Arnica is a medicinal plant with anti-inflammatory and pain-relieving properties, traditionally used to relieve bruises, sprains and muscle pain. Some studies suggest that it may also help relieve joint pain and reduce bruising, although scientific evidence is still limited.
Arnica, scientifically known as Arnica montana, can cause serious side effects if used incorrectly. It should never be ingested, as it is toxic and may cause vomiting, heart problems and breathing difficulties. It is contraindicated for pregnant or breastfeeding women, children under 12 and people with liver disease.
Arnica can be purchased at health food stores or pharmacies in the form of dried flowers, tinctures, oils, ointments or gels. It should always be used under medical guidance.
Health benefits
Due to its properties, arnica can be used for:
1. Relieving pain and swelling from minor injuries
Arnica contains sesquiterpene lactones, such as helenalin, which have been shown in laboratory studies to reduce the production of inflammatory substances, including prostaglandins and cytokines.
These properties may help relieve pain and swelling caused by minor bumps and contusions.
However, arnica should only be applied to intact skin and should never be used on cuts, scratches that break the skin, or open or bleeding wounds.
2. Reducing bruises
Arnica gel or ointment may help reduce bruising caused by bumps, injuries or trauma that leads to blood accumulating under the skin.
This is because arnica contains compounds such as helenalin, which have anti-inflammatory and pain-relieving properties, which can help reduce swelling and discoloration.
However, more studies are needed to confirm its effectiveness.
3. Relieving joint pain
Arnica may help relieve joint pain caused by osteoarthritis due to its anti-inflammatory properties, mainly attributed to compounds such as helenalin, which help reduce the activity of substances involved in inflammation.
In addition, arnica gel may help reduce pain and improve joint function, especially in people with hand osteoarthritis.
4. Relieving muscle pain and sprains
Arnica is traditionally used to relieve localized muscle pain and discomfort caused by sprains.
This use is recognized by the European Medicines Agency and is associated with the plant's anti-inflammatory and pain-relieving properties, which may help reduce discomfort in the affected area.
However, studies investigating arnica for muscle soreness after physical exercise, including marathon running, have not consistently shown benefits.
5. Reducing bruising and swelling after surgery
Some studies suggest that homeopathic arnica may help reduce bruising and swelling after certain surgical procedures.
However, the benefits appear to be small, and study results vary depending on the type of surgery and the arnica preparation used.
Bruising after surgery is common because small blood vessels may be damaged during the procedure, causing blood to collect under the skin.
Topical arnica should only be used after surgery if recommended by the surgeon and once the surgical wound has completely closed.
6. Relieving discomfort from varicose veins and hemorrhoids
Arnica is traditionally used to relieve pain and discomfort associated with varicose veins and hemorrhoids.
These conditions involve swollen or enlarged veins, which can cause symptoms such as pain, swelling or a feeling of heaviness.
However, there is not enough high-quality scientific evidence to confirm that arnica is effective for either condition.
A doctor should be consulted before using arnica for these purposes, especially for hemorrhoids, as arnica should not be applied to mucous membranes or broken skin.
7. Toothache and gingivitis
Arnica contains analgesic, anti-inflammatory, antiseptic, healing and antimicrobial effect due to the presence of helenalin in its composition. Therefore, it can be beneficial for reducing toothaches or gingivitis.
Although arnica should not be ingested due to its toxic effects, it can be used in the form of tea for gargling.
Also recommended: Home Remedies for Toothache: 6 Ways to Relieve Pain tuasaude.com/en/home-remedies-for-toothache8. Reducing inflammation associated with boils
Arnica contains lactones, flavonoids and phenolic compounds that have demonstrated anti-inflammatory and antimicrobial activity in laboratory studies.
For this reason, arnica has traditionally been used to help relieve pain and swelling associated with boils.
However, there is no reliable clinical evidence that arnica can treat boils, and it should not be applied to boils that are open, draining or surrounded by broken skin.
Boils that are large, painful, worsening or accompanied by fever should be assessed by a doctor, as they may require specific treatment.
9. Hair loss
Some studies with arnica have shown that using this plant together with other medicinal herbs such as jaborandi, chamomile or jojoba in natural hair shampoo formulations increases hair strength and growth and can be an important ally in the fight against hair loss.
Also recommended: Natural Remedies for Hair Loss: Effective Home Treatments & How to Prepare tuasaude.com/en/natural-remedies-for-hair-lossHow to use
Arnica flowers are the main part of the plant used in medicinal preparations. They can be used to make compresses, ointments, tinctures and oils for external application.
Arnica should never be ingested, as it can cause serious poisoning. It should also not be applied to open wounds, bleeding areas, the eyes or surgical wounds that have not completely healed.
Commercially prepared arnica products are generally preferable to homemade preparations because their concentration and quality are more consistent.
1. Arnica tea compresses
Arnica tea compresses are traditionally used to help relieve bruising, swelling and discomfort caused by minor bumps or contusions.
