In the joint health aisle, the glucosamine and chondroitin duo still dominates the labels. Yet the largest trial ever run on these two actives, with 1,583 patients followed for six months, showed no overall effect beyond placebo. That does not disqualify them. What it shows, above all, is that the choice of ingredient deserves to be made case by case, depending on your formula.
There is no single best joint ingredient in absolute terms. The right choice depends on three things: the daily dose your format can actually hold, the level of evidence you want to put behind your sales case, and the constraints of your target market (allergens, animal origin, positioning). On these three criteria, eggshell membrane has an advantage the others rarely have: clinical trials have tested it at 300 to 500 mg per day, a dose that fits in a single capsule.
Here is what the studies say about the five families of ingredients most often found in joint formulas, and how to choose according to your project.
What are joint ingredients worth, based on the evidence?
Glucosamine and chondroitin: the best known, the most debated
The GAIT trial, published in the New England Journal of Medicine, compared 1,500 mg of glucosamine, 1,200 mg of chondroitin, their combination, an anti-inflammatory drug and a placebo in 1,583 people with knee osteoarthritis. Across all participants, neither glucosamine, nor chondroitin, nor their combination did significantly better than placebo. Only one subgroup, patients with moderate to severe pain, showed a clearly superior response with the combination (Clegg et al., 2006).
For a brand, two practical constraints come on top. Glucosamine is mostly extracted from crustacean shells, one of the 14 allergens that must be declared, even though fermentation-derived versions exist. And the doses studied add up to 2.7 g per day for the duo: that means several large tablets a day, or a powder.
Hydrolyzed collagen and undenatured type II collagen: two different logics
All collagens are often lumped into the same box. That is a mistake. Hydrolyzed collagen (bovine, porcine or marine collagen peptides) is taken in grams: in the Penn State trial on 147 athletes, 10 g per day for 24 weeks improved several parameters of activity-related joint pain compared with placebo (Clark et al., 2008). A powder or drink format is a must.
Undenatured type II collagen, derived from chicken sternum, works the other way around, at a very small dose: 40 mg per day. In a 180-day trial on 191 volunteers, it did better than placebo and better than the glucosamine and chondroitin combination on the WOMAC index (Lugo et al., 2016). It is a serious active, but a single molecule: it brings no hyaluronic acid, no elastin, no glycosaminoglycans.
MSM: a powder ingredient with still limited data
Methylsulfonylmethane is generally produced by synthesis. The most cited trial covers 50 people, at 6 g per day for 12 weeks: improvement in pain and function, but not in stiffness. The authors themselves present it as a pilot trial whose results need confirmation (Kim et al., 2006). At 6 g per day, MSM remains a powder ingredient.
Eggshell membrane: the all-in-one matrix
Eggshell membrane is the thin film that lines the inside of the shell. What sets it apart: it naturally contains, within a single matrix, collagen, elastin, hyaluronic acid, glucosamine and chondroitin. In other words, the actives that are usually bought separately.
On the evidence side, a meta-analysis published in 2024 identified seven randomized placebo-controlled trials in people with knee osteoarthritis, five of which could be pooled. It concludes to a significant improvement in the total WOMAC score and in the pain subscale, while calling for larger trials (García-Muñoz et al., 2024). A few trials, each conducted on a different eggshell membrane:
- Eggshell membrane, 500 mg per day, 67 patients, 8 weeks: significant reduction in pain and stiffness compared with placebo at 10, 30 and 60 days, with -15.9% on pain as early as day 10. Function and overall score were not significant (Ruff et al., 2009).
- Eggshell membrane, 500 mg per day, 60 active postmenopausal women, 2 weeks: 17.2% decrease in CTX-II, a marker of cartilage degradation, compared with placebo from the first week (Ruff et al., 2018).
- Minimally processed native membrane, 300 mg per day, 150 participants, 12 weeks: the primary endpoint (numeric pain rating scale) did not separate the groups, but the KOOS pain and activities of daily living scores improved from the first week (Kiers and Bult, 2020).
- Water-soluble hydrolyzed eggshell membrane, 450 mg per day, 88 adults, 12 weeks: gains in walking and stiffness in the normalized analysis, with no significant difference in the raw analysis (Hewlings et al., 2019).
Let's be honest: eggshell membrane does not have thirty years of track record like glucosamine, and its trials remain modest in size. But they converge, they are placebo-controlled, and those cited here were all run at doses that fit in a single capsule.
