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What Is Arnica? The Plant, the Tradition, and the Patch

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Learn about the XL cut-to-fit arnica patch, compare pack options, and read the directions before use.

Published: July 13, 2026Arnica montana is a yellow, daisy-like flower that grows in mountain meadows in parts of Europe. It belongs to the Asteraceae (daisy) family, and for centuries people have used preparations made from it on the skin after bumps, bruises and sore muscles.Traditional use is not the same as proofThat long history is real, but a tradition of use does not show that a product works. When researchers test arnica products in controlled trials, the results are mixed, and they depend on the kind of preparation, the condition and how it was measured.Herbal and homeopathic arnica are different productsMany creams and gels contain arnica extract or tincture at a stated strength, such as a percentage. Homeopathic arnica is made differently: the plant is prepared and repeatedly diluted according to the Homeopathic Pharmacopoeia of the United States, and its strength is written as a potency expressed as a dilution rather than a percentage. Homeopathic products are labeled differently, and their claims rest on traditional homeopathic practice rather than accepted medical evidence.The two types have also been studied separately, so the results of one should not be applied to the other.What research on arnica has found

In a double-blind, placebo-controlled trial of 20 well-trained men who ran downhill to induce muscle soreness, the group using a topical arnica preparation reported less pain (on muscle tenderness and a visual analogue scale) 72 hours later. Performance measures and blood markers of muscle damage and inflammation did not differ (Pumpa et al., 2014).

In a randomized, double-blind, placebo-controlled trial of 53 people who did calf raises, legs treated with an arnica cream reported higher pain than placebo-treated legs 24 hours later (3.04 vs 2.36 on a pain scale). Differences at days 3 and 4, muscle tenderness and ankle range of motion were not significant (Adkison et al., 2010).

A randomized, double-blind trial of 204 people with hand osteoarthritis compared an arnica gel with a 5% ibuprofen gel for 21 days and found no difference in pain or hand function between the two (Widrig et al., 2007).

A 1998 systematic review of eight placebo-controlled trials of homeopathic arnica found that most had serious methodological flaws and concluded that the claim that homeopathic arnica works beyond a placebo effect is not supported by rigorous clinical trials (Ernst and Pittler, 1998).

These studies tested other arnica preparations. Their findings do not establish the effectiveness of ArnicaPatch. The current label lists targeted relief of swelling and pain associated with joint sprains, muscle strains, shin splints, dislocations, overuse injuries, and bruising.What the ArnicaPatch label saysArnicaPatch is a topical analgesic patch with Arnica Montana 50M HPUS; Hypericum Perforatum 50M HPUS; Ledum Palustre 50M HPUS; Rhus Toxicodendron 50M HPUS; Ruta Graveolens 50M HPUS. For the targeted relief of swelling and pain associated with joint sprains, muscle strains, shin splints, dislocations, overuse injuries, and bruising.To see where these products are sold, visit the product page, and read the FAQ before you buy.Read the current pouch label for complete ingredients, directions, and safety information before use.References

Pumpa KL, Fallon KE, Bensoussan A, Papalia S. The effects of topical Arnica on performance, pain and muscle damage after intense eccentric exercise. European Journal of Sport Science. 2014. PubMed 23947690

Adkison JD, Bauer DW, Chang T. The effect of topical arnica on muscle pain. Annals of Pharmacotherapy. 2010. PubMed 20807867

Widrig R, Suter A, Saller R, Melzer J. Choosing between NSAID and arnica for topical treatment of hand osteoarthritis in a randomised, double-blind study. Rheumatology International. 2007. PubMed 17318618

Ernst E, Pittler MH. Efficacy of homeopathic arnica: a systematic review of placebo-controlled clinical trials. Archives of Surgery. 1998. PubMed 9820349

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