Red Alder
Important Disclaimer
This is not medical advice. Consult a qualified healthcare provider before using any remedy, especially if pregnant, breastfeeding, on medication, or managing a health condition.
Overview
Red Alder is the largest native alder in North America and the most common hardwood tree of the Pacific Northwest, growing abundantly along streams, riverbanks, and disturbed areas from Alaska to California. Its name comes from the reddish-orange color the bark turns when cut or scraped. Red Alder was one of the most important medicinal trees for Pacific Northwest Native American peoples, used for a remarkable range of conditions from skin diseases and digestive complaints to pain relief and lymphatic support. The bark contains salicin, tannins, and betulin — compounds with anti-inflammatory, antimicrobial, and astringent properties. Red Alder is gaining renewed interest in herbal medicine for its lymphatic and skin-supporting properties.
Traditional Use
Red Alder was one of the most widely used medicinal trees among Pacific Northwest Native American peoples. The Quinault used bark tea for tuberculosis and as a blood purifier. The Nlaka'pamux used it for skin diseases, venereal diseases, and as a general tonic. The Haida used bark poultices for skin conditions and wounds. The Saanich used it for digestive complaints and as a laxative. The Cowichan used alder bark for lymphatic swellings and as a blood cleanser. Many tribes used the inner bark as an emergency food and the red dye from the bark for coloring baskets, clothing, and fishing nets. Early European settlers in the Pacific Northwest adopted alder bark as a medicinal remedy, using it for skin conditions, digestive complaints, and as a substitute for cascara sagrada (a related laxative bark). Today, red alder is used in herbal medicine primarily for lymphatic support, skin conditions, and as a digestive bitter tonic.
Key Active Compounds
Salicin & Salicortin
Natural salicylate glycosides that provide anti-inflammatory and analgesic effects through conversion to salicylic acid in the body. These compounds contribute to red alder's effectiveness for pain and inflammation.
Betulin & Betulinic Acid
Triterpene compounds found in the bark with anti-inflammatory, antimicrobial, antiviral, and potential anticancer properties. Betulinic acid has been studied for its activity against melanoma and HIV.
Tannins (Ellagitannins)
Astringent polyphenols that tone mucous membranes, reduce inflammation, provide antimicrobial activity, and support wound healing. The high tannin content contributes to red alder's effectiveness for skin conditions and digestive complaints.
Oregonin (Hirsutanonol Glucoside)
A diarylheptanoid compound unique to alder species with significant anti-inflammatory activity, inhibiting NF-κB and reducing pro-inflammatory cytokines. This compound is considered one of the primary anti-inflammatory agents in red alder.
Lupeol
A pentacyclic triterpene with anti-inflammatory, antimicrobial, and antiparasitic properties that contributes to red alder's broad therapeutic activity.
Evidence-Based Benefits
Lymphatic Support & Skin Conditions
Traditional useRed alder has a strong traditional reputation as a lymphatic herb, used for swollen lymph nodes, skin eruptions, and conditions associated with poor lymphatic drainage. The combination of tannins, betulin, and oregonin supports lymphatic tissue and reduces inflammation in skin conditions including eczema, psoriasis, and chronic skin infections.
Anti-inflammatory & Pain Relief
Some studiesThe salicylates and oregonin in red alder bark provide measurable anti-inflammatory effects. Laboratory studies confirm oregonin's potent NF-κB inhibition. Traditionally used for joint pain, muscle aches, and inflammatory conditions. The combination of multiple anti-inflammatory compounds provides broad-spectrum activity.
Digestive & Liver Support
Traditional useRed alder bark acts as a bitter tonic, stimulating digestive secretions and bile flow. Traditionally used for sluggish digestion, liver complaints, and as a mild laxative. The tannins help tone the digestive mucosa and reduce inflammation in conditions like gastritis and colitis.
Antimicrobial & Wound Healing
Some studiesLaboratory studies demonstrate red alder bark extracts have significant antimicrobial activity against a range of bacteria and fungi. The tannins and betulin contribute to wound healing by reducing infection risk and promoting tissue repair. Traditionally used as a topical remedy for infected wounds and skin ulcers.
Common Preparation Methods
Red Alder Bark Decoction
Add 1-2 teaspoons of dried, chopped red alder bark to 2 cups of cold water. Bring to a boil, reduce heat, and simmer for 15-20 minutes. Strain and drink. The tea is bitter and astringent — add honey or combine with more pleasant-tasting herbs.
Dosage: 1-2 cups daily for digestive, lymphatic, or skin support.Decoction is necessary for bark to release active compounds. Bitter taste stimulates digestive secretions — part of the therapeutic action. Avoid in those with salicylate sensitivity.
Red Alder Bark Tincture
Use a 1:5 tincture in 40-60% alcohol. Take 2-4 ml up to three times daily in water. Tincture is more convenient and has a longer shelf life.
Dosage: 2-4 ml, 2-3 times daily.Effective for lymphatic support and skin conditions. Combine with other lymphatic herbs like cleavers or red clover for enhanced effect.
Topical Bark Wash or Poultice
Simmer 2-3 tablespoons of red alder bark in 2 cups of water for 20 minutes. Strain and allow to cool. Use as a wash for skin conditions, wounds, or rashes. Alternatively, apply warm bark directly as a poultice to affected areas.
Dosage: Apply 2-3 times daily to affected skin areas.Traditional method for skin conditions and wound care. The tannins and antimicrobial compounds provide direct topical benefit. Avoid on very sensitive or broken skin initially — test on small area first.
Safety & Cautions
Please read carefully before use
Contraindications
- Aspirin or salicylate allergy — avoid due to salicin content
- Children under 16 with viral infections (Reye's syndrome risk from salicylates)
- Pregnancy: avoid medicinal doses
- Active bleeding disorders
Drug Interactions
- Anticoagulants: salicylates may increase bleeding risk
- NSAIDs and aspirin: additive effects
- Laxatives: may have additive laxative effects at high doses
Possible Side Effects
- Digestive upset or loose stools at high doses
- Allergic reactions in those with salicylate sensitivity
- Skin irritation with topical use in sensitive individuals
Special Populations
- Avoid in children under 16 with viral infections. Avoid during pregnancy in medicinal doses. Those with aspirin allergy should avoid. Generally well-tolerated in healthy adults at recommended doses. Limited clinical safety data — use conservatively and consult healthcare provider.
Sources & References
Journal of Ethnopharmacology, 2003
Phytochemistry, 2000
Natural Product Reports, 2004
Quick Reference
Betulaceae
Bark, Leaves, Catkins
Bitter, astringent, slightly acrid
Safety First
Always consult with a qualified healthcare provider before starting any new remedy, especially if you have existing health conditions or take medications.