Official product information
Glucosamine and Chondroitin in Nervecept: 500 mg and 50 mg Per Capsule
Glucosamine and chondroitin in Nervecept come to 500 mg and 50 mg per capsule, one capsule a day. The best-known trial used 1,500 mg and 1,200 mg a day, so the capsule holds a third of one dose and about 4% of the other. The label says it contains shellfish. Trials looked at knees, not nerves.
Written by the Nervecept label deskUpdated
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What are glucosamine and chondroitin in Nervecept?
Glucosamine and chondroitin in Nervecept are two of the eight label lines: 500 mg of glucosamine sulfate and 50 mg of chondroitin sulfate in each capsule.
Glucosamine is an amino sugar, and this label's source is shellfish. Chondroitin is a structural part of cartilage and connective tissue.
Both are sold for joint comfort. Their best research is in knee osteoarthritis, a joint condition, not a nerve condition.
Together they make up 550 mg of the roughly 699 mg of listed ingredients in a capsule, so the pair is the backbone of the formula by weight. The sales page calls glucosamine a compound the body makes naturally. That is a fair description, and it does not say the capsule does anything for nerves. (Nervecept sales page) The whole panel is on the Supplement Facts page.
Dose check02
How much glucosamine and chondroitin is in Nervecept compared with studies?
A Nervecept capsule holds 500 mg of glucosamine and 50 mg of chondroitin. The GAIT trial used 1,500 mg and 1,200 mg a day, so the capsule holds 33% and 4.2% of those amounts.
The label dose is one capsule a day, so following the label never reaches the trial doses. These studies tested the ingredients alone, not Nervecept.
| Name on the label | Glucosamine Sulfate |
|---|---|
| What it is | Amino sugar; often made from shellfish shells (the label says CONTAINS: Shellfish (Crayfish)) |
| Amount per capsule | 500 mg per capsule |
| Amount used in research | 1,500 mg a day (GAIT trial, knee osteoarthritis) |
| Label share of that amount | 33% of the 1,500 mg a day used in the GAIT trial |
| Strength of evidence | Mixed for knee osteoarthritis; no trial in nerve conditions found |
| Marketed or traditional use | Sold for joint comfort |
| Main caution | May raise blood glucose in some people; linked to more bleeding risk, including with warfarin; shellfish allergen on this label. |
| Note | In the 24-week GAIT trial of 1,583 adults, glucosamine did not beat placebo overall. |
| Name on the label | Chondroitin Sulfate |
|---|---|
| What it is | A structural part of cartilage and connective tissue |
| Amount per capsule | 50 mg per capsule |
| Amount used in research | 1,200 mg a day (GAIT trial, knee osteoarthritis) |
| Label share of that amount | 4.2% of the 1,200 mg a day used in the GAIT trial |
| Strength of evidence | Mixed for knee osteoarthritis; no trial in nerve conditions found |
| Marketed or traditional use | Sold for joint comfort |
| Main caution | Linked to more bleeding risk in some people, including with warfarin. |
The GAIT doses are simply the ones that trial used. Other studies used other products, so 33% is a rough guide, not a measure of how the capsule works. See label amount vs studied dose for all eight lines.
Research03
What did trials find for glucosamine and chondroitin?
Results are mixed. In the 24-week GAIT trial of 1,583 adults with knee osteoarthritis, glucosamine, chondroitin and the pair did not beat placebo overall for pain.
None of this work tested nerves, and none tested Nervecept.
| Source | Who and how long | What it found |
|---|---|---|
| GAIT trial (NIH, GAIT Trial News Release) | 1,583 adults, knee osteoarthritis, 24 weeks | No significant difference from placebo (about 60%) in reaching a 20% pain reduction |
| GAIT subgroup (NIH, GAIT Trial News Release) | The 22% with moderate-to-severe pain | The pair worked for about 79% versus 54% on placebo, called preliminary |
| 2018 analysis (NCCIH, Glucosamine and Chondroitin) | 29 studies, 6,120 people | Either alone reduced knee pain; the combination did not |
| 2008 trial (NCCIH, Glucosamine and Chondroitin) | 572 people, two years | No difference in joint space width versus placebo |
Guidelines split as well: two 2019 guidelines recommend against both for knee osteoarthritis, and a 2021 one lists them as supplements that may help, with inconsistent evidence. (NCCIH, Glucosamine and Chondroitin)
Allergen04
Is glucosamine safe with a shellfish allergy?
Not automatically. Glucosamine is often made from shellfish shells, and the Nervecept label says CONTAINS: Shellfish (Crayfish), so anyone with a shellfish allergy should ask a clinician first.
FDA names crustacean shellfish as a major allergen, and supplements fall under the same labeling rule. (FDA, Food Allergies) The label does not say how much shellfish protein a capsule holds.
Do not use this product unless your doctor or allergist says it is fine for you. Swelling of the lips or throat, trouble breathing or hives after a capsule needs 911.
