PlainVitamins

Extend Core

by Vitamin Research Products · capsule · 120 capsules

  • On the market (NIH)
  • UPC 8 92727 00042 1
  • DSLD label 33995
  • Serving 2 capsules
  • 60 servings

Extend Core by Vitamin Research Products lists 34 ingredients, 34 with an amount per serving of 2 capsules, such as 4,000 IU of vitamin A, 200 mg of vitamin C, 500 IU (12.5 mcg) of vitamin D and 100 IU of vitamin E. Its current label entered the NIH Dietary Supplement Label Database on June 25, 2014.

What is in Extend Core?

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

Extend Core: Supplement Facts rows against the market (DSLD label 33995, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-Carotene, Retinyl PalmitateVitamin A (Form: as natural beta carotene, retinyl palmitate)4,000 IU80%Vitamin A in Extend Core against 5,772 products4,000 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.4,000 IU

47% of 5,772 products listing vitamin A give more (median 4,000 IU). Per day at the most servings: 8,000 IU.

Vitamin Cas Ascorbic Acid, Ascorbyl Palmitate200 mg333%Vitamin C in Extend Core 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). Per day at the most servings: 400 mg.

Vitamin Das Cholecalciferol, Vitamin D3Vitamin D (Form: as Cholecalciferol (Alt. Name: D3))500 IU (12.5 mcg)125%Vitamin D in Extend Core against 14,175 products12.5 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg12.5 mcg

53% of 14,175 products listing vitamin D give more (median 15 mcg). Per day at the most servings: 25 mcg.

Vitamin Eas D-Alpha-Tocopheryl Succinate, Mixed TocopherolsVitamin E (Form: as D-Alpha Tocopheryl Succinate, mixed Tocopherols)100 IU333%Vitamin E in Extend Core against 6,459 products100 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.100 IU

Higher than 71% of 6,459 products listing vitamin E (median 30 IU). Per day at the most servings: 200 IU.

Vitamin Kas MK-4, PhytonadioneVitamin K (Form: as Phytonadione (Alt. Name: K1), MK-4 (Form: K2))75 mcg94%Vitamin K in Extend Core against 4,607 products75 mcg per serving; the middle half of products list 35 mcg to 100 mcg, the median 80 mcg.DV 120 mcg75 mcg

52% of 4,607 products listing vitamin K give more (median 80 mcg). Per day at the most servings: 150 mcg.

Thiamineas Thiamine Hydrochloride, Vitamin B1Thiamin (Form: as Thiamine HCl) (Alt. Name: Vitamin B1)7.5 mg500%Thiamin in Extend Core against 9,830 products7.5 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg7.5 mg

Higher than 57% of 9,830 products listing thiamin (median 5 mg). Per day at the most servings: 15 mg.

Riboflavinas Vitamin B27.5 mg441%Riboflavin in Extend Core against 9,824 products7.5 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg7.5 mg

Higher than 59% of 9,824 products listing riboflavin (median 4 mg). Per day at the most servings: 15 mg.

Niacinas Inositol HexaniacinateNiacin (Form: from Inositol Hexaniacinate)62.5 mg313%Niacin in Extend Core against 12,413 products62.5 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg62.5 mg

Higher than 85% of 12,413 products listing niacin (median 20 mg). Per day at the most servings: 125 mg. 3.6 times the adult UL a day.

Vitamin B6as Pyridoxal 5-Phosphate, Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine HCl, Pyridoxal-5-Phosphate)12.5 mg625%Vitamin B6 in Extend Core against 15,277 products12.5 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg12.5 mg

Higher than 67% of 15,277 products listing vitamin B6 (median 6 mg). Per day at the most servings: 25 mg.

Folic Acidas 5-MethyltetrahydrofolateFolic Acid (Form: as 5-methyltetrahydrofolate)200 mcg50%Folate in Extend Core against 7,022 products200 mcg per serving; the middle half of products list 200 mcg to 400 mcg, the median 400 mcg.200 mcg

71% of 7,022 products listing folate give more (median 400 mcg). Per day at the most servings: 400 mcg.

Vitamin B12as MethylcobalaminVitamin B12 (Form: as Methylcobalamin)75 mcg1,250%Vitamin B12 in Extend Core against 14,425 products75 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg75 mcg

Higher than 60% of 14,425 products listing vitamin B12 (median 36 mcg). Per day at the most servings: 150 mcg.

Biotin300 mcg100%Biotin in Extend Core 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). Per day at the most servings: 600 mcg.

Pantothenic Acidas Calcium PantothenatePantothenic Acid (Form: as Calcium Pantothenate)50 mg500%Pantothenic Acid (Vitamin B5) in Extend Core against 10,060 products50 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg50 mg

Higher than 72% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg). Per day at the most servings: 100 mg.

Calciumas Calcium Citrate, Calcium MalateCalcium (Form: as Calcium Citrate, Calcium Malate)75 mg8%Calcium in Extend Core against 17,831 products75 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg75 mg

64% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 150 mg.

Iodineas Potassium IodideIodine (Form: as Potassium Iodide)75 mcg50%Iodine in Extend Core against 6,382 products75 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg75 mcg

68% of 6,382 products listing iodine give more (median 150 mcg). Per day at the most servings: 150 mcg.

Magnesiumas Magnesium Aspartate, Magnesium CitrateMagnesium (Form: as magnesium aspartate, magnesium citrate)75 mg19%Magnesium in Extend Core against 14,003 products75 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg75 mg

52% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 150 mg.

