Pau D'arco

What Is Pau D'arco and How Does It Work?

Pau d'arco is an herbal supplement claimed to be anti-cancer and antimicrobial, especially anti-candida. Other uses for pau d'acrco include diabetes, ulcers, stomach inflammation (gastritis), liver ailments, asthma, bronchitis, joint pain, hernias, boils and wounds. Some people see pau d'arco as a "tonic and blood builder." It is also used to treat anemia.

  • Pau d'arco is available under the following different brand names: La Pacho and Tabeuia avellanedae.
  • Vitamin A is available under the following different brand names: Retinol, Aquasol A, Retinyl Acetate, and Retinyl Palmitate.

What Are Dosages of Pau D'arco?

Dosages of Pau D'arco:
  • See "Dosage Considerations"

Dosage Considerations – Should be Given as Follows:

Suggested Dosing:

  • 1-4 g/per day divided twice-three times per day, use no more than 7 days
  • 1 tsp bark steeped in boiling water, 2-8 times per day
  • Dose based on lapachol content; lapachol intake should be 1.5-2.0 g/day

What Are Side Effects Associated with Using Pau D'arco?

Side effects of pau d'arco include:

  • nausea
  • vomiting
  • dizziness
  • anti-coagulant effects (reduced by using whole bark)

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

What Other Drugs Interact with Pau D'arco?

If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider, or pharmacist first.

  • Pau d'arco has no known severe interactions with other drugs.
  • Pau d'arco has no known serious interactions with other drugs.
  • Pau d'arco has moderate interactions with 72 different drugs.
  • Minor interactions of pau d'arco include:
    • anamu
    • danshen
    • devil's claw

This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns, or for more information about this medicine.

What Are Warnings and Precautions for Pau D'arco?


This medication contains pau d'arco. Do not take La Pacho or Tabueia avellanedae if you are allergic to pau d'arco or any ingredients contained in this drug.

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.


  • Avoid the use of hypersensitivity, intravenous use, hypervitaminosis A, malabsorption syndrome (oral therapy), and pregnancy (recommended daily average).

Effects of Drug Abuse

  • No information available

Short-Term Effects

  • See "What Are Side Effects Associated with Using Pau D'arco?"

Long-Term Effects

  • See "What Are Side Effects Associated with Using Pau D'arco?"


  • Products highly variable in lapachol content
  • Negative anti-cancer results found by NCI based on isolated lapachol; whole bark contains synergistic compounds that reduce ADR's

Pregnancy and Lactation

  • There is no information available about the use of pau d'arco during pregnancy or breastfeeding. Consult your physician.
Medscape. Pau D'arco.
RxList. Pau D'arco Supplements.

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