Dr. Axe Wire · Study decoded · health

Danshen Extract Protects Cartilage In Animal Osteoarthritis Models, Review Finds

A pooled analysis of 22 animal studies found this traditional Chinese herb reduced cartilage damage markers linked to osteoarthritis progression.

By Dr. Axe Editorial Team · October 22, 2026 · 1 source · Watch

A systematic review and meta-analysis published October 14, 2026 in the Journal of Ethnopharmacology found Salvia miltiorrhiza (Danshen) interventions reduced cartilage damage in animal osteoarthritis models.

22animal studies

456animals total

Researchers pooled 22 controlled animal studies, 456 animals total, that tested Danshen or its compounds in osteoarthritis models. The two cartilage-damage scores fell: OARSI by a standardized mean difference of -4.20 and Mankin by -6.50, both large effects, though results varied a lot between studies. Serum IL-1β, serum IL-6, cartilage IL-6 and serum TNF-α (inflammation signals) dropped; the drop in cartilage TNF-α was not significant. Treated animals had more Aggrecan and Collagen II (cartilage matrix proteins), more Bcl-2 and less caspase-3 (cell-death markers), and lower cartilage MDA, an oxidative-damage marker.

The authors say inflammation, cartilage matrix turnover, cartilage cell death and oxidative stress may be involved in the protection. Chinese medicine has long used Danshen for pain and for what it calls blood stasis, and earlier work found its extracts anti-inflammatory and antioxidant.

Cartilage damage scores lower with Danshen-derived interventions in animal OA models

Journal of Ethnopharmacology, 2026, Wan et al.

Every study was in animals. Results varied widely, samples were small, key methods were often incompletely reported, and the funnel plot was asymmetric, though trim-and-fill did not change the direction of the effect. The authors say better animal studies are needed before testing in people.

Dr. Axe’s Take

I like seeing an herb with a long track record in Chinese medicine hold up across 22 animal studies. Danshen lowered both cartilage-damage scores and calmed several inflammation and oxidative-stress markers, which is the pattern you want in a joint that is wearing down. It's still animal data with wide variation, so I'd treat it as a lead, not a proven osteoarthritis treatment. If you're working on your joints, the basics come first: an anti-inflammatory diet, a healthy weight and daily movement, with Danshen as one herb worth asking a practitioner trained in Chinese medicine about.

— Dr. Axe

Take the Cellular Health Quiz →

Study summary

Who: 22 controlled animal studies, 456 animals total, osteoarthritis models
Design: Preclinical systematic review and meta-analysis, databases searched inception to March 2026
Dose: Not reported (varied Salvia miltiorrhiza-derived interventions and constituents across studies)
Primary result: OARSI score down (SMD -4.20); Mankin score down (SMD -6.50)
Secondary: Serum IL-1β, serum IL-6, cartilage IL-6 and serum TNF-α reduced (cartilage TNF-α not significant); Aggrecan and Collagen II increased; cartilage MDA reduced
Funding / conflicts: No funder listed in the journal or PubMed record. Conflict statement in the PubMed record: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Date: Oct 14, 2026