PlainVitamins

Estro Support

by 21st Century · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 7 40985 27006 6
  • DSLD label 43816
  • Serving 1 tablet

Estro Support by 21st Century lists 14 ingredients, 12 with an amount per serving of 1 tablet, such as 30 IU of vitamin E, 2 mg of thiamine, 2 mg of riboflavin and 20 mg of niacin; 2 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 Estro Support?

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).

Estro Support: Supplement Facts rows against the market (DSLD label 43816, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Eas D-Alpha-Tocopheryl SuccinateVitamin E (Form: as D-Alpha Tocopheryl Succinate)30 IU100%Vitamin E in Estro Support 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).

Thiamineas Thiamine Mononitrate, Vitamin B12 mg133%Thiamin in Estro Support against 9,830 products2 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg2 mg

60% of 9,830 products listing thiamin give more (median 5 mg).

Riboflavinas Vitamin B22 mg118%Riboflavin in Estro Support against 9,824 products2 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg2 mg

60% of 9,824 products listing riboflavin give more (median 4 mg).

Niacinas NiacinamideNiacin (Form: as Niacinamide)20 mg100%Niacin in Estro Support 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)10 mg500%Vitamin B6 in Estro Support against 15,277 products10 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg10 mg

Higher than 55% of 15,277 products listing vitamin B6 (median 6 mg).

Folic Acid400 mcg100%Folate in Estro Support 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 Estro Support 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).

Calciumas Calcium CarbonateCalcium (Form: as Calcium Carbonate)150 mg15%Calcium in Estro Support against 17,831 products150 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg150 mg

Higher than 58% of 17,831 products listing calcium (median 115 mg).

Seleniumas L-SelenomethionineSelenium (Form: as L-Selenomethionine)70 mcg100%Selenium in Estro Support against 7,658 products70 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg70 mcg

Higher than 52% of 7,658 products listing selenium (median 55 mcg).

Blend150 mg
Dateseed extractin the blend, no amount given
Magnolia bark extractin the blend, no amount given
purified Isoflavonesas standardized Soybean extractpurified Isoflavones (Form: from non-GMO standardized Soybean extract)55 mgIsoflavones in Estro Support against 290 products55 mg per serving; the middle half of products list 25 mg to 80 mg, the median 50 mg.55 mg

Higher than 62% of 290 products listing isoflavones (median 50 mg).

Black Cohosh extract40 mgBlack Cohosh in Estro Support against 431 products40 mg per serving; the middle half of products list 40 mg to 160 mg, the median 80 mg.40 mg

68% of 431 products listing black cohosh give more (median 80 mg).

Boronas Boron Amino Acid ChelateBoron (Form: as Boron Amino Acid Chelate)1.5 mgBoron in Estro Support against 3,339 products1.5 mg per serving; the middle half of products list 0.3 mg to 2 mg, the median 1 mg.UL 20 mg1.5 mg

Higher than 58% of 3,339 products listing boron (median 1 mg).

Source: NIH ODS Dietary Supplement Label Database, label 43816 (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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient; 2 ingredients sit inside a blend, so their amounts cannot be compared.

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 Estro Support'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: As a dietary supplement, take one (1) tablet daily before mealtime 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.
This product contains a soybean-based ingredient and should not be taken by those with soy or soybean allergies.
Keep out of reach of children.
Do not use if product appears tampered with or seal is broken.
Contains a soy ingredient.
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 43816.

What else is on the label?

Other ingredients: Cellulose, Croscarmellose Sodium, Maltodextrin, Silicon Dioxide, Stearic Acid, Polydextrose, Magnesium Stearate, Titanium Dioxide, Artificial colors, PEG.

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 Estro Support have?

2 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 43816 (current) Entered March 25, 2015 · on the market · 60 tablets · UPC 7 40985 27006 6
  2. Label 11228 Entered July 25, 2012 · off the market April 1, 2014 · 60 caplets · UPC 7 40985 27006 6

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?