Is ashwagandha or tongkat ali better for testosterone?

Tongkat ali. Both score 6.5 on the hormonal subrating, so the tie breaks on evidence. Leisegang 2022 pooled five randomized trials showing improved total testosterone, strongest in hypogonadal men, and Tambi 2012 reported 90.8% normalization after 200 mg/day for a month. Ashwagandha's hormonal anchor is a crossover study whose numbers its own report tempered.

Is ashwagandha or tongkat ali better for stress and anxiety?

Ashwagandha, and it isn't close. Stress resilience 7.5 against 6.5, anxiety 7.5 against 4.5. Arumugam 2024 pooled nine trials and 558 participants showing lower perceived stress, anxiety and cortisol. Tongkat ali has no anxiety-specific trials, and it can feel activating in an already anxious person.

Can I take ashwagandha and tongkat ali together?

Yes, and the mechanisms support it. Ashwagandha damps HPA-axis output and cortisol from the top. Tongkat ali frees testosterone from SHBG at the other end. Cortisol is their only shared target, so they're complementary rather than redundant. Add the second one at its listed dose, keep tongkat ali in the morning, and change one variable at a time.

How long before I know if either one is working?

Both give a first noticeable change in about a week, which means nothing. Ashwagandha's assessment window is 8 weeks and full effect lands around week 8. Tongkat ali reaches full effect around week 4 but its assessment window is 12 weeks. Judge at 8 and 12 respectively, not before.

Which one is cheaper?

Ashwagandha, barely. $15 to $30 a month at 300 mg KSM-66 twice daily against $20 to $40 for verified Physta or LJ100, both priced 2026-09-07 at retail. A $5 to $10 difference should not decide this. Going below either band buys unverified material, not a discount.

Who should avoid ashwagandha?

Anyone pregnant, breastfeeding, or trying to conceive without clinician guidance. Anyone with hyperthyroidism, Graves' disease, or current or past liver disease. Also anyone on thyroid hormone therapy, sedatives or benzodiazepines, or immunosuppressants, and anyone with a nightshade allergy. Don't run it continuously past 8 to 12 weeks without a break.

Who should avoid tongkat ali?

Anyone pregnant, nursing, or under 18. Anyone with hormone-sensitive cancer, unexplained high PSA or prostate symptoms, or active liver disease without monitoring. Anyone on TRT without estradiol and symptom monitoring should not add it either. EFSA 2021 did not establish safety for Physta because of animal genotoxicity findings, which is a regulatory flag rather than a clinical-dose harm signal.

Do the effects last after I stop?

No, on either. Tongkat ali's own report says effects wash out after stopping and that it rents a hormonal nudge rather than rebuilding the HPG axis. Ashwagandha scores 2.5 out of 5.0 on durability against tongkat ali's 2.2. Plan for cycling rather than a permanent fix, and ashwagandha in particular wants a break past 8 to 12 weeks.

Head-to-Head Comparison

Ashwagandha vs Tongkat Ali: Which Is Better for Testosterone?

Should I take ashwagandha or tongkat ali?

Reviewed 09/07/2026

Ashwagandha scores 6.8 and tongkat ali 7.0, so the overall numbers do not decide it. Pick ashwagandha when stress, anxiety, or sleep is the complaint: its subratings there run 7.5, 7.5, and 6.5. Pick tongkat ali for low testosterone, libido, and energy. Costs are close, $15 to $30 against $20 to $40 a month.

Ashwagandha 6.8, tongkat ali 7.0. A 0.2 gap decides nothing, so read the use-case rows instead.
Ashwagandha works top down: it damps HPA-axis output and cortisol and touches GABA-A signaling. Tongkat ali works at the other end, on SHBG binding, LH signaling and free testosterone.
Stress and anxiety are not close. Ashwagandha's anxiety subrating is 7.5 against 4.5, and tongkat ali can feel activating rather than calming.
Testosterone, libido and energy go the other way. Tongkat ali's energy subrating is 6.0 against 3.5, and Tambi 2012 normalized testosterone in 90.8% of hypogonadal men.
Both are ordinary retail supplements, and both hinge on standardization. KSM-66, Sensoril or Shoden on one side, verified Physta or LJ100 on the other. Cheap bulk powder is a different product.
The contraindication lists barely overlap. Thyroid disease and liver disease rule out ashwagandha. Hormone-sensitive cancer, high PSA and unmonitored TRT rule out tongkat ali. Pregnancy rules out both.

