PlainVitamins

Sentry

by 21st Century · tablet or pill · 500 tablets

  • On the market (NIH)
  • UPC 7 40985 27551 1
  • DSLD label 43771
  • Serving 1 tablet

Sentry by 21st Century lists 31 ingredients, 31 with an amount per serving of 1 tablet, such as 3,500 IU of vitamin A, 60 mg of vitamin C, 400 IU (10 mcg) of vitamin D3 and 30 IU of vitamin E. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2015.

What is in Sentry?

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).

Sentry: Supplement Facts rows against the market (DSLD label 43771, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-Carotene, Vitamin A AcetateVitamin A (Form: as Vitamin A Acetate, and as 29% Beta Carotene)3,500 IU70%Vitamin A in Sentry against 5,772 products3,500 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.3,500 IU

51% of 5,772 products listing vitamin A give more (median 4,000 IU).

Vitamin Cas Ascorbic Acid60 mg100%Vitamin C in Sentry against 18,583 products60 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg60 mg

65% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin D3as Cholecalciferol400 IU (10 mcg)100%Vitamin D in Sentry 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 DL-Alpha-Tocopheryl Acetate30 IU100%Vitamin E in Sentry 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 Kas Phytonadione25 mcg31%Vitamin K in Sentry against 4,607 products25 mcg per serving; the middle half of products list 35 mcg to 100 mcg, the median 80 mcg.DV 120 mcg25 mcg

80% of 4,607 products listing vitamin K give more (median 80 mcg).

Thiamineas Thiamine MononitrateThiamin (Form: as Thiamin Mononitrate)1.5 mg100%Thiamin in Sentry against 9,830 products1.5 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg1.5 mg

66% of 9,830 products listing thiamin give more (median 5 mg).

Riboflavinas Vitamin B21.7 mg100%Riboflavin in Sentry against 9,824 products1.7 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg1.7 mg

64% of 9,824 products listing riboflavin give more (median 4 mg).

Niacinas NiacinamideNiacin (Form: as Niacinamide)20 mg100%Niacin in Sentry against 12,413 products20 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg20 mg

46% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine HCl)2 mg100%Vitamin B6 in Sentry against 15,277 products2 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg2 mg

69% of 15,277 products listing vitamin B6 give more (median 6 mg).

Folic Acid400 mcg100%Folate in Sentry 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 B12 (Form: as Cyanocobalamin)6 mcg100%Vitamin B12 in Sentry against 14,425 products6 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg6 mcg

74% of 14,425 products listing vitamin B12 give more (median 36 mcg).

Biotin30 mcg10%Biotin in Sentry against 9,447 products30 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg30 mcg

83% of 9,447 products listing biotin give more (median 200 mcg).

Pantothenic Acidas D-Calcium PantothenatePantothenic Acid (Form: as D-Calcium Pantothenate)10 mg100%Pantothenic Acid (Vitamin B5) in Sentry against 10,060 products10 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg10 mg

52% of 10,060 products listing pantothenic acid (vitamin B5) give more (median 12 mg).

Calciumas Calcium Carbonate, Dicalcium PhosphateCalcium (Form: as Dicalcium Phosphate, & {Calcium} Carbonate)200 mg20%Calcium in Sentry against 17,831 products200 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg200 mg

Higher than 64% of 17,831 products listing calcium (median 115 mg).

Ironas Ferrous FumarateIron (Form: as Ferrous Fumarate)18 mg100%Iron in Sentry against 6,910 products18 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg18 mg

Higher than 74% of 6,910 products listing iron (median 5 mg).

Phosphorusas Dicalcium PhosphatePhosphorus (Form: as Dicalcium Phosphate)20 mg2%Phosphorus in Sentry against 3,786 products20 mg per serving; the middle half of products list 45 mg to 200 mg, the median 90 mg.DV 1,250 mgUL 4,000 mg20 mg

88% of 3,786 products listing phosphorus give more (median 90 mg).

Iodineas Potassium IodideIodine (Form: as Potassium Iodide)150 mcg100%Iodine in Sentry against 6,382 products150 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg150 mcg

15% of 6,382 products listing iodine give more (median 150 mcg).

Magnesiumas Magnesium OxideMagnesium (Form: as Magnesium Oxide)50 mg13%Magnesium in Sentry against 14,003 products50 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg50 mg

59% of 14,003 products listing magnesium give more (median 86 mg).

Zincas Zinc OxideZinc (Form: as Zinc Oxide)11 mg73%Zinc in Sentry against 13,186 products11 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg11 mg

47% of 13,186 products listing zinc give more (median 11 mg).

Seleniumas Sodium SelenateSelenium (Form: as Sodium Selenate)55 mcg79%Selenium in Sentry against 7,658 products55 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg55 mcg

50% of 7,658 products listing selenium give more (median 55 mcg).

Copperas Copper SulfateCopper (Form: as Copper Sulfate)0.5 mg25%Copper in Sentry 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).

Manganeseas Manganese SulfateManganese (Form: as Manganese Sulfate)2.3 mg115%Manganese in Sentry against 7,016 products2.3 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg2.3 mg

Higher than 62% of 7,016 products listing manganese (median 2 mg).

Chromiumas Chromium PicolinateChromium (Form: as Chromium Picolinate)35 mcg29%Chromium in Sentry against 7,825 products35 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg35 mcg

77% of 7,825 products listing chromium give more (median 100 mcg).

