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Arnica

Supplement botanical bone & joint
Aka: Arnica montana
Brands seen in Singapore: Boiron, Homeolab USA, Boericke & Tafel, MediNatura, Hyland's Naturals
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Topical gel studied for bruising and post-injury pain
Take with
Nothing — the studied forms go on the skin, not in it
Pros & cons
Pros
  • Topical arnica gel was well tolerated in the trials
  • Long traditional use for sprains and contusions
Cons
  • Pooled effect vs placebo was small, g=0.18, p=0.059
  • Swallowed, it can widen vessels and stall blood flow
  • The surgery trials used homeopathic dilutions
Sources
  1. Effects of Arnica Phytotherapeutic and Homeopathic Formulations on Traumatic Injuries and Inflammatory Conditions: A Systematic Review (Plants 2024) · read 2026-08-27
    what it says
    “A. montana is usually administered topically in pharmacological doses, or orally in very diluted doses … when ingested this herbal remedy can induce vascular dilation, blood stasis, and increased capillary permeability”
  2. Is Homeopathic Arnica Effective for Postoperative Recovery? A Meta-analysis of Placebo-Controlled and Active Comparator Trials (Front Surg 2021) · read 2026-08-27
    what it says
    “The metaanalysis of the placebo-controlled trials yielded an overall effect size of Hedge's g = 0.18 (95% confidence interval −0.007/0.373; p = 0.059)”
  3. HSA — Guidelines on prohibited and restricted ingredients in health supplements and traditional medicines (Oct 2025), Annex A · read 2026-08-27
    what it says
    “The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list.”
  4. HSA — Health Supplements Guidelines (Jan 2026), Table 4 Vitamins Limits / Table 5 Minerals Limits · read 2026-08-27
    what it says
    “Table 4: Vitamins Limits — Nutrient / Maximum Daily Limit … Table 5: Minerals Limits — Nutrient / Maximum Daily Limit”
  5. iHerb Singapore — Arnica Montana category page, default order (29 products) · read 2026-08-27
    what it says
    “Arnica Montana … Boiron … Boiron … Boiron … Homeolab USA … Boiron … Boericke & Tafel … MediNatura … Boiron … Hyland's Naturals … MediNatura … Herb Pharm”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.