Brand
21st Century supplements
21st Century has 338 products in the NIH Dietary Supplement Label Database (798 labels), 254 of them on the market at its January 2026 release; its labels most often list calcium, vitamin D, vitamin C. It ranks 49 of 5,741 brands by products on file.
- Products on file
- 338798 labels, sizes and designs counted
- On the market
- 25475% of its products
- Labels disclosing no amount
- 1products whose label gives no amount per ingredient
- On file since
- 2012newest label July 24, 2025
What do 21st Century labels contain?
The ingredients its products list most, with its median amount per serving against the median of every product listing the same ingredient.
| Ingredient | Its products | Its median | Market median |
|---|---|---|---|
| Calcium | 160 | 166 mg | 115 mg |
| Vitamin D | 92 | 12.5 mcg | 15 mcg |
| Vitamin C | 88 | 120 mg | 100 mg |
| Zinc | 68 | 15 mg | 11 mg |
| Vitamin B6 | 58 | 5 mg | 6 mg |
| Niacin | 57 | 20 mg | 20 mg |
| Vitamin B12 | 56 | 21.5 mcg | 36 mcg |
| Riboflavin | 51 | 2.13 mg | 4 mg |
| Thiamin | 51 | 2.4 mg | 5 mg |
| Copper | 47 | 1.6 mg | 1 mg |
Source: Supplement Facts rows of 21st Century's current labels and of every product's, NIH ODS Dietary Supplement Label Database version 9.4.0.
Every 21st Century product
On-market products first, A to Z (page 7 of 7).
Every product with what it contains: part 1 · part 2.
- High Potency Biotin 800 mcgoff the market2013
- High Potency Calcium 1000 +D3off the market2015
- High Potency D3-1000 IUoff the market2016
- High Potency Probiotic Blend Acidophilusoff the market2012
- High-Potency Acidophilusoff the market · 3 labels2018
- Horse Chestnut Seed Extractoff the market2015
- Krill Oil 300 mgoff the market2016
- Maximum Strength Daily Amino Acidoff the market2012
- Maximum Strength Glucosamine Relief 1000 mg Bonus Sizeoff the market2012
- MgO 400 mgoff the market2019
- MSM-1000off the market2012
- Multivitaminoff the market2012
- Natural B Complex with Coff the market · 2 labels2013
- Natural C-500 with Rose Hipsoff the market2012
- Natural E 400 IUoff the market2020
- Natural E-400off the market2012
- New Zealand Colostrum 500 mgoff the market2012
- Norwegian Cod Liver Oiloff the market2012
- One Daily Men's 50+off the market · 5 labels2025
- One Daily Men's Health with Lycopeneoff the market · 3 labels2020
- Original Formula Glucosamine & Chondroitinoff the market2012
- Potassium 99 mgoff the market2012
- Prolonged Release B-12 1000 mcgoff the market · 2 labels2013
- Red Yeast Riceoff the market · 2 labels2020
- Red Yeast Rice Extractoff the market2012
- Saw Palmetto Extractoff the market · 2 labels2015
- Smart Kids Omega plus DHAoff the market2015
- Standardized Black Cohosh & Soy Isoflavonesoff the market2012
- Standardized Saw Palmetto Extractoff the market · 3 labels2015
- Super Collagen plus Vitamin Coff the market2020
- Super Potency Biotin 5000 mcgoff the market2013
- Super Strength Acidophilus Probiotic Blendoff the market2016
- Therapeutic-M with Luteinoff the market2012
- Ultra Potency Advanced Probioticoff the market2015
- Ultra Potency Biotin 10,000 mcgoff the market2015
- Vitamin A 10,000 IUoff the market · 2 labels2013
- Vitamin D-2000off the market2012
- Vitamin E Oil 30,000 IUoff the market · 2 labels2015
What kinds of products does 21st Century make?
21st Century products by DSLD product type
When did its products enter the database, and which are still sold?
| Year | On the market | Off the market |
|---|---|---|
| 2012 | 48 | 36 |
| 2013 | 5 | 8 |
| 2015 | 13 | 16 |
| 2016 | 0 | 7 |
| 2018 | 0 | 1 |
| 2019 | 67 | 5 |
| 2020 | 1 | 9 |
| 2021 | 33 | 0 |
| 2022 | 20 | 0 |
| 2023 | 16 | 1 |
| 2024 | 9 | 0 |
| 2025 | 42 | 1 |
Source: NIH Dietary Supplement Label Database label entry dates and market events, version 9.4.0.
Who is behind it?
Its labels most often name 21st Century HealthCare, Inc. (manufacturer), Tempe, AZ, on 298 products.
Where next?
How to read a brand's figures, and what labels cannot tell you about a brand: comparing supplement brands by their labels. Label data, not medical advice.