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Dietary supplement

LJ 100 Tongkat Ali 100 mg Ingredients & Drug Interactions

by Double Wood Supplements

LJ 100 Tongkat Ali 100 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking LJ 100 Tongkat Ali 100 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

LJ 100 Tongkat Ali 100 mg is a dietary supplement by Double Wood Supplements 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. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against LJ 100 Tongkat Ali 100 mg by Double Wood Supplements

Ask about any prescription or over-the-counter medication and we check it for interactions with LJ 100 Tongkat Ali 100 mg by Double Wood Supplements — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of LJ 100 Tongkat Ali 100 mg by Double Wood Supplements

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 Jul 11, 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.

LJ 100 Tongkat Ali contains one active ingredient: Tongkat Ali extract at 100 mg per capsule. The capsules also contain two inactive ingredients — hypromellose (the capsule material itself) and rice flour as a filler.

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: support healthy testosterone levels and mood.
  • We looked for evidence on: Age-related testosterone deficiency, Sexual desire, Muscle strength, Athletic performance, Male vitality, Hormonal balance.
  • 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 Muscle strength, Age-related testosterone deficiency.

The data supports that Tongkat Ali is possibly effective for sexual desire. For athletic performance, the evidence suggests it's possibly ineffective.

For back pain, osteoporosis, and diabetes, there isn't enough reliable evidence yet to say whether it works.

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 and the consistency of products on the market are uncertain — quality can vary. The supplement may increase testosterone levels, and if that goes beyond your normal range, there's a theoretical risk of testosterone-related side effects like acne, insulin resistance, and liver stress.

During pregnancy, there isn't enough safety data, and because of possible hormonal effects, you should avoid it. While breastfeeding, there's no reliable safety information on file, so it's best to avoid this product too.

Talk with your doctor or pharmacist if you're pregnant, nursing, or thinking about becoming pregnant.

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 exact medications before taking this product. The most important one to flag is propranolol (Inderal), a blood-pressure and heart medication, which Tongkat Ali can weaken.

You should also double-check any drugs your liver processes through CYP1A2, CYP2C19, or CYP2A6 pathways — the ingredient may raise their levels. If you're on testosterone replacement, let your pharmacist know.

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 be worth trying if you're interested in sexual desire support and don't take propranolol or medications processed through your liver's CYP enzymes. If you take any prescription drugs — especially heart or blood-pressure medications — check them against the interaction tool on this page before starting.

And if you're pregnant, nursing, or on testosterone therapy, talk to your pharmacist first.

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 Oct 24, 2024.

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 LJ 100 Tongkat Ali 100 mg, straight from the product label.

Brand Double Wood Supplements
Barcode (UPC) 850033272024
Net contents 120 Capsule(s)
Market status On market
Date entered into DSLD Oct 24, 2024
DSLD ID 315658
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 LJ 100 Tongkat Ali 100 mg by Double Wood Supplements, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
120
UPC/BARCODE
850033272024
IngredientAmount% DV
Tongkat Ali100 mg--

Other ingredients: Hypromellose, Rice Flour

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.
Formula

LJ100 is a patented and clinically studied form of Tongkat ali that is standardized to 22% bioactive Eurypeptides and 40% Glyco Saponins. Studies suggest Tongkat may help support healthy testosterone levels and promote a positive mood.

LJ 100 Tongkat ali 100mg per capsule

Suggested/Recommended/Usage/Directions

Suggested use: as a dietary supplement take, take 1 serving per day. It can be taken with or without food.

Storage

Storage: Store in a cool, dark place. Do not freeze or expose to moisture or heat above room temperature.

Brand IP Statement(s)

Us Patent 7, 132, 117 Bioactive Fraction of Eurycoma longifolia

Formulation

Supports testosterone levels

FDA Statement of Identity

Dietary Supplement

Precautions

Warning: Caution: Do not exceed recommended dose. Discontinue use and consult your doctor immediately if any adverse reactions occur. Do not use LJ100 Tongkat ali and operate heavy machinery until you know how it affects you. Do not use if safety seal is damaged or missing.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement. Keep out of the reach of children.

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.

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

See for yourself

LJ 100 Tongkat Ali 100 mg by Double Wood Supplements label

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

LJ 100 Tongkat Ali 100 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 LJ 100 Tongkat Ali 100 mg by Double Wood Supplements

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container120 Amounts shown are per serving.

Tongkat Ali

Interacts with
248 drugs
100 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 monograph & interactions

Other (inactive) ingredients: Hypromellose, Rice Flour. These complete the product’s ingredient list but are not active constituents.

Interaction report

LJ 100 Tongkat Ali 100 mg by Double Wood Supplements Drug Interactions

Want to check YOUR meds against LJ 100 Tongkat Ali 100 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 248

Individual Drug Interactions

The ingredients in LJ 100 Tongkat Ali 100 mg interact with 248 drugs. Click any drug to see the details.

1 of the 1 ingredient in LJ 100 Tongkat Ali 100 mg interact with drugs. Each result below shows which ingredient is responsible. Tongkat Ali

Each ingredient & the kinds of drugs it affects

For each ingredient in LJ 100 Tongkat Ali 100 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 Ali5 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 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for LJ 100 Tongkat Ali 100 mg, from the product label.

Double Wood Supplements

See all Double Wood Supplements products
Name
Double Wood Supplements
Pharmacist Counseling Corner

LJ 100 Tongkat Ali 100 mg by Double Wood Supplements: Common Questions

Does LJ 100 Tongkat Ali 100 mg by Double Wood Supplements interact with any medications?
Yes. Based on its ingredients, LJ 100 Tongkat Ali 100 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?
LJ 100 Tongkat Ali 100 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 desire?
The evidence says it's possibly effective for that purpose. It's one of the better-studied uses of this supplement, though results aren't guaranteed for everyone.
Will this help me with athletic performance or muscle?
The data we have suggests Tongkat Ali is possibly ineffective for athletic performance. If that's your main goal, this may not be the right supplement.
What are the side effects of Tongkat Ali?
It's generally well tolerated in the short term. The main concern is that it may raise testosterone levels — and if they go too high, you could see acne, insulin resistance, or liver stress. Long-term safety isn't well established.
Can I take this if I'm pregnant or breastfeeding?
No. There isn't enough safety data during pregnancy, and the possible hormonal effects are a concern. While breastfeeding, there's no reliable safety information either. Talk with your doctor if you're pregnant or nursing.
What's in each capsule besides the Tongkat Ali?
Each capsule is made of hypromellose and contains rice flour as a filler. Those are the only other ingredients.

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

Not sure if LJ 100 Tongkat Ali 100 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.

LJ 100 Tongkat Ali 100 mg label
Go deeper

The Full Monographs Behind LJ 100 Tongkat Ali 100 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

LJ 100 Tongkat Ali 100 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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