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SupplementModerate evidenceImmunity

Arnica topical

EMA-monograph topical arnica for bruising and hand osteoarthritis, head-to-head non-inferiority to ibuprofen gel.

Why

Arnica (Arnica montana) flower-head preparations hold an EMA HMPC monograph as a Traditional Herbal Medicinal Product for topical use in bruises, sprains, and rheumatic complaints. The Widrig RCT directly compared topical arnica gel with ibuprofen gel for hand osteoarthritis and reported non-inferior pain reduction and function improvement over 3 weeks. Other RCTs report reduced bruising after laser surgery and improved post-surgical recovery.

How it works

Sesquiterpene lactones (helenalin, dihydrohelenalin) inhibit NF-κB activation, reducing pro-inflammatory cytokine production at the site of application. Flavonoids contribute additional antioxidant effects on the inflamed tissue.

Expected onset · Symptom relief often within days for bruising; 1–2 weeks for hand OA

How to take

Dosage

Topical gel or ointment: apply 2–3 times daily to the affected area for up to 3 weeks.

Timing

2–3 times daily during the symptomatic phase

On the label

Standardised topical preparations: A. Vogel Arnica Gel, Arnica Comp.-Heel, Boiron Arnigel. Concentration of tincture in finished product matters more than total weight.

Ideal for

Adults with localised soft-tissue inflammation, bruising, hand osteoarthritis pain, or post-surgical swelling.

Safety

Topical use only. Internal use is toxic (helenalin is cardiotoxic at internal doses). Apply to intact skin only; not for open wounds, infected skin, or near mucous membranes. Allergic contact dermatitis possible, especially in those sensitive to Asteraceae. Limit continuous use to 3–4 weeks. Avoid in pregnancy.

Evidence

At a glance

Widrig 2007 Rheumatol Int RCT (n=204 hand OA): topical arnica gel was non-inferior to ibuprofen 5% gel for hand pain and function over 3 weeks, with similar adverse-event rates. EMA classifies topical arnica preparations as Traditional Use for bruising, sprains and rheumatic complaints. Iannitti 2016 Adv Ther review summarises positive signal across post-surgical and trauma indications.

Where to get it

Shop Arnica topical on Amazon

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