What Foods Are High in Glucosamine?

Updated July 2026

Glucosamine is one of the most searched-for joint health ingredients in the UK, but it's also one of the most misunderstood. Very few everyday foods contain meaningful amounts of it, and the parts that do are mostly the bits we don't eat. This guide walks through exactly where glucosamine comes from, which foods genuinely contribute to it, and what the current thinking is on getting it through diet versus a supplement.

What is glucosamine?

Glucosamine is a compound the body produces naturally. It's a building block used in cartilage, tendons, ligaments and the fluid that surrounds your joints, all tissues that rely on a constant turnover of raw materials to stay in good condition. Production of glucosamine in the body tends to slow down with age, which is part of why interest in dietary and supplement sources increases as people get older.

Quick answer: which foods are high in glucosamine?

Honestly, not many. Glucosamine occurs naturally in very few foods, and the amounts you'd get from diet alone are small and inconsistent compared with a measured supplement dose. The main dietary sources are:

• Shellfish shells and exoskeletons (prawns, crab, lobster), not the flesh most of us actually eat
• Bone broth, made by simmering animal bones for an extended period
• Cartilaginous cuts of meat, such as oxtail, chicken feet and pig trotters

There are no known plant foods that naturally contain glucosamine. Any "glucosamine" you see in vegetarian or vegan supplements is produced a different way, which we cover below.

Is glucosamine found in any food?

Yes, but with an important caveat: the foods richest in glucosamine are mainly shellfish, and specifically their shells rather than the parts we typically cook and eat. This is also why most glucosamine supplements are manufactured from harvested shellfish shells that are processed and refined, rather than from something you could simply eat more of at dinner.

The glucosamine in shellfish is bound up in chitin, the tough material that makes up the shell or exoskeleton, which typically accounts for 15 to 40% of a crustacean shell's dry weight. It sits in the shell of a prawn, crab or lobster, not the meat we actually eat, and it's chemically bound rather than free, which is why it can't simply be digested and absorbed by eating shell fragments. It has to be chemically extracted and processed to produce the glucosamine used in supplements.

The same "it's in the connective tissue, not the meat" rule applies to cartilaginous cuts like chicken feet, oxtail and pig trotters: the glucosamine is concentrated in the cartilage itself rather than the surrounding muscle meat. One commonly cited estimate is that a chicken foot is roughly 30% cartilage, and that cartilage is roughly 5% glucosamine, working out to around 450mg of glucosamine per foot. Worth noting that this figure comes from raw-feeding and pet-nutrition sources rather than a peer-reviewed lab analysis, so it's a reasonable estimate rather than a verified figure.

This also means glucosamine-rich foods are naturally limited for anyone following a vegan or vegetarian diet, or anyone with a shellfish allergy. If that applies to you, glucosamine hydrochloride (explained below) is generally the more suitable option, since it isn't derived from shellfish.

If you're considering a new supplement, it's worth checking the ingredients label carefully and, ideally, speaking to a pharmacist, GP or dietitian, particularly if you take other medication or have any allergies.

The three main types of glucosamine

You'll typically see glucosamine sold in one of three forms. They aren't interchangeable, and it's worth knowing the difference before you buy.

Glucosamine sulfate

This is the natural form found in and around joint cartilage and fluid. It's the form used in most of the clinical research into glucosamine and joint comfort, though it's worth knowing that current UK clinical guidance (from NICE) does not recommend glucosamine as a routine treatment for osteoarthritis, a point we cover in more detail further down.

Glucosamine hydrochloride

A lab-produced form of glucosamine, often used as the vegetarian-friendly alternative since it isn't always derived from shellfish. It's also generally the preferred option for anyone with a shellfish allergy, though it's still worth checking the specific product's sourcing.

N-acetyl glucosamine

A less common and less studied form compared with glucosamine sulfate and hydrochloride. Some early research has looked at N-acetyl glucosamine in the context of digestive health, including inflammatory bowel conditions, but this remains an area of ongoing study rather than an established, proven use, and it should not be treated as a treatment for any diagnosed condition without medical supervision.

What food is good for joint comfort?

While few foods contain glucosamine itself, a number of foods are recognised sources of nutrients that play a role in normal joint, bone and connective tissue function. These include:

• Oily fish, such as salmon (a source of omega-3 fatty acids)
• Citrus fruits, red peppers and kale (sources of vitamin C, which contributes to normal collagen formation for the normal function of cartilage)
• Porridge oats (a source of fibre and various micronutrients)
• Walnuts (a source of omega-3 fatty acids)
• Cherries and turmeric, which are popular in general healthy-eating guidance, though the evidence for a specific effect on joints is less established than for the nutrients above

A varied, balanced diet that includes these foods, alongside foods that support normal vitamin D and calcium intake, contributes to general bone and joint health as part of an overall healthy lifestyle. This is different from saying any single food or ingredient will reduce joint pain or treat a joint condition.

Does chicken broth or bone broth contain glucosamine?

