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Acacia rigidula


This drug or supplement is not currently available for sale or use in the Philippines. The information provided here is for informational purposes only.


What is Acacia rigidula used for?

Acacia rigidula or “blackbrush acacia” is a perennial shrub found in the American Southwest and Mexico.

As a dietary supplement it is commonly used for:

  • Promoting weight loss
  • Improving athletic performance

It is important to know that products that contain Acacia rigidula are considered “adulterated” and cannot be marketed legally in the US. It is currently considered a prohibited ingredient.

How does it work?

Some studies have shown that A. rigidula contains a variety of chemicals that have stimulant effects. Because of this, it is often promoted for weight loss and athletic performance.

However, many products listing A. rigidula as an ingredient also contain an amphetamine-like chemical called beta-methylphenethylamine (BMPEA).

Please discuss this with your pharmacist or doctor for more information before you decide to take products containing A. rigidula.

Precautions & Warnings

What should I know before using Acacia rigidula?

Despite being advertised as “all-natural” or “safe,” natural or food supplements must be treated as conventional medication. Certain herbal preparations can interact with other medications you are taking, increasing the risk of adverse drug reactions and toxicity.

A. rigidula containing products are considered dangerous and prohibited by the US FDA. Do not take any products containing it.

Is it safe during pregnancy or breastfeeding?

Pregnancy and breastfeeding

There isn’t enough information about the safety of using this herbal during pregnancy and breastfeeding. Because it is prohibited, do not take this supplement while pregnant or breastfeeding.

Please always consult your doctor to weigh the potential benefits and risks before taking this supplement.

Side Effects

What side effects can occur with Acacia rigidula?

All supplements have the potential to elicit side effects even with normal use. Many side effects are dose-related and will resolve when it is adjusted or at the end of therapy.

Potential side effects while using this supplement include:

  • Gastrointestinal discomfort
  • Heart palpitations
  • Tachycardia
  • Arrhythmias

You may experience some, none, or other side effects not mentioned above. If you have any concerns about a side effect or it becomes bothersome, consult your doctor or pharmacist.


What drugs may interact with Acacia rigidula?

To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and inform your doctor and pharmacist.

Because A. rigidula has stimulant effects, avoid taking the following together with it:

  • Caffeine
  • Amphetamines
  • Methylphenidate
  • Diet aids or fat burners
  • Illicit drugs

The liquid extract preparation of this medication may contain alcohol. Avoid taking the following together with this preparation:

  • Antihistamines
  • Sedatives
  • CNS depressants

If you experience an adverse drug interaction, stop taking this drug and continue taking your other medication. Inform your doctor immediately to reevaluate your treatment plan. Your dose may need to be adjusted, substituted with another drug, or discontinue using the drug.

Does food or alcohol interact with Acacia rigidula?

This medication may be taken with or without food. If you experience any gastrointestinal discomfort, taking this medication with meals may prevent this symptom. It is important to drink enough water while taking this medication.

The liquid extract preparation of this medication may contain alcohol thus alcohol consumption should be limited to prevent intoxication, especially in children or adults who need to drive or operate machinery.

Inform your doctor or pharmacist if you have any concerns regarding food-drug interactions.

What health conditions may interact with Acacia rigidula?

This supplement should be taken with caution if you have any of the following conditions or risk factors:

  • Allergy to any of the ingredients
  • Heart conditions

Inform your doctor or pharmacist if you have any concerns regarding specific health conditions.


The information provided is not a substitute for professional medical advice. You should ALWAYS consult your doctor or pharmacist before using Acacia rigidula.

What is the usual dose for Acacia rigidula?

The recommended dosage of this drug has not been established for treating any specific disease or condition. Consult with a doctor for the appropriate indication and dosage.

What form does Acacia rigidula come in?

This herbal supplement may be available in the following dosage forms:

  • Acacia rigidula bark extract
  • Acacia rigidula capsule


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Hello Health Group does not provide medical advice, diagnosis or treatment.

Acacia Rigidula: Is it legal?, https://www.opss.org/article/acacia-rigidula-it-legal, Accessed Aug 17, 2020 Acacia Rigidula Dietary Supplements, https://www.fda.gov/food/dietary-supplement-products-ingredients/acacia-rigidula-dietary-supplements, Accessed Aug 17, 2020 Stimulants, https://www.dea.gov/taxonomy/term/346, Accessed Aug 17, 2020
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Written by Stephanie Nera, RPh, PharmD Updated Aug 18, 2020
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