🌳Amazonian Plant Medicine

Tahuari (Pau d'Arco Amarelo)

Tabebuia serratifolia

About Tahuari (Pau d'Arco Amarelo)

Tahuari (Pau d'Arco Amarelo) (Tabebuia serratifolia) is a herb used in the Amazonian Plant Medicine tradition to help with Immune Support, Inflammation, Fungal Infection, and Cancer Support. The bark (inner) is the part traditionally used, taken internally.

Botanical background

Handroanthus serratifolius, is a species of tree, commonly known as yellow lapacho, pau d'arco , yellow poui, yellow ipe, pau d'arco amarelo, or ipê-amarelo.

Source: Wikipedia, via iNaturalist

Parts used

Bark (inner) · internal
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Tahuari (Pau d'Arco Amarelo) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
💧

Tincture

20–40 drops in water, 2–3× daily
  • Pack dried Tahuari (Pau d'Arco Amarelo) into a jar and cover with 40–60% alcohol.
  • Seal and steep for 4–6 weeks, shaking daily.
  • Strain and store in a dark dropper bottle.
💊

Powder / Capsule

500 mg – 1 g, 1–3× daily
  • Grind dried Tahuari (Pau d'Arco Amarelo) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.

Pregnancy, Breastfeeding & Children

No herb-specific pregnancy/child safety research is documented for Tahuari (Pau d'Arco Amarelo) in our references — the guidance below is based on its general effect category, not research on Tahuari (Pau d'Arco Amarelo) itself. Always confirm with a midwife, doctor, or pediatrician.

Pregnancy

Use Caution

This herb has immune-modulating activity. Short-term, food-level use is generally lower risk, but concentrated/long-term use is generally reserved for when needed rather than routine — this is a general, mechanism-based caution, not herb-specific research.

Breastfeeding

Likely Safe

Immune-supportive herbs are generally considered lower-risk during breastfeeding at normal amounts; caution is reasonable with autoimmune conditions or immunosuppressant medications.

Children

Use Caution

Short-term, age-appropriate use for colds/immune support is common practice; long-term daily use is generally avoided without pediatric guidance.

Contraindications

  • Autoimmune conditions (lupus, MS, RA) — may overstimulate immune response

Warnings

⚠️ Allergic Reactions

Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.

⚠️ Not Medical Advice

This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.

Drug & herb interactions

May affect immune activity

Watch for: Immunosuppressants (for transplant or autoimmune conditions)

Immune-stimulating herbs can work against immunosuppressive therapy.

Where to find in nature

Native region

Amazon Basin — Brazil, Peru, Ecuador, Colombia

Climate

Tropical rainforest

Habitat

Deep within the Amazon rainforest canopy and riverbanks; many accessible only via indigenous guides

🌿 To see Tahuari (Pau d'Arco Amarelo) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier — never consume a plant you are not 100% certain of.

Where to buy

In store

  • Specialist botanical importers
  • Ayahuasca retreat centres and shamanic plant medicine suppliers (where legal)
  • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
  • Naturopathic clinics and integrative medicine practices
  • Specialist herbal apothecaries and herbalist practices

Online

iHerb

Wide selection of standardised extracts, capsules, and powders with lab testing

Mountain Rose Herbs

Premium bulk dried herbs — certified organic, ethically sourced

Starwest Botanicals

Large selection of certified organic bulk herbs and powders

Herb Pharm

High-quality liquid extracts and tinctures, rigorous quality standards

Amazon

Convenient — verify brand certifications and check third-party testing

Etsy

Small-batch artisan herbalists, hand-harvested and wildcrafted herbs

Quality tips

When buying Tahuari (Pau d'Arco Amarelo), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products — quality varies enormously.