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Scientific Name(s): Arnica chamissonis subsp. foliosa (Nutt.) Maguire, Arnica cordifolia Hook., Arnica fulgens Pursh., Arnica montana L., Arnica sororia Greene
Common Name(s): Arnica flos, Leopard's bane, Mountain snuff, Mountain tobacco, Sneezewort

Medically reviewed by Last updated on May 8, 2023.

Clinical Overview


Arnica and its extracts have been widely used in folk and homeopathic medicine as a treatment for acne, boils, bruises, rashes, sprains, pains, and wounds. There does not appear to be sufficient evidence to support the use of arnica as an anti-inflammatory or analgesic agent or in the prevention of bruising. Heterogeneity of doses, delivery forms, and indications in available clinical studies also makes generalization difficult.


Arnica is classified as an unsafe herb by the US Food and Drug Administration (FDA) because of its toxicity and should not be administered orally or applied to broken skin where absorption can occur. No consensus exists on topical dosing, and evidence from clinical trials is lacking to support therapeutic dosing. In homeopathic use, less concentrated strengths, such as 12C, 200C, 1M (1,000C), and 10M (10,000C) (C = centisimal dilution [1 part in 100]; M = millesimal dilution [1 part in 1,000]), are recommended for use before and after surgery.


Contraindications have not been identified.


Avoid use. Uterine stimulation has been documented.


None well documented.

Adverse Reactions

Homeopathic doses of arnica are unlikely to result in any adverse reactions because of the small amount ingested. Arnica irritates mucous membranes and causes stomach pain, diarrhea, and vomiting. Allergy and contact dermatitis have been reported.


The plant is poisonous and ingestion can cause gastroenteritis, dyspnea, cardiac arrest, and death. The flowers and roots of the plant have caused vomiting, drowsiness, and coma when eaten by children.

Scientific Family

  • Asteraceae (daisy)


Arnica, a perennial native to the mountainous regions of Europe and southern Russia, grows from 0.3 to 0.6 m tall. Oval-shaped, opposite leaves form a basal rosette at the soil surface. Arnica has bright yellow, daisy-like flowers that, when dried, are the primary parts used medicinally. Roots and rhizomes may also be utilized. Arnica is sometimes called wolf's bane; however, this name more commonly refers to the unrelated plant monkshood (Aconitum spp.). Lychnophora ericoides is known as false arnica or arnica-da-serra.1, 2, 3


Internal and external preparations made from the flowering heads of arnica have been used medicinally for hundreds of years. Arnica was used extensively in European folk medicine, and alcoholic tinctures were produced by early North American settlers to treat sore throats, as a febrifuge, and to improve circulation. Homeopathic uses include the treatment of surgical or accidental trauma, use as an analgesic, and the treatment of postoperative thrombophlebitis and pulmonary emboli. Arnica has been applied externally to acne, bruises, sprains, and muscle aches. In addition, it has been used as a general topical counterirritant and a CNS stimulant, as well as an antibacterial for abrasions and gunshot wounds. Arnica is also an ingredient in hair tonics, dandruff treatments, perfumes, and cosmetics. A. montana and A. chamissonis subsp. foliosa have been approved for external use in the Complete German Commission E Monographs.2, 4, 5 However, arnica is classified by the FDA as an unsafe herb.


A number of flavonoid glycosides have been identified in arnica. Flavonoids (0.4% to 0.6%) include betuletol, eupafolin, flavonol glucuronides, hispidulin, isorhamnetin, luteolin, patuletin, spinacetin, tricin, 3,5,7,-trihydroxy-6,3′,4′-trimethoxyflavone, kaempferol, quercetin, kaempferol and quercetin derivative, jaceosidin, and pectolin-arigenin. Isomeric alcohols include arnidiol and foradiol. Terpenoids in arnica include arnifolin, arnicolide, and the sesquiterpenes helenalin (and derivatives) and dihydrohelenalin. The pseudoguaianolide ester helenalin methacrylate has been isolated from the flowers. The quantity of sesquiterpene lactones varies widely among species and geographical locations, making standardization of preparations difficult. The European Pharmacopoeia recommends a minimum sesquiterpene lactone content of 0.4% in A. montana preparations used as herbal medicines.6

