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Dietary supplement

Longjack 300 Tongkat Ali 300 mg Ingredients & Drug Interactions

by LuckyHerbs

Longjack 300 Tongkat Ali 300 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Longjack 300 Tongkat Ali 300 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Longjack 300 Tongkat Ali 300 mg is a dietary supplement by LuckyHerbs with 1 active ingredient. Its ingredients are commonly taken for low testosterone or low libido in men, male fertility support, athletic performance and muscle strength.Based on those ingredients, 248 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Tongkat Ali Root Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Longjack 300 Tongkat Ali 300 mg by LuckyHerbs

Ask about any prescription or over-the-counter medication and we check it for interactions with Longjack 300 Tongkat Ali 300 mg by LuckyHerbs — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Longjack 300 Tongkat Ali 300 mg by LuckyHerbs

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 20, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This supplement contains one active ingredient: Tongkat Ali root extract at 300 mg per capsule. Tongkat Ali, also called Eurycoma longifolia, is a Southeast Asian plant root traditionally used for sexual function and general vitality.

The capsule itself is filled with inactive ingredients — cellulose, silica, and magnesium stearate — which are standard binders and flow agents.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: male sexual function and performance.
  • We looked for evidence on: Age-related testosterone deficiency, Erectile dysfunction (ED), Male Infertility, Sexual desire, Muscle strength, Athletic performance — and 2 related terms.
  • The strongest evidence on file: Eurycoma Longifolia is rated "Possibly Effective" for Sexual desire (Natural Medicines).
  • Also on file: Eurycoma Longifolia is rated "Possibly Ineffective" for Athletic performance.
  • Also on file: Eurycoma Longifolia is rated "Insufficient Reliable Evidence To Rate" for Erectile dysfunction (ED), Muscle strength, Age-related testosterone deficiency, Male Infertility.

The evidence for Tongkat Ali is mixed and limited. For sexual desire, there's some clinical backing — it's rated possibly effective based on available studies.

For athletic performance, the evidence suggests it's probably not helpful (possibly ineffective). For back pain, osteoporosis, and diabetes, there simply isn't enough reliable research to say whether it works or doesn't.

If sexual function is your reason for trying it, the data leans cautiously in your favor, but talk it over with your doctor first.

The evidence, ingredient by ingredient Eurycoma Longifolia

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Tongkat Ali is generally well tolerated in short-term studies, but long-term safety data is thin and product quality can vary widely — that's a gap worth knowing. There's one notable caution: because this supplement may raise testosterone levels, if your testosterone goes above the normal range, you could develop testosterone-related side effects like acne, insulin resistance, or liver toxicity.

Because of possible hormonal effects and limited safety data, the evidence advises against use during pregnancy and breastfeeding.

Side effects, ingredient by ingredient Eurycoma Longifolia

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Eurycoma Longifolia.
  • The most serious interaction on file is rated Moderate.
  • For scale: 248 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check your medications before taking this supplement if you take propranolol (Inderal) or any other blood pressure medicine — Tongkat Ali can reduce how well they work. You'll also want to confirm with your doctor or pharmacist if you're on any drug that your liver breaks down using CYP1A2, CYP2C19, or CYP2A6 enzymes, or if you're taking testosterone replacement.

No interactions are documented for other types of drugs, but the search tool on this page lets you verify your exact medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Tongkat Ali may help with sexual desire based on current evidence, but it's not proven for athletic performance or other uses. The real question is how it'll interact with your specific medications — especially propranolol and other drugs your liver processes.

If you're pregnant, breastfeeding, or taking hormonal medications, this isn't the right choice. Talk with your doctor or pharmacist before starting it to make sure it fits your situation.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 22, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Longjack 300 Tongkat Ali 300 mg, straight from the product label.

Brand LuckyHerbs
Barcode (UPC) 810026422720
Net contents 60 Veg Capsule(s)
Market status On market
Date entered into DSLD Mar 22, 2023
DSLD ID 283224
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Women (not pregnant or lactating), Adult Male (18-50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Longjack 300 Tongkat Ali 300 mg by LuckyHerbs, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Veg Capsule(s)
Maximum serving Sizes:
1 Veg Capsule(s)
Servings per container
60
UPC/BARCODE
810026422720
IngredientAmount% DV
Tongkat Ali Root Extract300 mg--

Other ingredients: Cellulose, Powder, Cellulose, Silica, Magnesium Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions

Suggested usage: Take 1 capsule daily as needed, or as recommended by your healthcare practitioner.