The comparison at a glance
| Ingredient | Daily dose studied | Realistic formats | Origin and allergens | What the trials say |
|---|---|---|---|---|
| Glucosamine | 1,500 mg | Multiple tablets, powder | Crustaceans (allergen) or fermentation | Mixed overall results (GAIT) |
| Chondroitin | 1,200 mg | Multiple tablets, powder | Bovine, porcine, poultry or fish cartilage | Mixed overall results (GAIT) |
| Hydrolyzed collagen | 10 g | Powder, drink, stick pack | Bovine, porcine or marine (fish: allergen) | Effects on activity-related pain in athletes |
| Undenatured type II collagen | 40 mg | Capsule, tablet | Chicken sternum | Favorable 180-day trial |
| MSM | 6 g | Powder | Synthetic | Pilot trials, to be confirmed |
| Eggshell membrane (including Reggenerate®, native eggshell membrane) | 300 to 500 mg | Single capsule, tablet, gummy, powder, bar | Egg (allergen) | 7 randomized trials, favorable 2024 meta-analysis |
Which ingredient to choose for your format?
It is often the dosage form that decides, well before marketing. A joint formula lives or dies on compliance: a product taken every day for three months is a product that is easy to take.
Gummies, small capsule, one dose a day. Frankly, we advise against starting with the glucosamine and chondroitin duo: at 2.7 g per day, you will not fit the studied doses into a gummy, and you risk a formula that is underdosed compared with the studies. Low-dose actives, such as eggshell membrane or undenatured type II collagen, are made for these formats.
Powder, drink, sports nutrition. Here, hydrolyzed collagen remains a solid choice, especially if your target consumer already knows the word “collagen”. Adding 300 mg of eggshell membrane to a collagen stick pack enriches the formula with hyaluronic acid, elastin and glycosaminoglycans without weighing down the format.
Premium formula for pharmacy. Buyers there look at the ingredient list and the level of evidence. A matrix that brings five actives under a single ingredient name shortens the label and simplifies the conversation at the pharmacy counter.
Fish-free, shellfish-free or ovo-vegetarian range. Crustacean glucosamine and marine collagen are out from the start. Eggshell membrane remains compatible, with a single allergen to declare: egg.
What your label will be able to say
This is the point many brands discover late. In Europe, none of the ingredients in this comparison has an authorized joint health claim. EFSA issued negative opinions for glucosamine, alone or with chondroitin, as early as 2009, then for hydrolyzed collagen in 2011. Eggshell membrane has no claim of its own either.
In practice, brands build their on-pack message around nutrients whose claims are authorized under Regulation (EC) No 1924/2006. Two common examples in joint health: vitamin C, which contributes to normal collagen formation for the normal function of cartilage, and manganese, which contributes to the normal formation of connective tissue. The functional ingredient, for its part, carries the differentiation, the story and the scientific case aimed at professionals. Always check the exact wording in the EU register of claims before printing.
Why we chose native membrane at 300 mg
At Circul'Egg, we chose to keep the membrane in its native, non-hydrolyzed form. It is separated from the shell by a 100% mechanical, solvent-free process, which preserves the matrix as nature built it: type I, V and X collagen, elastin, hyaluronic acid, glucosamine and chondroitin. And we recommend it at 300 mg per day, the dose used in the trial on minimally processed native membrane cited above. One useful clarification: these trials were run on other eggshell membranes, not on Reggenerate®.
Reggenerate®, native eggshell membrane, is developed by Circul'Egg, in Janzé, Brittany, from upcycled eggshells, and fits into every format: capsules, tablets, gummies, powders, bars. If you want to go further on the category, our eggshell membrane guide for formulators details its composition. And if you are looking for a formula that is ready to launch, our ready-to-market range starts from this same base.
Every ingredient in this comparison has its place in a joint health range. The right choice is the one that holds the studied dose in the format your consumer will actually take, with evidence you can present clearly to your buyers.
Frequently asked questions
Can eggshell membrane and glucosamine be combined in the same formula?
Yes, nothing technically prevents it. The real question is dose: if your format does not allow you to reach the 1,500 mg of glucosamine studied, you are better off betting on an ingredient that is effective at a low dose rather than adding underdosed glucosamine for the sake of the ingredient list.
Is eggshell membrane suitable for vegetarians?
It is suitable for ovo-vegetarians, since it comes from the egg. It is not suitable for a vegan formula. It is often a good compromise for brands that want to move away from bovine or marine collagen.
What claim can go on a joint supplement based on eggshell membrane?
Eggshell membrane has no authorized health claim in Europe. Brands generally pair it with a nutrient whose claim is authorized, such as vitamin C for the normal function of cartilage or manganese for connective tissue, following the exact wording of the EU register.
How long do the trials take to measure an effect?
In the randomized trial published in 2009 at 500 mg per day, the first differences from placebo on pain and stiffness were measured as early as 10 days. In the trial on native membrane at 300 mg, the KOOS scores moved from the first week. These results apply to the products tested and to specific populations.
Native or hydrolyzed membrane: what is the difference?
Native membrane retains its original structure, with all of its proteins and glycosaminoglycans. The hydrolyzed version is broken down into smaller fragments, often to make it water-soluble. Both have been studied, at comparable doses, and the choice depends mostly on your format and your specifications.