Below is every ingredient in the formula, its labelled amount, and what it is genuinely studied for. No proprietary blend — every active is individually listed.
Glucosamine Sulfate 1,000 mg — well studied
The anchor ingredient of the formula and one of the same types of molecules cartilage is built from. Glucosamine has been studied for years as daily support for joint comfort and function, and 1,000 mg is a substantial daily amount rather than a token inclusion. The NCCIH evidence summary is the neutral reference. Sourced from crustacean shellfish — avoid if you have a shellfish allergy.
Chondroitin Sulfate 100 mg — glucosamine's partner
Found naturally in cartilage and studied alongside glucosamine more often than either compound is studied alone. The pairing is the most researched combination in joint nutrition, which is why the two nearly always appear together in serious formulas.
Boswellia Serrata Extract 133.3 mg — studied botanical
A resin extract from the Boswellia tree, used in traditional practice for centuries and one of the more consistently studied botanicals for joint comfort and easier movement in the modern literature.
Turmeric (Curcuma longa) 100 mg — curcuminoid source
The root behind curcumin, among the most heavily researched plant compounds of the past two decades for supporting the body's response to everyday wear. As with any turmeric ingredient, absorption depends heavily on formulation — see our bioavailability guide.
Quercetin 16.7 mg — plant flavonoid
Found naturally in apples, onions and citrus, quercetin is studied for supporting a balanced response to everyday physical wear and is frequently paired with bromelain in joint formulas.
Bromelain Pineapple-derived enzyme
An enzyme extracted from pineapple stem, traditionally combined with quercetin to support the body's balanced response to daily activity and wear.
MSM (Methylsulfonylmethane) Sulfur compound
An organic sulfur-containing compound connective tissue relies on for everyday maintenance. Commonly paired with glucosamine in joint-support formulas, with a research base that is smaller than glucosamine's own.
Methionine Sulfur amino acid
An essential sulfur-containing amino acid included alongside MSM for connective tissue support. Obtained from protein-rich foods in a normal diet; included here as a supporting rather than headline ingredient.
Reading the label properly
Each bottle holds 60 capsules. The daily serving is two capsules, ideally before a meal. Two habits worth adopting when comparing any two joint-supplement labels:
- Check for a proprietary blend. A single total figure covering several ingredients hides how much of each you are actually getting. JointBrex names amounts individually, which is the baseline for a label worth trusting.
- Check the glucosamine amount specifically. It is the ingredient here with the strongest evidence base, so it is the one worth locating precisely on the panel — 1,000 mg is a substantial daily amount.
Always read the current bottle label before use. Manufacturers can revise a formula between production runs, and the label in your hand always overrides any website — including this one.
The shellfish allergy note
Worth repeating here because it is the single most important safety fact about this formula: the glucosamine sulfate is derived from crustacean shellfish. If you have a shellfish allergy, do not take this product.
Next: how these ingredients work together · what they support · ingredient guides on the blog.
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