Amines in the plant are betaine, choline, and trimethylamine. Coumarins include scopoletin and umbelliferone. Carbohydrates, such as mucilage and polysaccharides (eg, inulin), are found in arnica. Two homogeneous polysaccharides, an acidic arabino-3,6-galactan-protein, and a neutral fucogalactoxyloglucan have been isolated. Further polysaccharide isolation has been performed on a group of water-soluble acidic heteroglycans. Volatile oils (0.3% to 1%) may be obtained from rhizomes and roots or from flower parts and are used in perfume. Constituents in the oil include thymol, its derivatives, and fatty acids (eg, palmitic, linoleic, myristic, linolenic). The fatty acid content in arnica leaf essential oil has been evaluated as well. Other components found in arnica include the bitter compound arnicin, caffeic acid, carotenoids (alpha- and beta-carotene, cryptoxanthin, lutein), phytosterols, resin, tannins, lignans, and anthoxanthine.7, 8, 9, 10, 11, 12, 13

Uses and Pharmacology

Controversy exists concerning evaluations of the clinical efficacy of homeopathic arnica. Criticisms of clinical trials include publication bias, sample size, and intention-to-treat analysis. Although topical arnica preparations differ from homeopathic arnica, outcome measures such as pain, inflammation, and coagulation assays have been used as a standard measurement of effect.14, 15, 16 Heterogeneity of doses, delivery forms, and indications in available clinical studies also makes generalization difficult.


Animal data

The sesquiterpene lactones helenalin and 11-alpha, 13-dihydrohelenalin inhibited platelet aggregation by interacting with platelet sulfhydryl groups in vitro.33, 34 Wound healing following topical application of arnica has been studied with limited success in rats.35

Clinical data

A case report of extensive bleeding during orthognathic surgery attributed to previous consumption of arnica exists.36 However, arnica did not affect blood coagulation parameters in a randomized, controlled trial.15, 37, 38

No difference was found between arnica and placebo for laser-induced or surgical bruising,22, 39, 40, 41 despite arnica being widely recommended for this purpose.42, 43 Following rhytidectomy (face-lift), a decrease in bruising was observed on days 1 and 7, but not days 5 and 10.15 Another study in patients with upper eyelid dermatochalais undergoing blepharoplasty found no benefit in size or severity of ecchymosis or ease of recovery with A. montana compared with placebo; results were confirmed by a double-blind, randomized controlled trial44, 64. An open-label study evaluated the use of arnica powder in umbilical cord care. No infections were noted and stump detachment was unaffected; however, the study had no comparator agent.45

Arnica was one of the 3 most common herbs used by certified or licensed midwives for perineal healing and discomfort based on state-wide surveys in California, Texas, and North Carolina.65


Animal data

The availability of clinical trial data makes findings from animal studies less important, although limited studies in rodents show effects of arnica on inflammatory markers.17, 46

Clinical data

Pooled data from 2 trials evaluating muscle soreness and cell damage in marathon runners reached statistical significance for muscle soreness but showed no difference in relevant cellular enzymes.47 A subsequent trial reported no difference for muscle soreness in marathon runners.25 A small (N = 22) study found reductions in pain 3 days after exercise but no effect on markers of muscle damage or inflammation with topically applied arnica.48 In a study of 53 participants, topical arnica increased calf muscle pain at 24 hours after exercise but not at 48 hours.49


Animal data

Animal models show positive and negative anti-inflammatory responses to arnica.17, 18, 19

Clinical data

A systematic review of trials prior to October 1997 found no evidence for arnica in reducing inflammation.20 Additional trials revealed no difference in swelling or wrist circumference compared with placebo following carpal tunnel surgery,21, 22 equivalence (no difference) to diclofenac 50 mg 3 times daily for swelling after foot surgery,23 and no difference in swelling after knee surgery except for cruciate ligament surgery (pooled data from 3 individual trials).24 In 1 study in postrhinoplasty ecchymosis and edema, patients who received arnica had less edema during the early postoperative period compared with controls, suggesting that arnica has a beneficial effect on postrhinoplasty inflammation.25 Overall, there is insufficient evidence to support the use of arnica as an anti-inflammatory agent.8, 15, 20, 26


Animal Data

The availability of clinical trial data makes findings from animal studies less important.