Arnica tea should only be used externally as a compress. It should never be consumed or used as a mouthwash or gargle, as it can cause serious side effects, including nausea, tremors and irregular heartbeats.
Ingredients:
- 1 teaspoon of dried arnica flowers;
- 250 mL of boiling water.
How to prepare:
Add the dried arnica flowers to the boiling water and let steep for 10 minutes.
Strain the infusion and allow it to cool to a comfortable temperature. Soak a clean compress in the infusion and gently apply it to the affected area.
Arnica compresses should only be used on intact skin and should never be applied to open or bleeding wounds or near the eyes. Stop using the compress if skin irritation develops.
2. Arnica ointment
Arnica ointment is traditionally used to help relieve muscle pain, minor bumps and bruises. It may also help bruises fade faster due to its anti-inflammatory properties.
Ingredients:
- 5 g of beeswax;
- 45 mL of olive oil or sweet almond oil;
- 4 tablespoons of chopped dried arnica flowers.
How to prepare:
Place the arnica flowers and oil in a heat-resistant container over a water bath. Heat gently over low heat for a few minutes, without allowing the oil to boil.
Remove from the heat and allow the flowers to infuse in the oil for a few hours.
Strain the mixture to remove the flowers, then gently reheat the infused oil with the beeswax until the wax melts.
Transfer the mixture to a clean, dry glass container with a lid and allow it to cool completely before closing.
Store the ointment in a cool, dry place away from direct sunlight.
Homemade ointments do not have a standardized concentration or established shelf life. For this reason, commercially prepared arnica ointments are preferable, especially for people with sensitive skin.
Arnica ointment should only be applied to intact skin and should be discontinued if redness, itching or irritation occurs.
3. Arnica tincture
Arnica tincture is an alcohol-based preparation traditionally used on the skin to help relieve bruises, muscle discomfort and joint pain.
However, concentrated arnica tinctures can irritate the skin and may increase the risk of adverse effects, particularly if applied to damaged skin.
For this reason, it is preferable to use a commercially prepared tincture specifically intended for topical use, following the dilution and application instructions on the label.
Arnica tincture should never be ingested or applied to open wounds, bleeding areas, mucous membranes or the skin around the eyes.
4. Arnica oil
Arnica oil is traditionally used to help relieve localized muscle pain, bruises, sprains and joint discomfort due to its potential anti-inflammatory and pain-relieving properties.
However, there is limited clinical evidence supporting its effectiveness for these conditions.
Ingredients:
- 10 g of dried arnica flowers;
- 100 mL of olive oil, almond oil or jojoba oil.
How to prepare:
Place the dried arnica flowers and oil in a clean, dry glass jar with a lid.
Stir well, close the jar and cover it with aluminum foil to protect the mixture from light.
Store the jar in a cool, dry place away from direct sunlight for 30 to 40 days, shaking it regularly.
After this period, strain the oil to remove the flowers and transfer it to another clean, dry glass container with a lid.
Because homemade arnica oil does not have a standardized concentration or established shelf life, commercially prepared products are preferable.
Arnica oil should only be applied to intact skin and should never be ingested. Follow the manufacturer's instructions or the guidance of a healthcare professional.
Possible side effects
Arnica is generally well tolerated by most adults when applied to intact skin for a short period of time and used as directed.
However, it can cause skin irritation, redness, itching, swelling or allergic contact dermatitis, especially in people who are sensitive to plants from the Asteraceae family, such as chamomile, daisies or ragweed.
Arnica should never be taken by mouth, as it contains toxic compounds that can cause serious side effects, including:
- Irritation of the mouth and throat;
- Stomach pain, nausea, vomiting or diarrhea;
- Dizziness or hallucinations;
- Muscle weakness;
- Irregular heartbeats or changes in blood pressure;
- Difficulty breathing;
- Bleeding;
- Seizures, coma or death in severe cases.
Arnica may also affect blood clotting. For this reason, people taking anticoagulant or antiplatelet medications, such as warfarin, aspirin or clopidogrel, should consult a doctor before using it.
Caution is also recommended when using arnica alongside supplements that may affect blood clotting, such as garlic, ginger or ginseng.
Seek emergency medical attention immediately if arnica has been ingested or if symptoms such as difficulty breathing, severe vomiting, irregular heartbeats or seizures occur.
Contraindications
Arnica should not be used by people who are allergic to this plant or other plants in the Asteraceae family, or by people with liver disease.
It is also contraindicated for children under 12, pregnant women, as it may increase the risk of miscarriage if ingested, and breastfeeding women, due to insufficient safety information.
People taking anticoagulant or antiplatelet medications should also avoid using arnica unless recommended by a doctor, as it may increase the risk of bleeding.
Arnica should never be ingested or applied to open wounds, bleeding areas, mucous membranes or the eyes, due to the risk of irritation and toxicity.
In addition, alcohol-based arnica tinctures should not be applied to damaged or sensitive skin. People undergoing treatment for alcohol dependence should consult their doctor before using preparations containing alcohol.