Formula

Eurycoma longifolia Jack is the scientific name for what is more commonly known as Tongkat Ali, Malaysian Ginseng, or Longjack. Although every part of the tongkat ali plant is used by traditional herbalists of Southeast Asia, its root is especially prized. Tongkat ali is known to possess various naturally occurring bioactive compounds, including Eurypeptides and Saponins.

This product delivers 300 mg non-GMO tongkat ali extract per capsule.

Men's support formula

Eurycoma longifolia Jack extract

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Precautions

Caution: For adults only.

This product is not intended for those with a serious medical condition or pregnant/nursing women. Consult your physician if taking any medication.

Keep out of reach of children.

Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Do not eat freshness packet.

General Statements

1 year happiness guarantee

Please recycle.

Brand IP Statement(s)

Lucky Herbs Herbal Supplements by Lucky Vitamin

FDA Statement of Identity

Dietary Supplement

Formulation

Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Produced in a GMP facility that processes other ingredients containing these allergens. Natural color variation may occur in this product.

V Vegan

Storage

Keep in bottle. Store in a cool, dry place after opening.

Seals/Symbols

Guaranteed quality & potency

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Longjack 300 Tongkat Ali 300 mg by LuckyHerbs label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Longjack 300 Tongkat Ali 300 mg label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Longjack 300 Tongkat Ali 300 mg by LuckyHerbs

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Tongkat Ali Root Extract

Interacts with
248 drugs
300 mg per serving

Eurycoma longifolia (tongkat ali) is a Southeast Asian herb most popular for supporting testosterone, libido, and male fertility, with some small huma...

Tongkat Ali Root Extract monograph & interactions

Other (inactive) ingredients: Cellulose, Powder, Cellulose, Silica, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Longjack 300 Tongkat Ali 300 mg by LuckyHerbs Drug Interactions

Want to check YOUR meds against Longjack 300 Tongkat Ali 300 mg?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
248Drugs
3 Moderate 245 Minor

Ingredients driving the most interactions

Tongkat Ali Root Extract 248

Individual Drug Interactions

The ingredients in Longjack 300 Tongkat Ali 300 mg interact with 248 drugs. Click any drug to see the details.

1 of the 1 ingredient in Longjack 300 Tongkat Ali 300 mg interact with drugs. Each result below shows which ingredient is responsible. Tongkat Ali Root Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Longjack 300 Tongkat Ali 300 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Tongkat Ali Root Extract5 drug types · 248 drugs

Propranolol (Inderal)

Eurycoma longifolia can reduce the levels and clinical effects of propranolol.
A small clinical study in healthy persons shows that taking a single dose of a water-based Eurycoma longifolia extract 200 mg, in combination with a single dose of propranolol 80 mg, reduces the propranolol area under the curve (AUC) by 29%, reduces the peak concentration by 42%, and increases time to peak concentration by 86% when compared with control. Since the elimination half-life of propranolol did not change, it seems that Eurycoma longifolia alters the kinetics of propranolol by decreasing its absorption in the gut, and not by altering its metabolism. It is not known if separating administration will prevent this interaction.

Likelihood Probable Evidence A
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, Eurycoma longifolia might increase levels CYP1A2 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP1A2 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2A6 (Cyp2A6) Substrates

Theoretically, Eurycoma longifolia might increase levels of CYP2A6 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP2A6 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, Eurycoma longifolia might increase levels of CYP2C19 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP2C19 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Testosterone

Theoretically, Eurycoma longifolia may further increase levels of testosterone.
A clinical study in aging males with testosterone levels below 300 ng/dL shows that taking a specific water extract of Eurycoma longifolia roots (Physta; Biotropics Malaysia) 100-200 mg daily with breakfast for 12 weeks increases total testosterone levels by 8% to 11% when compared with placebo. It is unclear whether this increase would occur in individuals with normal testosterone levels.