Clinical data

A systematic review of trials prior to October 1997 found no evidence for arnica as an analgesic.20 Studies evaluating the efficacy of arnica gel compared with ibuprofen gel in osteoarthritis suggest equivalence.27, 28 However, methodological weaknesses exist in the studies.26, 29 No difference in pain following knee or foot surgery, tonsillectomy, or surgery for carpal tunnel syndrome has been found between arnica and placebo.21, 22, 23, 30, 31, 32

Other uses

Immune modulation has been observed in animal studies and in vitro.17, 50, 51, 52 Antioxidant effects53, 54 and in vitro cytotoxic effects34, 54, 55, 56 have been reported.

Of 31 complementary and alternative medicine (CAM) remedies, arnica as well as chamomile were the most often recommended remedies for dental issues (64%) made by German dentists and maxillofacial surgeons according to a prospective, cross-sectional survey (N=250). As one might expect, perceived effectiveness was rated higher among CAM proponents than opponents.66


Arnica is classified as an unsafe herb by the FDA because of its toxicity and should not be administered orally or applied to broken skin where absorption can occur.4, 57


A review of practice patterns of facial plastic surgeons found a commonly cited regimen of A. montana 500 mg capsules taken orally every 8 hours on the day of surgery and continued for 3 days.42


No consensus exists on topical dosing, and evidence from clinical trials is lacking to support therapeutic dosing.8, 15, 20 Experiments show that absorption of active chemical constituents is dependent on the concentration and form of preparation. Microemulsion preparations exhibit greater absorption, as do more concentrated forms of the tincture.6, 58 Creams typically contain arnica oil 15% and salves have arnica oil 20% to 25%.8


Clinical evidence is lacking to support therapeutic dosing. Less concentrated strengths, such as 12C, 200C, 1M, and 10M, have been used in surgery. Because paradoxical effects, such as causing bleeding instead of preventing bruising, can be observed, pre- and postoperative homeopathic use of arnica should be limited.57 (C = centesimal dilution; potency is based on the ratio of 1 part substance to 99 parts dilution.) Designated with a C (or left blank in Europe) after the remedy name, C potencies are considered medium potencies. C potency is often used for seasonal problems and chronic conditions. M = millesimal dilution; potency is based on the ratio of 1 part substance to 1,000 parts dilution. Designated with an M after the remedy name, M potencies are considered high potencies. M potency is used by practitioners for constitutional treatment.16, 44

Pregnancy / Lactation

Avoid use. Uterine stimulation has been documented. Arnica was traditionally used as an abortifacient, possibly due to oxytocic action of constituent sesquiterpene lactones.2, 4 Homeopathic arnica is widely used after childbirth to reduce bruising and postpartum bleeding.59, 60


None well documented. The potential for interactions with anticoagulants has been described; however, no evidence of increased bleeding times or changes in coagulation assay tests were observed in healthy volunteers.15, 34, 38, 61

Adverse Reactions

Homeopathic doses of arnica are unlikely to result in any adverse reactions because of the small amount ingested15; however, a case report exists of toxic optic neuropathy following ingestion of homeopathic arnica.62 Oral ingestion of arnica (eg, tincture, flowers, roots, rhizomes) has caused stomach pain, diarrhea, and vomiting and irritates the mucous membranes, although no adverse events have been reported in clinical trials.2, 15, 38 Numerous cases of allergy and contact dermatitis related to arnica have been described; sesquiterpene lactones helenalin, helenalin acetate, and helenalin methacrylate are the primary sources of contact dermatitis. Chemical and animal experimentation found a topical sensitizing effect.2, 17


