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Skin / Joint

Glucosamine · Glucosamine Sulfate

Classic joint supplement with modest osteoarthritis data and large cohort studies linking regular use to lower mortality.

C
Evidence grade
Mixed / small human trials

Short answer

Reasonable bet for creaky knees. The longevity angle is association, not proof.

Product and dose overview

Glucosamine (Glucosamine Sulfate) is a skin / joint with evidence grade C, meaning it is backed by mixed or small human trials. We track 1 products containing Glucosamine. Typical doses range from 500 to 500 mg per serving. The top-ranked product scores 6.3 out of 10 on our composite scale (dose, evidence, price, testing, transparency). Prices range up to $89.00 per month.

Evidence grade: C Products in database: 1 Category: Skin / Joint

Top Glucosamine products

ProductBrandDosePrice/mo3rd-party testedScore
NOVOS CoreNOVOS Labs500 mg$89.00Yes6.3

Scores are editorial judgments, not a scientific standard. See how we score.

What it is

Glucosamine is a building block your body uses to make and repair cartilage. The sulfate salt is the form with the most human trials behind it.

Why people take it

For knee osteoarthritis, trials and systematic reviews show small symptom improvements, mostly for the sulfate form taken daily for months. Separately, people who report taking glucosamine regularly in large population surveys die less often during follow-up — an association that cannot prove cause but has been replicated.

Our verdict

Reasonable bet for creaky knees. The longevity angle is association, not proof.

Structure & class

Amino monosaccharide, precursor of glycosaminoglycans in cartilage matrix. Crystalline glucosamine sulfate is the reference form in European trials.

Mechanism & clinical data

Systematic reviews (e.g. Meng et al. 2023) find small-to-moderate effects on pain and function in knee OA, strongest for crystalline glucosamine sulfate. A 2023 systematic review of cohort studies (King & Xiang) and NHANES analyses associate habitual use with roughly 15% lower all-cause mortality; residual confounding (healthy-user bias) is likely.

Pharmacokinetics

Plasma half-life ~15 hours after repeated dosing; cartilage effects accumulate over weeks.

Dose & forms

Trial dose
1500 mg
/ day
Range in trials
1500 to 1500 mg
/ day
Common forms
Crystalline glucosamine sulfate, Glucosamine hydrochloride

What to watch out for

The hydrochloride form has weaker evidence. Often paired with chondroitin, which adds little. Shellfish-derived sources matter if you are allergic.

Where this dose comes from

The trial dose above is our editorial pick from the published human trials for this ingredient. We choose the dose that the best-available studies used on the endpoint most relevant to longevity. The range shows the lowest and highest doses tested in published trials. The landmark studies below are the papers we read to set it. You can click through and check our work.

When new trials publish, our automated sweeps flag them. If a new study materially changes the dose, we update it through editorial review and record the old dose, new dose, and the triggering study in every affected product's recommendation history. The dose is never changed automatically.

Regulatory status

EUMedicinal product in some member states, supplement in others
USDietary supplement
UKFood supplement
CANHP permitted

Timeline

Regulatory events, evidence grade changes, and key research milestones for Glucosamine, most recent first. Studies link to the paper; regulatory entries name and link the responsible authority.

