Tongkat Ali

Reviewed on 8/19/2021

Brand Name: Eurycoma longifolia, longjack, pasak bumi, tung saw

Generic Name: Tongkat Ali

Drug Class: Urology, Herbals

What Is Tongkat Ali and How Does It Work?

Tongkat ali suggested uses include for enhancement of male sexual function. Tongkat ali also has been used as an antimalarial.

  • Animal studies show some positive results for tongkat ali use for male sexual function enhancement; there have been no human clinical trials.
  • Tongkat ali is available under the following different brand and other names: Eurycoma longifolia, longjack, pasak bumi, and tung saw.

What Are Dosages of Tongkat Ali?

Dosages of Tongkat Ali
  • Check manufacturer's instructions
Dosage Considerations – Should be Given as Follows:
  • Extract (100:1): 25 mg orally every 2-3 days recommended by one manufacturer
  • Full-spectrum Powder: 200 mg orally once/day or 400 mg orally every other day


Digestive Disorders: Common Misconceptions See Slideshow

What Are Side Effects Associated with Using Tongkat Ali?

Common side effects of tongkat_ali include:

This is not a complete list of side effects and other serious side effects may occur. Call your doctor for information and medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What Other Drugs Interact with Tongkat Ali?

If your doctor has directed you to use this medication for your condition, your doctor or pharmacist may already be aware of any possible drug interactions or side effects and may be monitoring you for them. Do not start, stop, or change the dosage of this medicine or any medicine before getting further information from your doctor, healthcare provider, or pharmacist first.

  • Tongkat Ali has no known severe interactions with other drugs.
  • Tongkat Ali has serious interactions with at least 26 different drugs.
  • Moderate interactions of tongkat ali include:
  • Tongkat Ali has mild interactions with at least 25 different drugs.

This document does not contain all possible interactions. 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 the list with your doctor and pharmacist. Check with your physician if you have health questions or concerns.

What Are Warnings and Precautions for Tongkat Ali?


This medication contains tongkat ali. Do not take Eurycoma longifolia, longjack, pasak bumi, or tung saw if you are allergic to Tongkat Ali 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.


Effects of Drug Abuse

  • No information available

Short-Term Effects

  • See "What Are Side Effects Associated with Using Tongkat Ali?"

Long-Term Effects

  • See "What Are Side Effects Associated with Using Tongkat Ali?"


  • May decrease blood glucose levels.
  • May cause severe insomnia especially in high doses.

Pregnancy and Lactation


About how much does an adult human brain weigh? See Answer
Medscape. Tongkat Ali.

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