Arnica is classified as an unsafe herb by the FDA because of its toxicity. Internal use of arnica and its extracts is not recommended because the plant is considered poisonous.2, 4, 15 The cardiotoxicity of the plant's helenolide constituents has been determined in animal studies.61 Gastroenteritis has occurred with high oral dosages, and dyspnea, cardiac arrest, and death may occur.63 The flowers and roots of the plant have caused vomiting, drowsiness, and coma when eaten.2, 4, 15



This information relates to an herbal, vitamin, mineral or other dietary supplement. This product has not been reviewed by the FDA to determine whether it is safe or effective and is not subject to the quality standards and safety information collection standards that are applicable to most prescription drugs. This information should not be used to decide whether or not to take this product. This information does not endorse this product as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this product. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this product. This information is not specific medical advice and does not replace information you receive from your health care provider. You should talk with your health care provider for complete information about the risks and benefits of using this product.

This product may adversely interact with certain health and medical conditions, other prescription and over-the-counter drugs, foods, or other dietary supplements. This product may be unsafe when used before surgery or other medical procedures. It is important to fully inform your doctor about the herbal, vitamins, mineral or any other supplements you are taking before any kind of surgery or medical procedure. With the exception of certain products that are generally recognized as safe in normal quantities, including use of folic acid and prenatal vitamins during pregnancy, this product has not been sufficiently studied to determine whether it is safe to use during pregnancy or nursing or by persons younger than 2 years of age.

