list 25.75 mg to 600 mg, the median 92.5 mg.28.6 mg

72% of 134 products listing bamboo give more (median 92.5 mg).

Turmeric extractas Curcuminoids25 mgTurmeric in High Potency D3 & K2 Complex against 2,369 products25 mg per serving; the middle half of products list 50 mg to 500 mg, the median 150 mg.25 mg

86% of 2,369 products listing turmeric give more (median 150 mg).

BioPerine Complex6 mg
Bioperine Black Pepper extractas Piperinein the blend, no amount given
Ginger extractas Gingerolsin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 256539 (entered November 19, 2021), 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 100 mcg (4,000 IU) of vitamin D is higher than 92% of the 14,175 vitamin D products that print an amount; 1,084 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 High Potency D3 & K2 Complex'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: (Adult) Take two (2) Liquid Soft-Gels daily with a meal and a full glass (8 oz) of water.
Warnings
Usage Warnings: Do not use if safety seal is broken.
Check with your doctor before using this product if you are using medication or have any medical conditions.
Do not use if you have a bile duct obstruction.
Do not use if you may become pregnant, are pregnant or nursing.
Do not exceed recommended daily intake.
Not intended for use by persons under 18. Keep out of reach of children.
Warning: (State of California Prop 65) This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.
Contains: Soy, tree nuts (coconut, palm kernel)
Notice: Vitamin K should not be used by individuals with liver disease, kidney disease and/or blood disorders. Those individuals currently taking anticoagulant medications such as Coumadin (Warfarin) should consult with their doctor before taking supplemental Vitamin K.
Allergens and what it does not contain
No preservatives added.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 256539.

What else is on the label?

Other ingredients: Gelatin, purified Water, Glycerin, Medium Chain Triglyceride Oil, Beeswax, St. John's Bread, Soy Lecithin, Maltodextrin, Titanium Dioxide, Carboxymethyl Cellulose.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Pass Quality Tested Guaranteed.

How many labels does High Potency D3 & K2 Complex have?

One label is on file, entered on November 19, 2021.

  1. Label 256539 (current) Entered November 19, 2021 · off the market April 22, 2022 · 60 liquid softgels · UPC 7 10363 59201 1

DSLD also links this label to: Mega D3 & K2 + Turmeric Extract (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 Irwin Naturals (manufacturer, distributor), Los Angeles, CA. All Irwin Naturals products.

Where next?