Zincas Zinc Amino Acid ChelateZinc (Form: as Zinc Amino Acid Chelate)7.5 mg50%Zinc in Extend Core against 13,186 products7.5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg7.5 mg

63% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 15 mg.

Seleniumas MethylselenocysteineSelenium (Form: as Methylselenocysteine)35 mcg50%Selenium in Extend Core against 7,658 products35 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg35 mcg

68% of 7,658 products listing selenium give more (median 55 mcg). Per day at the most servings: 70 mcg.

Copperas Copper Amino Acid ChelateCopper (Form: as Copper Amino Acid Chelate)0.5 mg25%Copper in Extend Core against 6,468 products0.5 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.5 mg

68% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 1 mg.

Manganeseas Manganese Amino Acid ChelateManganese (Form: as Manganese Amino Acid Chelate)1.25 mg63%Manganese in Extend Core against 7,016 products1.25 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg1.25 mg

68% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 2.5 mg.

Chromiumas Chromium PicolinateChromium (Form: as Chromium Picolinate (Alt. Name: Chromax))60 mcg50%Chromium in Extend Core against 7,825 products60 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg60 mcg

61% of 7,825 products listing chromium give more (median 100 mcg). Per day at the most servings: 120 mcg.

Molybdenumas Molybdenum Amino Acid ChelateMolybdenum (Form: as Molybdenum Amino Acid Chelate)50 mcg67%Molybdenum in Extend Core against 4,390 products50 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg50 mcg

41% of 4,390 products listing molybdenum give more (median 50 mcg). Per day at the most servings: 100 mcg.

Choline Bitartrate132 mg24%*Choline in Extend Core against 4,738 products132 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg132 mg

Higher than 82% of 4,738 products listing choline (median 40 mg). Per day at the most servings: 264 mg.

N-Acetyl Cysteine50 mgN-Acetyl Cysteine in Extend Core against 1,259 products50 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.50 mg

75% of 1,259 products listing N-acetyl cysteine give more (median 150 mg). Per day at the most servings: 100 mg.

Inositol hexanicotinate84 mgInositol nicotinate in Extend Core against 84 products84 mg per serving; the middle half of products list 75 mg to 850 mg, the median 285 mg.84 mg

73% of 84 products listing inositol nicotinate give more (median 285 mg). Per day at the most servings: 168 mg.

Inositol38 mgInositol in Extend Core against 4,042 products38 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.38 mg

Higher than 54% of 4,042 products listing inositol (median 30 mg). Per day at the most servings: 76 mg.

Boron Citrate32 mg

The label names the compound (Boron Citrate); its amount is likely the compound's weight, not the boron it holds, so it is not placed among other products.

full-spectrum vegetarian enzyme blend30 mg
green tea leaf EGCG25 mgEGCG in Extend Core against 291 products25 mg per serving; the middle half of products list 50 mg to 150 mg, the median 100 mg.25 mg

85% of 291 products listing EGCG give more (median 100 mg). Per day at the most servings: 50 mg.

Rutin15 mgRutin in Extend Core 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). Per day at the most servings: 30 mg.

silicaas bamboo aerial portion extractsilica (Form: from bamboo aerial portion extract)10.5 mgSilicon in Extend Core against 1,220 products10.5 mg per serving; the middle half of products list 2 mg to 10.5 mg, the median 4 mg.10.5 mg

Higher than 75% of 1,220 products listing silicon (median 4 mg). Per day at the most servings: 21 mg.

Gamma oryzanol5 mgGamma oryzanol in Extend Core against 85 products5 mg per serving; the middle half of products list 20 mg to 125 mg, the median 60 mg.5 mg

88% of 85 products listing gamma oryzanol give more (median 60 mg). Per day at the most servings: 10 mg.

Lutein1.5 mgLutein in Extend Core against 2,493 products1.5 mg per serving; the middle half of products list 0.5 mg to 10 mg, the median 3 mg.1.5 mg

59% of 2,493 products listing lutein give more (median 3 mg). Per day at the most servings: 3 mg.

Lycopene500 mcgLycopene in Extend Core against 1,691 products0.5 mg per serving; the middle half of products list 0.5 mg to 5 mg, the median 1.2 mg.0.5 mg

75% of 1,691 products listing lycopene give more (median 1.2 mg). Per day at the most servings: 1 mg.

Vanadyl Sulfate62 mcg

The label names the compound (Vanadyl Sulfate); its amount is likely the compound's weight, not the vanadium it holds, so it is not placed among other products.

* % 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 33995 (entered June 25, 2014), 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 2 servings a day, the most its directions give, the label lists 125 mg of niacin, 3.6 times the adult Tolerable Upper Intake Level.
  • 88% of the 85 products that print an amount of gamma oryzanol list more than its 5 mg of gamma oryzanol (median 60 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 Extend Core'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 2 capsules two times per day with meals.
Warnings
Keep out of reach of children.
Storage
Keep container tightly closed in a cool, dry and dark place.

Source: label statements in DSLD label 33995.

What else is on the label?

Other ingredients: Hydroxypropylmethylcellulose.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): VRP; Chromax(R).

How many labels does Extend Core have?

One label is on file, entered on June 25, 2014.

  1. Label 33995 (current) Entered June 25, 2014 · on the market · 120 capsules · UPC 8 92727 00042 1

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

Who makes it?

The label names VRP Brand, LLC (distributor), Carson City, NV. All Vitamin Research Products products.

Where next?