The 4-type Collagen Chews reviewed here are no longer listed. Natural Dog Company now sells a single-ingredient Collagen Stick chew instead. Verified 26 August 2026. Ingredient details below describe the discontinued product.
Natural Dog Company no longer sells this 4-type collagen chew. When we re-checked on 26 August 2026, the only collagen product in its catalogue was the Collagen Stick — a single-ingredient, free-range grass-fed beef collagen chew at about $6 a stick, with no artificial colours, scents, preservatives or flavours. That is a good clean chew, but it carries no stated milligram dose, so you cannot target a joint or skin amount with it. The label breakdown below is kept as a record of the discontinued formulated chew.
What the current label lists
| Active | Detail |
|---|---|
| Bovine collagen | Types I & III (hydrolyzed) |
| Marine collagen | Type I |
| Eggshell membrane | Types I, V, X |
| Vitamin C + hyaluronic acid | Included |
Strengths
- Genuine 4-type collagen blend plus eggshell membrane
- Vitamin C supports the dog’s own collagen synthesis
- Hyaluronic acid for joint lubrication
- Palatable chew; competitive price
Limitations
- Chew format = less precise dosing, lower absorption than a liquid
- Contains marine, bovine and turkey — check allergies
- No studied UC-II dose
| Active ingredient | Per 2 mL |
|---|---|
| Hydrolyzed collagen peptides (Type I & III) | 462 mg |
| Undenatured type II collagen (UC-II) | 48 mg |
| Micro-emulsified salmon oil (omega-3 EPA/DHA) | ~126 mg |
| Pork bone broth concentrate | ~126 mg |
| MSM (methylsulfonylmethane) | ~63 mg |
| L-glutamine | ~52 mg |
| Tyndallized S. boulardii postbiotic | ~21 mg |
| Low-molecular-weight hyaluronic acid | ~8.4 mg |
| Vitamin C (sodium ascorbate) | ~4.2 mg |
| Ginger root extract | ~4.2 mg |
| Natural astaxanthin | ~0.5 mg |
Manufacturer-published formulation, current as of July 2026, per 2 mL daily serving. Ingredient amounts describe the contents; the individual actives have published evidence (below), but this exact multi-active blend has not been tested as a finished product in a controlled canine trial. Introduce gradually and check with your vet if your dog has kidney disease or a protein-restricted diet.
Frequently asked questions
Are Natural Dog Company Collagen Chews good?
What collagen types are in Natural Dog Company chews?
Do these chews have UC-II?
Sources
- Gupta RC, Canerdy TD, Lindley J, et al. Comparative therapeutic efficacy and safety of type-II collagen (UC-II), glucosamine and chondroitin in arthritic dogs: pain evaluation by ground force plate. Journal of Animal Physiology and Animal Nutrition. 2012;96(5):770–777. doi:10.1111/j.1439-0396.2011.01166.x
- Dobenecker B, Böswald LF, Reese S, et al. The oral intake of specific bioactive collagen peptides improves gait and quality of life in canine osteoarthritis patients. PLoS One. 2024;19(9):e0308378. doi:10.1371/journal.pone.0308378