Likelihood Possible Evidence D
Tongkat Ali Root Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Longjack 300 Tongkat Ali 300 mg, from the product label.

LuckyHerbs

See all LuckyHerbs products
Name
Lucky Health Group Inc.
City
Conshohocken
State
PA
ZipCode
19428
Phone Number
1-888-635-0474
Web Address
www.LuckyVitamin.com
Pharmacist Counseling Corner

Longjack 300 Tongkat Ali 300 mg by LuckyHerbs: Common Questions

Does Longjack 300 Tongkat Ali 300 mg by LuckyHerbs interact with any medications?
Yes. Based on its ingredients, Longjack 300 Tongkat Ali 300 mg has a known interaction with 248 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Longjack 300 Tongkat Ali 300 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does Tongkat Ali actually improve sexual function?
The research is cautiously positive — it's rated possibly effective for sexual desire based on clinical studies. That means some evidence supports it, but it's not a sure thing, and results vary. Your own results will depend on your situation, so keep your expectations realistic and talk with your doctor about whether it makes sense for you.
Can I take this if I'm pregnant or breastfeeding?
No. The safety data advises against using Tongkat Ali during pregnancy because of possible hormonal effects and limited safety information. The same goes for breastfeeding — there isn't enough reliable safety data. Talk with your doctor or pharmacist if you're considering it before or after pregnancy.
What are the side effects?
The main risk is if Tongkat Ali raises your testosterone beyond the normal range. That could lead to acne, insulin resistance, liver problems, and other testosterone-related effects. The supplement itself is generally well tolerated in short-term use, but long-term safety isn't well established.
Will this work for back pain or osteoporosis?
The evidence isn't there yet to say. There isn't enough reliable research on Tongkat Ali for either of those conditions, so we can't rate it as effective or ineffective. If that's what you're treating, talk with your doctor about options with stronger evidence behind them.
What's the difference between this and other Tongkat Ali products?
This product contains 300 mg of Tongkat Ali root extract per capsule. Quality and potency vary widely across brands because supplement manufacturing isn't as tightly regulated as prescription drugs. Your doctor or pharmacist can help you pick a reliable brand if you decide to use Tongkat Ali.
Can I use this if I'm on testosterone replacement?
Probably not without checking first. Tongkat Ali may raise testosterone levels further, and combining them could push your testosterone too high and cause side effects. Your doctor needs to know if you're considering both — they may need to adjust one or the other, or advise against combining them.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Longjack 300 Tongkat Ali 300 mg is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Longjack 300 Tongkat Ali 300 mg label
Go deeper

The Full Monographs Behind Longjack 300 Tongkat Ali 300 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Eurycoma Longifolia

Interacts with 248 drugs

Eurycoma longifolia (tongkat ali) is a Southeast Asian herb most popular for supporting testosterone, libido, and male fertility, with some small human studies suggesting possible benefits....

Read the full Eurycoma Longifolia monograph →
Sources

Sources & How We Checked

Longjack 300 Tongkat Ali 300 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 4 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Eurycoma Longifolia 4 references
  1. Salman SA, Amrah S, Wahab MS, et al. Modification of propranolol's bioavailability by Eurycoma longifolia water-based extract. J Clin Pharm Ther 2010;35:691-6. PubMed
  2. Tambi MI, Imran MK, Henkel RR. Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism? Andrologia 2011 Jun 15. doi: 10.1111/j.1439-0272.2011.01168.x. [Epub ahead of pri PubMed
  3. Han YM, Kim IS, Rehman SU, Choe K, Yoo HH. In vitro evaluation of the effects of Eurycoma longifolia extract on CYP-mediated drug metabolism. Evid Based Complement Alternat Med 2015;2015:631329.
  4. Chinnappan SM, George A, Pandey P, Narke G, Choudhary YK. Effect of Eurycoma longifolia standardised aqueous root extract-Physta ® on testosterone levels and quality of life in ageing male subjects: a randomised, double-blind, placebo-controlled multicent

See these in context on the Eurycoma Longifolia monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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