  • 2025-04 Regulatory single source
    EU Court sharpens the bar for botanical health claims
    A Court of Justice of the European Union ruling in April 2025 further tightened the requirements for how botanical ingredients (herbs, plant extracts) can be marketed with health claims in the EU, effectively removing much of the flexibility of the on-hold list.
  • 2024-06 Regulatory confirmed
    EU report identifies 117 supplement substances as potential health risks
    The HoA Working Group on Food Supplements (26 European countries) published its first report evaluating 117 substances used in food supplements. Of these, 65 were assessed as likely novel foods, 6 were already regulated, 34 had insufficient data, and 12 were prioritized for Article 8 restriction under Regulation (EC) No 1925/2006. The 12 priority substances include ashwagandha, curcumin, melatonin, piperine, St. John's wort, coumarin, p-synephrine, maca, holy basil, Melaleuca, black cohosh, and L-tryptophan. The report drew on 1,500 RASFF alerts reviewed between 2017 and mid-2022.
    Source →
  • 2023 Research milestone
    Meng et al. 2023 (systematic review, knee OA)
    Systematic review found glucosamine among the more effective conservative options for knee osteoarthritis pain and function.
    Source →
  • 2020 Research milestone
    King & Xiang 2020 (NHANES cohort)
    Regular glucosamine/chondroitin use associated with 39% lower all-cause and 65% lower cardiovascular mortality in a US cohort of 16,686 adults (observational, not causal).
    Source →
  • 2006-12 Regulatory confirmed
    EU Health Claims Regulation adopted
    Regulation (EC) No 1924/2006 laid down harmonised rules for nutrition and health claims made on foods, including supplements. Only claims listed in the EU Register of authorised claims can be used. Rejected botanical claims are held in a separate on-hold list.
    Source →
  • 1997 Regulatory confirmed
    EU introduces the Novel Food Regulation
    Regulation (EC) No 258/97 required any food or food ingredient without a history of consumption in the EU before 15 May 1997 to be authorised before being placed on the market. This is the framework that captures NMN, spermidine as a supplement ingredient, urolithin A, and many other longevity actives.
    Source →

Landmark studies

Found in these products (1)

All products in our catalog that contain Glucosamine, ranked by our overall score. Ranking is editorial, never paid.

NOVOS Labs
NOVOS Core
Longevity stack
Ingredients listed
12 ingredients listedlargest listed: Glycine 1,000 mg
Price per serving
$2.97$89.00 · 30 servings
Testing
3rd-party listed · no public lab certificate

Multi-ingredient bundle

Status as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Score & research context 6.3/10

Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.

50%
of trial dose
$14.83
per research-dose day, not label serving
0Trial dose2×
Catalog price · Confirm current price with novoslabs.com
Editorial guides

Buying guides and comparisons

Neighbouring molecules

Related ingredients

See all in Skin / Joint →

Molecules in the same class, plus the actives most often formulated alongside Glucosamine in our catalogue.

Hyaluronic AcidBsame categoryMSMCsame categoryChondroitinCsame categoryVitamin CAstacked together in 1 productLithium (microdose)Dstacked together in 1 productFisetinCstacked together in 1 productPterostilbeneDstacked together in 1 productL-TheanineBstacked together in 1 product
Product shelves
See all in Longevity stack (1)

See Glucosamine in context: the mechanism it acts through, the biomarker it moves, the products that dose it, and the trials that tested it.

View Glucosamine on the Longevity Map →

Frequently asked questions

What is Glucosamine?

Glucosamine is a building block your body uses to make and repair cartilage. The sulfate salt is the form with the most human trials behind it.

What dose of Glucosamine should I take?

The trial dose in published human studies is 1500 mg per day, with a range of 1500 to 1500 mg per day. Always consult a qualified clinician before starting any supplement.

Is Glucosamine safe?

The hydrochloride form has weaker evidence. Often paired with chondroitin, which adds little. Shellfish-derived sources matter if you are allergic.

What is the best Glucosamine supplement?

We track 1 products containing Glucosamine. The top-ranked product scores 6.3 out of 10 on our composite scale, which evaluates dose, evidence, price, third-party testing, and transparency. See the comparison table above. Scores are editorial judgments, not a scientific standard.

What is the evidence grade for Glucosamine?

Glucosamine has evidence grade C, meaning it is backed by mixed or small human trials. Grade A means replicated human RCTs with hard endpoints. Grade B means human RCTs with biomarker outcomes. Grade C means mixed or small human trials. See our evidence grading methodology.

Independently checked

Data verification

Evidence grade
C
Mixed / small human trials
Research dose
1500 mg
Products tracked
1
Updated continuously
Safety signal
The hydrochloride form has weaker evidence. Often paired ...

Evidence grades are reviewed when new human RCTs are published. Product counts update automatically as new products are added. Dose ranges reflect published trial data, not brand recommendations. Read how we verify.