1. Arnica montana. USDA, NRCS. 2014. The PLANTS Database (, July 2014). National Plant Data Center, Baton Rouge, LA 70874-4490 USA. Accessed July 27, 2014.
2. Khan IA, Abourashed AE. Leung’s Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics. 3rd ed. Hoboken, NJ: Wiley; 2009.
3. Petinatti Pavarini D, Nogueira EF, Callejon D, et al. Novel bisabolane derivative from "arnica-da-serra" (Vernonieae: Asteraceae) reduces pro-nociceptive cytokines levels in LPS-stimulated rat macrophages. J Ethnopharmacol. 2013;148(3):993-998.23688665
4. Blumenthal M, Goldberg A, Brinckmann J, eds. Herbal Medicine: Expanded Commission E Monographs. Newton, MA: Integrative Medicine Communications; 2000.
5. Duke J, Bogenschutz-Godwin M, du Cellier J, Duke P. Handbook of Medicinal Herbs. 2nd ed. Boca Raton, FL: CRC Press; 2002.
6. Tekko IA, Bonner MC, Bowen RD, Williams AC. Permeation of bioactive constituents from Arnica montana preparations through human skin in-vitro. J Pharm Pharmacol. 2006;58(9):1167-1176.16945174
7. Duke J. Dr. Duke’s phytochemical and ethnobotanical databases. Accessed 2014.
8. Dinman S. Arnica. Plast Surg Nurs. 2007;27(1):52-53.17356456
9. Willuhn G. Fatty acids of the essential oil from leaves of Arnica montana and Arnica longifolia [in German]. Z Naturforsch B. 1972;27(6):728.4403598
10. Tabanca N, Demirci B, Crockett SL, Başer KH, Wedge DE. Chemical composition and antifungal activity of Arnica longifolia, Aster hesperius, and Chrysothamnus nauseosus essential oils. J Agric Food Chem. 2007;55(21):8430-8435.17894463
11. Schmidt TJ, Stausberg S, Raison JV, Berner M, Willuhn G. Lignans from Arnica species. Nat Prod Res. 2006;20(5):443-453.16644542
12. Šutovská M, Capek P, Kočmalová M, et al. Characterization and pharmacodynamic properties of Arnica montana complex. Int J Biol Macromol. 2014;69:214-221.24875316
13. Jaiswal R, Kuhnert N. Identification and characterization of two new derivatives of chlorogenic acids in arnica (Arnica montana L.) flowers by high-performance liquid chromatography/tandem mass spectrometry. J Agric Food Chem. 2011;59(8):4033-4039.21413809
14. Ernst E. The benefits of Arnica: 16 case reports. Homeopathy. 2003;92(4):217-219.14587689
15. Lawrence WT; Plastic Surgery Educational Foundation DATA Committee. Arnica. Plast Reconstr Surg. 2003;112(4):1164-1166.12973238
16. Mayor S. Trial shows that homoeopathic arnica is no better than placebo. BMJ. 2003;326:303.
17. Lass C, Vocanson M, Wagner S, et al. Anti-inflammatory and immune-regulatory mechanisms prevent contact hypersensitivity to Arnica montana L. Exp Dermatol. 2008;17(10):849-857.18341569
18. Macêdo SB, Ferreira LR, Perazzo FF, Carvalho JC. Anti-inflammatory activity of Arnica montana 6cH: preclinical study in animals. Homeopathy. 2004;93(2):84-87.15139092
19. Alfredo PP, Anaruma CA, Pião AC, João SM, Casarotto RA. Effects of phonophoresis with Arnica montana onto acute inflammatory process in rat skeletal muscles: an experimental study. Ultrasonics. 2009;49(4-5):466-471.19152953
20. Ernst E, Pittler MH. Efficacy of homeopathic arnica: a systematic review of placebo-controlled clinical trials. Arch Surg. 1998;133(11):1187-1190.9820349
21. Jeffrey SL, Belcher HJ. Use of Arnica to relieve pain after carpal-tunnel release surgery. Altern Ther Health Med. 2002;8(2):66-68.11892685
22. Stevinson C, Devaraj VS, Fountain-Barber A, Hawkins S, Ernst E. Homeopathic arnica for prevention of pain and bruising: randomized placebo-controlled trial in hand surgery. J R Soc Med. 2003;96(2):60-65.12562974
23. Karow JH, Abt HP, Fröhling M, Ackermann H. Efficacy of Arnica montana D4 for healing of wounds after Hallux valgus surgery compared to diclofenac. J Altern Complement Med. 2008;14(1):17-25.18199022
24. Brinkhaus B, Wilkens JM, Lüdtke R, Hunger J, Witt CM, Willich SN. Homeopathic arnica therapy in patients receiving knee surgery: results of three randomised double-blind trials. Complement Ther Med. 2006;14(4):237-246.17105693