Molybdenumas Sodium MolybdateMolybdenum (Form: as Sodium Molybdate)45 mcg60%Molybdenum in Sentry against 4,390 products45 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg45 mcg

55% of 4,390 products listing molybdenum give more (median 50 mcg).

Chlorideas Potassium ChlorideChloride (Form: as Potassium Chloride)72 mg2%Chloride in Sentry against 1,476 products72 mg per serving; the middle half of products list 60 mg to 183.5 mg, the median 75 mg.DV 2,300 mgUL 3,600 mg72 mg

51% of 1,476 products listing chloride give more (median 75 mg).

Potassiumas Potassium ChloridePotassium (Form: as Potassium Chloride)80 mg2%Potassium in Sentry against 11,614 products80 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg80 mg

59% of 11,614 products listing potassium give more (median 99 mg).

Boronas BoratesBoron (Form: as Borates)75 mcgBoron in Sentry against 3,339 products0.075 mg per serving; the middle half of products list 0.3 mg to 2 mg, the median 1 mg.UL 20 mg0.075 mg

94% of 3,339 products listing boron give more (median 1 mg).

Tinas Stannous ChlorideTin (Form: as Stannous Chloride)10 mcgTin in Sentry against 174 products10 mcg per serving; the middle half of products list 10 mcg to 10 mcg, the median 10 mcg.10 mcg

2% of 174 products listing tin give more (median 10 mcg).

Nickelas Nickelous SulfateNickel (Form: as Nickelous Sulfate)5 mcgNickel in Sentry against 317 products5 mcg per serving; the middle half of products list 5 mcg to 5 mcg, the median 5 mcg.UL 1,000 mcg5 mcg

9% of 317 products listing nickel give more (median 5 mcg).

Siliconas Silicon DioxideSilicon (Form: as Silicon Dioxide)2 mgSilicon in Sentry against 1,220 products2 mg per serving; the middle half of products list 2 mg to 10.5 mg, the median 4 mg.2 mg

61% of 1,220 products listing silicon give more (median 4 mg).

Vanadiumas Sodium MetavanadateVanadium (Form: as Sodium Metavanadate)10 mcgVanadium in Sentry against 1,744 products10 mcg per serving; the middle half of products list 10 mcg to 100 mcg, the median 25 mcg.UL 1,800 mcg10 mcg

60% of 1,744 products listing vanadium give more (median 25 mcg).

Source: NIH ODS Dietary Supplement Label Database, label 43771 (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:

  • 83% of the 9,447 products that print an amount of biotin list more than its 30 mcg of biotin (median 200 mcg).
  • 88% of the 3,786 products that print an amount of phosphorus list more than its 20 mg of phosphorus (median 90 mg).
  • 94% of the 3,339 products that print an amount of boron list more than its 0.075 mg of boron (median 1 mg).
  • 2% of the 174 products that print an amount of tin list more than its 10 mcg of tin (median 10 mcg).
  • 9% of the 317 products that print an amount of nickel list more than its 5 mcg of nickel (median 5 mcg).
  • 60% of the 1,744 products that print an amount of vanadium list more than its 10 mcg of vanadium (median 25 mcg).

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?

6 products list 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
Directions: As a dietary supplement, adults take one (1) tablet daily with any meal or as directed by your healthcare provider. Do not exceed recommended dosage. Individual results may vary.
Warnings
Warning: Consult a healthcare provider prior to use if: pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.
Stop use and contact a physician if adverse reactions occur.
Keep out of reach of children.
Do not use if product appears to be tampered with or seal is broken.
Important Information: Extended use of high levels of Vitamin A (excluding Beta Carotene as the source) may increase the risk to adults of developing osteoporosis. Do not use this product if using other Vitamin A supplements.
WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of the reach of children. In case of accidental overdose, call a doctor or Poison Control Center immediately.
Allergens and what it does not contain
No added Sugar, Yeast, Preservatives or Artificial Flavors.
Storage
Store at room temperature.

Source: label statements in DSLD label 43771.

What else is on the label?

Other ingredients: Cellulose, Starch, Stearic Acid, Polyvinyl Alcohol, Titanium Dioxide, Croscarmellose Sodium, PEG, Silicon Dioxide, Talc, Magnesium Stearate, Citric Acid, Artificial color.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): LABORATORY TESTED GUARANTEED QUALITY.

How many labels does Sentry have?

6 labels are on file under this name since July 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 43771 (current) Entered March 25, 2015 · on the market · 500 tablets · UPC 7 40985 27551 1
  2. Label 43769 Entered March 25, 2015 · off the market March 14, 2019 · 300 tablets · UPC 7 40985 22702 2
  3. Label 43767 Entered March 25, 2015 · off the market March 14, 2019 · 130 tablets · UPC 7 40985 22380 2
  4. Label 43765 Entered March 25, 2015 · on the market · 100 tablets · UPC 7 40985 27317 3
  5. Label 11575 Entered July 25, 2012 · off the market March 12, 2015 · 130 tablets · UPC 7 40985 22380 2
  6. Label 11572 Entered July 25, 2012 · off the market March 12, 2015 · 300 tablets · UPC 7 40985 22702 2

DSLD also links this label to: Sentry Adults (package size difference, same product), Sentry Adults (package size difference, same product), Sentry Adults (package size difference, same product), Sentry Adults (package size difference, same product), Sentry Adults (package size difference, same product), Sentry Adults (package size 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 21st Century Healthcare, Inc. (manufacturer), Tempe, AZ. All 21st Century products.

Where next?