Nervecept: from $49 a bottlePacks of 2, 3 or 6 bottles · 30 capsules each · refund window 60 days
See packsMedicine cautions05
Can glucosamine and chondroitin affect blood thinners and blood sugar?
Yes, they can matter. Glucosamine and chondroitin have both been linked to more bleeding risk in people taking warfarin, and glucosamine may raise blood glucose in some people. (NCCIH, Glucosamine and Chondroitin)
Keep taking prescribed medicine exactly as directed. A supplement is no reason to stop or change it.
| Situation | Why it matters |
|---|---|
| Warfarin or another blood thinner | More bleeding risk was reported with warfarin (NCCIH, Glucosamine and Chondroitin). Tell whoever manages it. |
| Diabetes medicine | Glucosamine may raise blood glucose (NCCIH, Glucosamine and Chondroitin). Ask your pharmacist. |
| Surgery coming | Some supplements raise bleeding risk or change the response to anesthesia. Tell the surgeon early. (NCCIH, Using Supplements Wisely) |
| Pregnant, nursing or under 18 | The label asks you to consult a physician first. |
More on this in supplements and blood thinners and side effects.
Nerve claims06
Does glucosamine or chondroitin help nerves?
We found no trial of glucosamine or chondroitin in a nerve condition, so the research on these two lines does not back any nerve wording on the bottle or the sales page.
No supplement treats neuropathy, and neuropathy has many causes that a doctor has to sort out. (NINDS, Peripheral Neuropathy)
The studies measured knee pain, function and joint space. Mayo Clinic advises seeing a doctor when numbness or tingling starts or gets worse. (Mayo Clinic, Peripheral Neuropathy) Our neuropathy basics guide lists the warning signs.
Before you buy07
What should you check before taking glucosamine and chondroitin?
Check shellfish allergy, blood thinners, diabetes medicines, coming surgery, and pregnancy or age before taking glucosamine and chondroitin in Nervecept.
If none applies, the label says one capsule daily with 8 oz of water, and not to exceed the recommended dose.
- Read the allergen line on the bottle.
- Show the Supplement Facts to your pharmacist.
- Remember no trial tested the capsules.
How to take Nervecept covers timing, and pricing lists the packs we read on October 18, 2026.
See Nervecept on the sales pageFAQ08
What do people ask about glucosamine and chondroitin?
A common question first: How much glucosamine is in Nervecept? It and 5 more are answered below.
Every answer gives the short reply first and the reasoning after, with a source when we have one.
How much glucosamine is in Nervecept?
Each Nervecept capsule lists 500 mg of glucosamine sulfate, the largest line on the label. At one capsule a day that is 500 mg daily, a third of the 1,500 mg a day used in the GAIT knee trial. (NIH, GAIT Trial News Release)
Is glucosamine safe with a shellfish allergy?
Not automatically. Glucosamine is often made from shellfish shells, and this label says CONTAINS: Shellfish (Crayfish). With a shellfish allergy, ask an allergist or doctor before you take this product. (FDA, Food Allergies)
Does glucosamine affect blood sugar?
It may in some people. NCCIH says glucosamine may raise blood glucose in some people. If you have diabetes or take a diabetes medicine, ask your doctor or pharmacist before starting. (NCCIH, Glucosamine and Chondroitin)
Does glucosamine interact with warfarin?
There is a known caution. NCCIH reports that glucosamine and chondroitin have both been linked to more bleeding risk in people taking warfarin. Tell the clinician who manages your blood thinner before you start. (NCCIH, Glucosamine and Chondroitin) (NCCIH, Using Supplements Wisely)
What dose of chondroitin was studied?
The GAIT trial gave 1,200 mg of chondroitin sulfate a day for 24 weeks to adults with knee osteoarthritis. A Nervecept capsule lists 50 mg, about 4.2% of that dose. (NIH, GAIT Trial News Release)
Does chondroitin help nerves?
We found no trial of chondroitin in a nerve condition. The research we cite is about knee osteoarthritis, where results are mixed, and no supplement treats neuropathy. (NCCIH, Glucosamine and Chondroitin) (NINDS, Peripheral Neuropathy)
Who wrote this09
Who is behind this Nervecept write-up?
The Nervecept label desk drafted it from the bottle, the sales page and the public sources linked in the text.
Once a clinician has reviewed it, the reviewer's name appears in the box below.
Drafted from the bottle, the sales page and the NIH, FDA, CDC, FTC and journal sources named in the text.
Most recent update: . How we work is set out in the editorial standards and the review rules. This website belongs to a USA authorized Nervecept retailer. It is neither the maker of the capsules nor the distributor named on the label. Purchases made through our order links earn us a commission.
Keep reading
Where should you go next with Nervecept?
Three good next stops are ingredients, supplement facts, side effects.
They build on what you just read and cite their own sources.
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Read the label, the shellfish line and your own medicine list first. Then choose a pack: the bigger ones cost less per bottle and ship free inside the US, and the 60-day refund clock starts on the purchase date.
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