25. Totonchi A, Guyuron B. A randomized, controlled comparison between arnica and steroids in the management of postrhinoplasty ecchymosis and edema. Plast Reconstr Surg. 2007;120(1):271-274.17572575
26. Kouzi SA, Nuzum DS. Arnica for bruising and swelling. Am J Health Syst Pharm. 2007;64(23):2434-2443.18029949
27. 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. Rheumatol Int. 2007;27(6):585-591.18029949
28. Knuesel O, Weber M, Suter A. Arnica montana gel in osteoarthritis of the knee: an open, multicenter clinical trial. Adv Ther. 2002;19(5):209-218.12539881
29. Cameron M, Chrubasik S. Topical herbal therapies for treating osteoarthritis. Cochrane Database Syst Rev. 2013;5:CD010538.23728701
30. Peters S, Page MJ, Coppieters MW, Ross M, Johnston V. Rehabilitation following carpal tunnel release. Cochrane Database Syst Rev. 2013;6:CD004158.23740605
31. Robertson A, Suryanarayanan R, Banerjee A. Homeopathic Arnica montana for post-tonsillectomy analgesia: a randomised placebo control trial. Homeopathy. 2007;96(1):17-21.17227743
32. Barlow T, Downham C, Barlow D. The effect of complementary therapies on post-operative pain control in ambulatory knee surgery: a systematic review. Complement Ther Med. 2013;21(5):529-534.24050592
33. Schröder H, Lösche W, Strobach H, et al. Helenalin and 11 alpha,13-dihydrohelenalin, two constituents from Arnica montana L., inhibit human platelet function via thiol-dependent pathways. Thromb Res. 1990;57(6):839-845.2116680
34. Rywaniak J, Luzak B, Podsedek A, Dudzinska D, Rozalski M, Watala C. Comparison of cytotoxic and anti-platelet activities of polyphenolic extracts from Arnica montana flowers and Juglans regia husks [published online ahead of print March 28, 2014]. Platelets.24679412
35. Castro FC, Magre A, Cherpinski R, et al. Effects of microcurrent application alone or in combination with topical Hypericum perforatum L. and Arnica montana L. on surgically induced wound healing in wistar rats. Homeopathy. 2012;101(3):147-153.22818231
36. Gray S, West LM. Herbal medicines—a cautionary tale. N Z Dent J. 2012;108(2):68-72.22788052
37. Baillargeon L, Drouin J, Desjardins L, Leroux D, Audet D. The effects of Arnica montana on blood coagulation. Randomized controlled trial [in French]. Can Fam Physician. 1993;39:2362-2367.7903572
38. Daane SP. Potential for danger with Arnica montana. Ann Plast Surg. 2001;46(3):349-350.11293536
39. Alonso D, Lazarus MC, Baumann L. Effects of topical arnica gel on post-laser treatment bruises. Dermatol Surg. 2002;28(8):686-688.12174058
40. Seeley BM, Denton AB, Ahn MS, Maas CS. Effect of homeopathic Arnica montana on bruising in face-lifts: results of a randomized, double-blind, placebo-controlled clinical trial. Arch Facial Plast Surg. 2006;8(1):54-59.16415448
41. Ramelet AA, Buchheim G, Lorenz P, Imfeld M. Homeopathic Arnica in postoperative haematomas: a double-blind study. Dermatology. 2000;201(4):347-348.11146347
42. Shadfar S, Deal AM, Jarchow AM, Yang H, Shockley WW. Practice patterns in the perioperative treatment of patients undergoing septorhinoplasty: a survey of facial plastic surgeons. JAMA Facial Plast Surg. 2014;16(2):113-119.24311187
43. Reddy KK, Grossman L, Rogers GS. Common complementary and alternative therapies with potential use in dermatologic surgery: risks and benefits. J Am Acad Dermatol. 2013;68(4):e127-e135.21890235
44. Kotlus BS, Heringer DM, Dryden RM. Evaluation of homeopathic Arnica montana for ecchymosis after upper blepharoplasty: a placebo-controlled, randomized, double-blind study. Ophthal Plast Reconstr Surg. 2010;26(6):395-397.20683279
45. Perrone S, Coppi S, Coviello C, et al. Efficacy of arnica echinacea powder in umbilical cord care in a large cohort study. J Matern Fetal Neonatal Med. 2012;25(7):1111-1113.21923308
46. Kawakami AP, Sato C, Cardoso TN, Bonamin LV. Inflammatory process modulation by homeopathic Arnica montana 6CH: the role of individual variation. Evid Based Complement Alternat Med. 2011;2011:917541.21318109
