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 4 of 7).
Every product with what it contains: part 1 · part 2.
- ImmuBlast C Ultimate Orange Flavoron the market · 3 labels2021
- ImmuBlast Citruson the market · 4 labels2025
- Iron 27 mgon the market · 5 labels2023
- Iron 65 mgon the market · 4 labels2023
- K2 MK-7 100 mcgon the market2024
- Krill Oil 350 mgon the market2019
- L-Arginine 1000 mgon the market · 2 labels2019
- L-Lysine 1000 mgon the market2024
- L-Lysine 600 mgon the market · 2 labels2019
- Lecithin 1200 mgon the market2012
- Lutein 10 mgon the market · 3 labels2021
- Lutein 20 mgon the market · 2 labels2019
- Lycopene 25 mgon the market · 4 labels2021
- Magnesium 250 mgon the market · 3 labels2021
- Maximum Strength Biotin 800 mcgon the market2012
- Maximum Strength Co Q10 200 mgon the market2012
- Maximum Strength D3 - 5000 IUon the market2019
- Maximum Strength Glucosamine & Chondroitin Pluson the market · 2 labels2012
- Maximum Strength Glucosamine Relief 1000 mgon the market2015
- Maximum Strength Horny Goat Weed Plus Macaon the market2012
- Mega Multi for Menon the market · 3 labels2022
- Mega Multi for Womenon the market · 4 labels2022
- Melatonin 10 mgon the market · 3 labels2022
- Melatonin 3 mgon the market · 7 labels2023
- Melatonin 5 mgon the market · 4 labels2020
- MgO-400on the market2022
- Milk Thistle Extracton the market · 7 labels2025
- MSMon the market2020
- MSM 1000 mgon the market · 2 labels2022
- Multivitamin/Mineralon the market · 3 labels2023
- Natural E 134 mg (200 IU)on the market2019
- Natural E 268 mg (400 IU)on the market · 2 labels2025
- Natural E-1000on the market2012
- Niacin 100 mgon the market · 3 labels2022
- Niacin 250 mgon the market · 4 labels2022
- Niacin 500 mgon the market · 4 labels2025
- Niacin Inositol Hexanicotinate 500 mgon the market · 2 labels2019
- Niacinamide 500 mgon the market · 4 labels2025
- Norwegian Cod Liver Oil 400 mgon the market · 4 labels2025
- OcuHealth Full Spectrum Formula High Potency Antioxidanton the market2012
- Omega-3 Fish Oil 1000 mgon the market · 3 labels2016
- One Daily Activeon the market2012
- One Daily Adults 50+on the market2012
- One Daily Cholesterol Health With Policosanolon the market2012
- One Daily Energyon the market · 4 labels2022
- One Daily Essentialon the market · 4 labels2022
- One Daily Maximumon the market · 5 labels2025
- One Daily Men's Healthon the market · 2 labels2024
- One Daily Weight Controlon the market2012
- One Daily Women'son the market · 5 labels2024
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.