Bone broth is made by simmering animal bones, often with connective tissue attached, over a long period, sometimes 12 to 24 hours. This slow process does extract some collagen, cartilage components and trace amounts of glucosamine into the liquid.

The amount you get depends heavily on which bones go into the pot. Since the glucosamine comes from cartilage and connective tissue rather than the bone itself, broth made with joints, feet or knuckle bones (which carry more cartilage) will generally yield more than broth made from plain, meaty bones. Adding a splash of vinegar to the water is a common tip for helping break down that cartilage and connective tissue during the simmer.

However, it's worth being realistic about the amounts involved: the glucosamine content of a homemade broth is small and highly variable, depending on the bones used, the cooking time and the recipe, and it isn't comparable to the measured, consistent dose you'd get from a supplement. Bone broth can be a tasty, nourishing part of a varied diet, but it shouldn't be relied on as a therapeutic source of glucosamine.

What plants contain glucosamine?

None, naturally. There are no plant foods that contain glucosamine. What you will find labelled as a "vegetarian" or "plant-derived" glucosamine source is glucosamine hydrochloride produced through fermentation of a fungus, Aspergillus niger, which is a mould you may have encountered as a natural spoilage organism on foods like onions, grapes and apricots. In a supplement context it's grown and fermented under controlled laboratory conditions to produce the glucosamine hydrochloride used in vegan and vegetarian products, rather than being extracted directly from any actual plant.

What can replace glucosamine? Chondroitin explained

Chondroitin is another naturally occurring compound, closely associated with glucosamine in joint health supplements and often sold alongside it. It's derived from cartilage, typically sourced from animals such as cows, pigs or sharks, which again makes standard chondroitin unsuitable for a vegan or vegetarian diet. Some manufacturers do produce vegetarian-friendly versions using alternative production methods, so it's worth checking the label if this matters to you.

As with glucosamine, if you're trying to decide between products or forms, a pharmacist, GP or registered nutritionist is best placed to advise on what's appropriate for your individual circumstances.

Why don't doctors always recommend glucosamine?

This is a fair and increasingly common question, so it deserves an honest answer. Current UK clinical guidance from the National Institute for Health and Care Excellence (NICE) does not recommend glucosamine as a routine treatment for osteoarthritis, largely because the overall evidence from large clinical trials has been mixed. This doesn't mean nobody finds it helpful, individual response varies, but it does mean glucosamine shouldn't be presented as a proven medical treatment for any joint condition.

If you have persistent joint pain, swelling, or a diagnosed condition such as osteoarthritis or rheumatoid arthritis, the right first step is a conversation with your GP, rather than self-treating with a supplement.

Who should be cautious with glucosamine?

• Shellfish allergy: most glucosamine supplements are derived from shellfish shells, so check the label carefully or opt for a stated vegetarian source
• Blood-thinning medication: glucosamine may interact with anticoagulants such as warfarin, so speak to your GP or pharmacist before starting a supplement if this applies to you
• Pregnancy and breastfeeding: as with any supplement, check with a healthcare professional first
• Diabetes: there has been some historical concern about glucosamine and blood sugar control, so it's worth discussing with your GP or diabetes team before starting

Frequently asked questions

What foods have the most glucosamine?
Shellfish shells and exoskeletons contain the highest natural concentrations, followed by bone broth and cartilaginous cuts of meat like oxtail and chicken feet. None of these provide amounts close to a standard supplement dose.

Is turmeric better than glucosamine?
They're different things entirely, turmeric is a spice containing curcumin, while glucosamine is a naturally occurring building block of cartilage, so it isn't a fair like-for-like comparison. Some people use them alongside each other as part of a varied diet, but neither should be treated as a proven treatment for a joint condition without discussing it with a healthcare professional.

What can I eat to support my joints?
A varied diet that includes oily fish, vitamin C-rich fruit and vegetables, wholegrains and a good balance of protein supports general bone, cartilage and connective tissue health. This is about overall dietary pattern rather than any single "miracle" food.

Why don't doctors recommend glucosamine?
Current NICE guidance doesn't recommend it as a routine treatment for osteoarthritis in the UK, largely due to mixed results across large clinical trials. It's best discussed with your GP if you're considering it for a specific joint condition.

What shouldn't be mixed with glucosamine?
Glucosamine may interact with blood-thinning medication such as warfarin, and anyone with a shellfish allergy should check the source of their supplement carefully. Always check with a pharmacist or GP if you take other medication.

Can vegans or vegetarians get glucosamine?
Not from food, since no plant naturally contains it. Glucosamine hydrochloride made via fermentation of Aspergillus niger is the usual vegetarian and vegan-friendly supplement option, so check the label for this if it matters to you.

A quick note on this article

This guide is intended for general information and does not constitute medical advice or a health claim for any specific food or product. If you have joint pain, a diagnosed joint condition, or questions about whether a supplement is right for you, please speak to your GP, pharmacist or a registered dietitian.

---

Want to know more about joint health nutrients? Browse the rest of our Health Insiders blog, or drop us a message on Instagram.