Joint Flex
by Doctor's Best · capsule · 60 veggie caps
- Off the market since October 2017 (NIH)
- UPC 7 53950 00409 2
- DSLD label 60210
- Serving 1 veggie capsule
- 60 servings
Joint Flex by Doctor's Best lists 3 ingredients, 3 with an amount per serving of 1 veggie capsule, such as 40 mg of UC-II standardized cartilage and 500 mg of curcumin C3 complex. Its current label entered the NIH Dietary Supplement Label Database on May 22, 2016.
What is in Joint Flex?
Each row as the label prints it, per serving of 1 veggie capsule. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| UC-II standardized Cartilage | 40 mg | 57% of 199 products listing cartilage give more (median 100 mg). | |
| Total Collagen | 10 mg | 90% of 1,008 products listing collagen give more (median 1 g). | |
| Curcumin C3 Complexas Turmeric | 500 mg | Higher than 72% of 2,369 products listing turmeric (median 150 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 60210 (entered May 22, 2016), 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:
- 57% of the 199 products that print an amount of cartilage list more than its 40 mg of UC-II standardized cartilage (filed by NIH under cartilage) (median 100 mg).
- 90% of the 1,008 products that print an amount of collagen list more than its 0.01 g of total collagen (filed by NIH under collagen) (median 1 g).
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?
1 product lists the very same ingredients; the nearest amounts come first.
- Joint SupportDoctor's Best · off the market same ingredients
- Cartilage ComfortPatient One 1 MediNutritionals 3 shared, 77% alike
- UC-II Collagen With Undenatured Type II CollagenBronson Laboratories · off the market 2 shared, 76% alike
- UC-II Gold 40 mgNutriGold 2 shared, 76% alike
- Joint UC-llLabrada 2 shared, 76% alike
- UC-II Standardized Collagen 10 mgSwanson Ultra 2 shared, 76% alike
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
- Suggested Adult Use: Take 1 capsule daily with food, preferably in the evening before bedtime, or as recommended by a nutritionally-informed physician.
- Allergens and what it does not contain
- Non-GMO / Gluten Free / Soy Free
- Storage
- Store in a cool dry place
Source: label statements in DSLD label 60210.
What else is on the label?
Other ingredients: Modified Cellulose, Rice powder, Magnesium Stearate, Potassium Chloride.
How many labels does Joint Flex have?
One label is on file, entered on May 22, 2016.
- Label 60210 (current) Entered May 22, 2016 · off the market October 20, 2017 · 60 veggie caps · UPC 7 53950 00409 2
DSLD also links this label to: Joint Support (image difference, same product), High Absorption Joint Support (image 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 Doctor's Best, Inc. (distributor), California. All Doctor's Best products.