47. Tveiten D, Bruseth S, Borchgrevink CF, Løhne K. Effect of Arnica D 30 during hard physical exertion. A double-blind randomized trial during the Oslo Marathon 1990 [in Norwegian]. Tidsskr Nor Laegeforen. 1991;111(30):3630-3631.1780819
48. Pumpa KL, Fallon KE, Bensoussan A, Papalia S. The effects of topical arnica on performance, pain and muscle damage after intense eccentric exercise. Eur J Sport Sci. 2014;14(3):294-300.23947690
49. Adkison JD, Bauer DW, Chang T. The effect of topical arnica on muscle pain. Ann Pharmacother. 2010;44(10):1579-1584.20807867
50. Knaus U, Wagner H. Effect of various polysaccharides on the complement system. Planta Med. 1988;54(6):565.17265351
51. Wagner H, Proksch A, Riess-Maurer I, et al. Immunostimulating action of polysaccharides (heteroglycans) from higher plants [in German]. Arzneimittelforschung. 1985;35(7):1069-1075.4052142
52. Puhlmann J, Wagner H. Immunologically active polysaccharides from Arnica montana herbs and tissue cultures. Planta Med. 1989;55:99.
53. de Camargo RA, da Costa ED, Catisti R. Effect of the oral administration homeopathic Arnica montana on mitochondrial oxidative stress. Homeopathy. 2013;102(1):49-53.23290879
54. Craciunescu O, Constantin D, Gaspar A, Toma L, Utoiu E, Moldovan L. Evaluation of antioxidant and cytoprotective activities of Arnica montana L. and Artemisia absinthium L. ethanolic extracts. Chem Cent J. 2012;6(1):97.22958433
55. Ghasemali S, Nejati-Koshki K, Tafsiri E, et al. Inhibitory effects of β-cyclodextrin-helenalin complexes on H-TERT gene expression in the T47D breast cancer cell line - results of real time quantitative PCR. Asian Pac J Cancer Prev. 2013;14(11):6949-6953.24377631
56. Das S, Saha SK, De A, Das D, Khuda-Bukhsh AR. Potential of the homeopathic remedy, Arnica montana 30C, to reduce DNA damage in Escherichia coli exposed to ultraviolet irradiation through up-regulation of nucleotide excision repair genes. Zhong Xi Yi Jie He Xue Bao. 2012;10(3):337-346.22409925
57. Riley D. Arnica montana and homeopathic dosing guidelines. Plast Reconstr Surg. 2003;112(2):693.12900640
58. Bergamante V, Ceschel GC, Marazzita S, Ronchi C, Fini A. Effect of vehicles on topical application of aloe vera and Arnica montana components. Drug Deliv. 2007;14(7):427-432.17994359
59. Bishop JL, Northstone K, Green JR, Thompson EA. The use of complementary and alternative medicine in pregnancy: data from the Avon Longitudinal Study of Parents and Children (ALSPAC). Complement Ther Med. 2011;19(6):303-310.22036522
60. Katz T. The management of pregnancy and labour with homoeopathy. Complement Ther Nurs Midwifery. 1995;1(6):159-164.9456732
61. Vogel JH, Bolling SF, Costello RB, et al; American College Of Cardiology Foundation Task Force On Clinical Expert Consensus Documents (Writing Committee To Develop An Expert Consensus Document On Complementary And Integrative Medicine). Integrating complementary medicine into cardiovascular medicine. A report of the American College of Cardiology Foundation Task Force on Clinical Expert Consensus Documents (Writing Committee to Develop an Expert Consensus Document on Complementary and Integrative Medicine). J Am Coll Cardiol. 2005;46(1):184-221.15992662
62. Venkatramani DV, Goel S, Ratra V, Gandhi RA. Toxic optic neuropathy following ingestion of homeopathic medication Arnica-30. Cutan Ocul Toxicol. 2013;32(1):95-97.22877081
63. Final report on the safety assessment of Arnica montana extract and Arnica montanaInt J Toxicol. 2001;20(suppl 2):1-11.11558636
64. van Exsel DC, Pool SM, van Uchelen JH, Edens MA, van der Lei B, Melenhorst WB. Arnica ointment 10% does not improve upper blepharoplasty outcome: a randomized, placebo-controlled trial. Plast Reconstr Surg. 2016;138(1);66-73.27348641
65. Dennehy C, Tsourounis C, Bui L, King TL. The use of herbs by California midwives. J Obstet Gynecol Neonatal Nurs. 2010;39(6):684-693.21044150
66. Baatsch B, Zimmer S, Recchia DR, Bussing A. Complementary and alternative therapies in dentistry and characteristics of dentists who recommend them. Complement Ther Med. 2017;35:64-69.29154070

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