Flex Support

by Zoi Research · tablet or pill · 90 vegetarian tablets

  • On the market (NIH)
  • UPC 8 98220 01610 5
  • DSLD label 272390
  • Serving 4 tablets
  • 23 servings

Flex Support by Zoi Research lists 22 ingredients, 2 with an amount per serving of 4 tablets, such as 1,500 mg of glucosamine HCl and 1,500 mg of methylsulfonylmethane; 20 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on September 22, 2022.

What is in Flex Support?

Each row as the label prints it, per serving of 4 tablets. 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).

Flex Support: Supplement Facts rows against the market (DSLD label 272390, January 2026 release)
IngredientAmount% DVAmong products listing it
Glucosamine HCl1,500 mgGlucosamine Hydrochloride in Flex Support against 628 products1.5 g per serving; the middle half of products list 0.75 g to 1.5 g, the median 1.5 g.1.5 g

5% of 628 products listing glucosamine hydrochloride give more (median 1.5 g).

Methylsulfonylmethane1,500 mgMethylsulfonylmethane in Flex Support against 1,454 products1,500 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.1,500 mg

Higher than 88% of 1,454 products listing methylsulfonylmethane (median 500 mg).

Proprietary Flex Support Blend360 mg
Turmeric root powderin the blend, no amount given
Turmeric root extractin the blend, no amount given
Ginger root extractin the blend, no amount given
Boswellia gum resin extractin the blend, no amount given
Hyaluronic Acidas Sodium Hyaluronatein the blend, no amount given
Proprietary Absorption Blendno amount given
Turmeric root powderin the blend, no amount given
Turmeric root extractin the blend, no amount given
Ginger root extractin the blend, no amount given
Boswellia gum resin extractin the blend, no amount given
Hyaluronic Acidas Sodium Hyaluronatein the blend, no amount given
Proprietary Absorption Blend25 mg
Black Pepper fruit extractin the blend, no amount given
Ginger root extractin the blend, no amount given
Long Pepperin the blend, no amount given
Black Pepperin the blend, no amount given
Enzyme Blendin the blend, no amount given
Amylasein the blend, no amount given
Proteasein the blend, no amount given
Lipasein the blend, no amount given
Cellulasein the blend, no amount given
Lactasein the blend, no amount given
Bacillus coagulansin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 272390 (entered September 22, 2022), version 9.4.0. See the label on DSLD or its label image (PDF). 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; 20 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 Flex 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
Suggested Usage: Take 4 tablets daily with food, or as recommended by a healthcare professional.
Warnings
Warnings: Keep out of the reach of children. Pregnant or lactating women, the chronically ill, elderly, individuals under the age of 18, those taking prescription medications (e.g., blood thinners) as well as those with a physician-diagnosed medical condition should consult with a physician, pharmacist, naturopath or other qualified healthcare professional prior to taking dietary supplements.
Pregnant or lactating women, the chronically ill, elderly, individuals under the age of 18, those taking prescription medications (e.g., blood thinners) as well as those with a physician-diagnosed medical condition should consult with a physician, pharmacist, naturopath or other qualified healthcare professional prior to taking dietary supplements.
Sealed for your protection. Do not use if seal is missing or broken.
Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, or soy. Produced in a third-party, audited and registered cGMP compliant facility that may process other products that contain these allergens or ingredients.
Allergens and what it does not contain
Not manufactured with milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, or soy.
Storage
Best stored at controlled room temperature 20 degrees C to 25 degrees C (68 degrees F to 77 degrees F). Improper storage conditions, such as extended exposure to direct sunlight, high heat & humidity can cause product degradation over time.

Source: label statements in DSLD label 272390.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Ginger Oil, Hydroxypropyl Methylcellulose, Riboflavin, Polyethylene Glycol, Titanium Dioxide.

How many labels does Flex Support have?

One label is on file, entered on September 22, 2022.

  1. Label 272390 (current) Entered September 22, 2022 · on the market · 90 vegetarian tablets · UPC 8 98220 01610 5

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Madre Labs, LLC (distributor), Pasadena, CA. All Zoi Research products.

Where next?