PlainVitamins

JointFlex+

by Herbs SRA · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • DSLD label 316178
  • Serving 500 mg (2 Vegetarian Capsules); amounts per 2 mg
  • 60 servings

JointFlex+ by Herbs SRA lists 10 ingredients, 10 with an amount per serving of 2 mg, such as 90 mg of D-glucosamine hydrochloride, 85 mg of chondroitin, 80 mg of shark cartilage and 60 mg of hyaluronic acid. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.

What is in JointFlex+?

Each row as the label prints it, per serving of 2 mg. 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).

JointFlex+: Supplement Facts rows against the market (DSLD label 316178, January 2026 release)
IngredientAmount% DVAmong products listing it
D-Glucosamine Hydrochloride90 mgGlucosamine Hydrochloride in JointFlex+ against 628 products0.09 g per serving; the middle half of products list 0.75 g to 1.5 g, the median 1.5 g.0.09 g

96% of 628 products listing glucosamine hydrochloride give more (median 1.5 g). Per day at the most servings: 0.18 g.

Chondroitinas Chondroitin Sulfate85 mgChondroitin (unspecified) in JointFlex+ against 47 products85 mg per serving; the middle half of products list 157 mg to 850 mg, the median 400 mg.85 mg

81% of 47 products listing chondroitin (unspecified) give more (median 400 mg). Per day at the most servings: 170 mg.

Shark Cartilage80 mgCartilage in JointFlex+ against 199 products80 mg per serving; the middle half of products list 40 mg to 750 mg, the median 100 mg.80 mg

53% of 199 products listing cartilage give more (median 100 mg). Per day at the most servings: 160 mg.

Hyaluronic Acidas Sodium Hyaluronate60 mgHyaluronic acid in JointFlex+ against 900 products60 mg per serving; the middle half of products list 10 mg to 100 mg, the median 50 mg.60 mg

Higher than 57% of 900 products listing hyaluronic acid (median 50 mg). Per day at the most servings: 120 mg.

Collagen, Hydrolyzedas Chicken50 mgCollagen in JointFlex+ against 1,008 products0.05 g per serving; the middle half of products list 0.1 g to 4.2 g, the median 1 g.0.05 g

80% of 1,008 products listing collagen give more (median 1 g). Per day at the most servings: 0.1 g.

Methylsulfonylmethane45 mgMethylsulfonylmethane in JointFlex+ against 1,454 products45 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.45 mg

92% of 1,454 products listing methylsulfonylmethane give more (median 500 mg). Per day at the most servings: 90 mg.

Vitamin Cas Ascorbic Acid40 mg44%*Vitamin C in JointFlex+ against 18,583 products40 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg40 mg

81% of 18,583 products listing vitamin C give more (median 100 mg). Per day at the most servings: 80 mg.

Magnesiumas Magnesium Glycinate25 mg6%*Magnesium in JointFlex+ against 14,003 products25 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg25 mg

77% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 50 mg.

Zincas Zinc Citrate20 mg182%*Zinc in JointFlex+ against 13,186 products20 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg20 mg

Higher than 79% of 13,186 products listing zinc (median 11 mg). Per day at the most servings: 40 mg.

Vitamin D3as Cholecalciferol5 mg25,000%*

This amount is far outside what other labels list for vitamin D, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD.

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 316178 (entered June 20, 2024), 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?

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:

  • 96% of the 628 products that print an amount of glucosamine hydrochloride list more than its 0.09 g of D-glucosamine hydrochloride (filed by NIH under glucosamine hydrochloride) (median 1.5 g).
  • 92% of the 1,454 products that print an amount of methylsulfonylmethane list more than its 45 mg of methylsulfonylmethane (median 500 mg).

The NIH database records 2 servings 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 JointFlex+'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 Use: As a dietary supplement, take two (2) capsules twice daily. For best result, take capsules in the morning and in the afternoon with 8 oz of water.
Warnings
Caution: Do not exceed recommended dose.
Pregnant or nursing mothers, children under the age of 18 and individuals with a known medical condition should consult a physician before using this or any dietary supplement.
Pregnant or nursing mothers, children under the age of 18 and individuals with a known medical condition should consult a physician before using this or any dietary supplement. Keep out of reach of children.
Do not use if safety seal is damaged or missing.
Allergen Information: Contains shellfish, Fish (Shark).
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 316178.

What else is on the label?

Other ingredients: Cellulose.

How many labels does JointFlex+ have?

One label is on file, entered on June 20, 2024.

  1. Label 316178 (current) Entered June 20, 2024 · on the market · 120 vegetarian capsules

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

Who makes it?

The label names Herbs SRA (distributor), Houston, TX. All Herbs SRA products.

Where next?