SupplementsHerbs & MushroomsTongkat Ali
Tongkat Ali
Eurycoma longifolia, also called longjack
A Southeast Asian root with one of the better cases among herbs sold for testosterone, especially in men who start low. Better doesn't mean settled.
- Builds up
- Weeks
- In your body
- Short, in early work
- Per 1 capsule
- 100 mg
- 30-day supply
- $6.00One capsule a day, plus packing and delivery
What is tongkat ali?
Tongkat ali is the root of Eurycoma longifolia, a slender tree from the rainforests of Malaysia and Indonesia. People there have long used it as a tonic for energy and male vitality.
Most testosterone herbs fail when they're tested. Tongkat ali is one of the few exceptions: a wide review of products sold as boosters listed it as possibly effective, both for healthy men and for men with low levels.
Ours is a concentrated root extract, labeled 20:1, with 100 mg in each capsule. That ratio means it took about 20 parts of root to make 1 part of extract.
What it does
- TestosteroneHelps support healthy testosterone levels already within the normal range.
- EnergyTraditionally used for everyday vitality and stamina.
- Stress and moodEarly research looks at how people feel under stress.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
What people take it for
Some evidenceTestosteroneA pooled look at the studies found total testosterone rose, and more clearly in men with low levels. Researchers still ask for more work.
Early daysLibido and sexual wellbeingA traditional use with some small studies behind it, not firm evidence.
Early daysTraining and energySmall studies, often in older active people. Interesting, but too few to lean on.
How long it takes
Studies usually lasted about 4 to 12 weeks. This isn't something you'd expect to feel in a few days.
- About 4 weeksThe shortest studies measured their first changes
- About 12 weeksWhere most studies stop
- After thatRetest your testosterone so you know whether it's doing anything for you
How long it stays in your body
Its best-known compound, eurycomanone, cleared fairly quickly in animal work. We couldn't find a solid human number, and the effect studied builds over weeks rather than hours.
What's in a capsule
One capsule holds 100 mg of a 20:1 root extract. Many studies used about 200 to 400 mg of extract a day, so one capsule is less than that, and extracts differ.
The men who started low saw the clearest change
When researchers pooled the studies in 2022, total testosterone rose in men taking tongkat ali, and the same held in the group with low testosterone. They called it promising and asked for more research before using it in medical care.
That detail matters. Your body holds testosterone in a range, so a man with healthy levels has less room to move. Results also depend on the extract, and products on the market vary. So what you read in a study may not carry over exactly to a different product.
There's also a real safety point on our supplier's label: it says not to take this if you have breast cancer, prostate cancer or another hormone-sensitive disease, and not to combine it with antidepressants except under close supervision. If your numbers are low, test first and talk with your doctor, since low testosterone can have causes that need their own care.
What it interacts with
- AntidepressantsThe label warns against taking it with antidepressants, including MAO inhibitors, tricyclics and fluoxetine, unless under close supervision. Talk to your doctor first.
- Testosterone and other hormone therapyIt could add to or confuse the picture. Your doctor should know, especially before blood tests.
- Blood pressure medicines, including propranololOne small study reported it changed how much propranolol reached the blood. Ask your doctor or pharmacist.
- Diabetes medicinesEarly work suggests it may affect blood sugar. Ask first and watch your numbers.
- Any regular medicineThe label says to check with a healthcare professional if you take medication.
Goes well with
Side effects
- Trouble sleeping, restlessness and feeling too warm have been reported.
- Studies at usual amounts have reported few problems, though they were small and short.
Check first if
- Breast cancer, prostate cancer or another hormone-sensitive disease: the label says not to take it.
- Taking an antidepressant: the label says only under close supervision.
- Pregnancy or breastfeeding: check with your healthcare professional first.
- Trying to conceive, or on hormone therapy: talk to your doctor first.
- Tested athletes: check your sport's rules and your product's testing.
The blood tests that go with it
- Total testosteroneWhat most studies measured, and the clearest way to see if it helps you.
- Free testosteroneThe share your body can use right away.
- SHBGThe protein that holds testosterone, which changes how to read the total.
- EstradiolMen make this from testosterone, so it's useful to read them together.
- Morning cortisolYour main stress hormone, tracked in some studies.
- Fasting glucoseWorth watching if you take diabetes medicine.
Work it out
Supplementation
Or start from a ready-made protocol.
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- FDA-registeredFacilities
- Accredited labsIndependent testing
- Non-GMOIngredient options
- OrganicIngredient options
- VeganFormula options
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
Want it more precise? Get the app.
A page can only tell you about Tongkat Ali. The app tells you about you: whether it fits, when to take it, and whether it's working.
- Checked against your blood work and everything you already take
- On your daily timeline, around your sleep, training and meals
- Followed over time, so you can see what moved
Tongkat AliOPEN 09:00Tongkat Ali against your blood work, your sleep and what you already take.
AIYour morning testosterone was on the low side last spring. Want to retest in 12 weeks to see what's changed?
ASK ABOUT TONGKAT ALIFind the goal that's yours.
Your record, your routine and LifeFrom AI, pointed at the outcome that matters to you.
Questions
Does tongkat ali increase testosterone?
It's one of the better-supported herbs here. A pooled look at the studies found total testosterone rose, more clearly in men with low levels. More research is still needed.
How long does tongkat ali take to work?
Studies usually lasted 4 to 12 weeks. A blood test before and after is the honest way to tell.
What are the side effects of tongkat ali?
Trouble sleeping, restlessness and feeling warm have been reported. Studies have been small and short, so rarer problems could be missed.
Who should not take tongkat ali?
Anyone with breast cancer, prostate cancer or another hormone-sensitive disease, according to the label. Ask first if you're pregnant, breastfeeding, or on any medication.
What does tongkat ali interact with?
The label warns about antidepressants. Hormone therapy, blood pressure medicines and diabetes medicines are worth asking about too.
Can women take tongkat ali?
Most research is in men. If you're a woman thinking about it, talk with your healthcare professional, and don't take it if you're pregnant or nursing without asking first.
Is tongkat ali better than tribulus?
For testosterone, the evidence favors tongkat ali. Tribulus mostly failed to change levels in studies.
Sources
- Leisegang K et al. Eurycoma longifolia improves serum total testosterone in men: a systematic review. Medicina, 2022.
- Morgado A et al. Do testosterone boosters really increase serum total testosterone? A systematic review. Int J Impot Res, 2024.
Written by LifeFrom from these sources, and not yet reviewed by a clinician. Talk to your doctor before starting a supplement.
