Tongkat ali vs ashwagandha

Tongkat ali and ashwagandha have limited-to-moderate evidence for modest testosterone increases in selected male populations, such as men with low baseline levels, aging symptoms, infertility, or stress a 2026 review in Pharmacological Research. Neither reliably moves testosterone for everyone, and the research is not strong enough to promise durable benefits.

Bodies are not spreadsheets, and a small shift in one number does not always feel like a big shift in real life. We would rather you know that before you try either one.

What is tongkat ali?

Tongkat ali, also called Eurycoma longifolia or long Jack, is a root from a Southeast Asian shrub. The name sounds like a wizard's cat, and we are fond of it for that reason alone. People have used it for a long time in traditional settings, and it often turns up in supplement aisles next to words like vitality. We will stick to what the reviews say. A 2024 systematic review looked at 52 studies covering 27 proposed testosterone boosters and found that most did not move total testosterone. It placed Eurycoma longifolia in the possibly effective group for men with late-onset hypogonadism and for healthy men. A 2019 review in the Journal of Ethnopharmacology put it in the moderate evidence group for raising total testosterone and improving seminal parameters. A 2026 review in Pharmacological Research said the evidence is limited-to-moderate and depends heavily on the extract, the population, and the endpoint.

What is ashwagandha?

Ashwagandha is Withania somnifera, a shrub whose root is used in powders and capsules. It is the one people pronounce four different ways in the checkout line. It shows up in the same testosterone conversations, often with a side of calm. A 2019 review found moderate evidence that the root can raise total testosterone and improve semen parameters in men with fertility concerns; one study in that review used 5,000 mg of powdered root daily for 12 weeks. A 2026 review also listed it as limited-to-moderate for modest testosterone increases, especially in men with low baseline testosterone, aging-related symptoms, infertility, or stress. The 2024 systematic review considered it possibly effective for healthy men.

Tongkat ali vs ashwagandha for testosterone

Both plants sit in the same evidence bucket: modest, mixed, and dependent on who is taking them. The 2024 review considered both possibly effective for healthy men, and tongkat ali also for men with late-onset hypogonadism. The 2019 review gave moderate evidence to both for raising total testosterone and improving seminal parameters. The 2026 review was more cautious, calling the evidence limited-to-moderate and saying durable symptomatic benefit is less consistent and cannot be generalized across extracts. If you were hoping for a clear victor, the literature is not cooperating.

Tongkat ali vs ashwagandha dosage

Doses in the reviews vary by extract and study design. For ashwagandha, the 2019 review reported one fertility study using 5,000 mg of powdered root daily for 12 weeks. For tongkat ali, the reviews describe standardized extracts but do not give a single universal daily amount that applies to every product. We are not in the business of telling you what to swallow; we just read the studies and pass them along. If you want a deeper dive on ashwagandha standardization, we wrote about ashwagandha at 5% withanolides and what that means for dosing.

Ingredient	Typical daily amount in studies	Why it matters	Herbal source
Tongkat ali (Eurycoma longifolia)	Standardized extract; studies vary a 2026 review	Moderate to limited evidence for modest testosterone support in some men	Root of a Southeast Asian shrub
Ashwagandha (Withania somnifera)	5,000 mg powdered root daily in one fertility study	Moderate to limited evidence for testosterone and semen parameters	Root of a Solanaceae shrub

Tongkat ali vs ashwagandha side effects and safety

The 2026 review said clinical use needs active surveillance for hepatotoxicity, cardiovascular effects, contamination, and drug interactions. It also noted that evidence grades are preparation- and population-specific and do not apply to uncharacterized products. That means a random capsule with no standardization is not the same as the extracts used in the trials. If you take medication or have a health condition, talk to your clinician before adding either root. We also keep an eye on shilajit purity, which you can read about in our note on whether shilajit is safe from heavy metals.

Tongkat ali vs ashwagandha which is better

If your interest is testosterone support, the reviews do not crown a winner. Both have limited-to-moderate evidence for modest increases in specific groups, and neither has durable, across-the-board proof. The 2019 review names ashwagandha as one of the supported phytotherapies for serum testosterone and semen parameters in men with fertility concerns. We happen to make Mast, a capsule with 400 mg of shilajit extract 30:1 plus 100 mg each of ashwagandha, sea moss, and tongkat ali.

FAQ

Does tongkat ali increase testosterone? A 2024 systematic review found it possibly effective for men with late-onset hypogonadism and healthy men, while a 2019 review found moderate evidence for raising total testosterone and improving seminal parameters.

Does ashwagandha increase testosterone? A 2019 review found moderate evidence that ashwagandha root can raise total testosterone and improve semen parameters, and a 2026 review described the evidence as limited-to-moderate for modest increases in selected men.

Is tongkat ali better than ashwagandha? The reviews do not declare a winner. Both sit in the limited-to-moderate evidence group for modest testosterone increases in specific populations, and neither is proven to deliver durable benefits for everyone a 2026 review in Pharmacological Research.

What dose of ashwagandha was used in studies? One fertility study reviewed in 2019 used 5,000 mg of powdered ashwagandha root daily for 12 weeks a 2019 review in the Journal of Ethnopharmacology.

Can I take tongkat ali and ashwagandha together? The reviews do not directly test that combination, so we cannot say. They do note that evidence is preparation-specific and that drug interactions are a reason for surveillance a 2026 review in Pharmacological Research.

Sources

• Do "testosterone boosters" really increase serum total testosterone? A systematic review. International journal of impotence research, 2024 (Journal Article, Systematic Review)
• Beyond tribulus (Tribulus terrestris L.): The effects of phytotherapics on testosterone, sperm and prostate parameters. Journal of ethnopharmacology, 2019 (Journal Article, Review)
• Analysis of androgen modulation by natural products. Pharmacological research, 2026 (Journal Article, Review)

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.