At a Glance

Option A

Ashwagandha

6.8 / 10 Worth trying

Upside

Efficacy 3.8
Breadth 4.5
Evidence 4.0
Speed 3.0
Durability 2.5
Bioindividuality 3.5

Downside

Safety Risk 2.5
Side Effects 2.3
Cost 1.5
Effort 1.0
Opportunity Cost 2.0
Dependency 1.5
Reversibility 1.5

Best at:

Stress Resilience 7.5
Anxiety 7.5
Sleep Quality 6.5
Hormonal 6.5

Withanolide-rich Withania somnifera root extract. BioHarmony 6.8, worth trying.

Read full BioHarmony report →

Head-to-Head Verdict

Use Case	Winner	Rationale
Stress Resilience	Ashwagandha	Ashwagandha 7.5 against tongkat ali 6.5, and the evidence depth widens the gap further than the numbers do. Arumugam 2024 pooled nine randomized trials and 558 participants showing lower perceived stress, anxiety and serum cortisol. Tongkat ali's anchor here is Talbott 2013, one 63-person trial at 200 mg/day for 4 weeks.
Anxiety	Ashwagandha	Ashwagandha 7.5 against tongkat ali 4.5, the widest gap in this comparison. Fatima 2024 found reduced HAM-A anxiety scores across five randomized trials. Tongkat ali has no anxiety-specific trials at all: its score is inferred from stress-hormone and mood data, and it can feel activating in exactly the person who came for calm.
Sleep Quality	Ashwagandha	Ashwagandha 6.5 against tongkat ali 4.8. Langade 2019 ran a placebo- controlled insomnia and anxiety trial with objective and subjective sleep outcomes, and Sensoril is the extract to pick when sleep is the target. Tongkat ali's sleep effect is indirect through cortisol timing, and evening dosing commonly causes insomnia.
Mood	Both (Stack)	Both score 6.0, and they get there through different machinery. Ashwagandha leans on Alsanie 2026, 22 randomized trials and 1391 participants covering stress, anxiety and depression. Tongkat ali leans on Talbott 2013 and its Profile of Mood States improvements in tension, anger and confusion. Complementary targets, equal scores, no reason to choose.
Hormonal	Tongkat Ali	Both score 6.5, so the subratings tie and the evidence breaks it. Leisegang 2022 pooled five randomized trials showing improved total testosterone, strongest in hypogonadal men, and Tambi 2012 reported 90.8% normalization after 200 mg/day for one month. Ashwagandha's hormonal anchor, Lopresti 2019, is a crossover study whose numeric wording the report's own audit tempered.
Libido	Tongkat Ali	Tongkat ali 6.3 against ashwagandha 5.5, and the mechanism matches the complaint. Displacing testosterone from SHBG raises the free fraction, which is the lever libido actually responds to. Ashwagandha's libido score rides on stress and anxiety improvement, which helps a stressed person and does little for a low-androgen one.
Energy	Tongkat Ali	Tongkat ali 6.0 against ashwagandha 3.5. Ashwagandha's energy effect is restorative rather than stimulating, and low-stress users can feel sedated or blunted instead, especially on Sensoril or above 600 mg/day. Tongkat ali's energy signal is downstream of the testosterone-to-cortisol shift in Tambi 2012, and it is dosed in the morning for that reason.
Fertility Male	Tie	Ashwagandha 6.0 against tongkat ali 5.3, and this is the row where the higher subrating does not win. Ashwagandha's anchor is Lopresti 2019, a crossover study the audit tempered, and its report also flags trying to conceive as a clinician-guidance context. Tongkat ali has Tambi 2012 plus animal sperm data. Neither is a fertility treatment.
Strength Power	Tongkat Ali	Tongkat ali 5.8 against ashwagandha 5.0, and both have real training data. Wankhede 2015 is a resistance-training randomized trial supporting strength and recovery on ashwagandha. Talbott 2013 reported lean-mass and strength gains in trained men, and Henkel 2014 found force improvements in active seniors. Androgen support edges out stress support here.

Cost Comparison

Intervention	Monthly Cost	Notes
Ashwagandha	$15 to $30	Priced 2026-09-07, retail channel, at 300 mg KSM-66 with breakfast and 300 mg with dinner. That $15 to $30 buys a third-party-tested standardized extract.Generic root powder runs $5 to $15 and carries adulteration risk, so the cheap tier is a different product rather than the same product at a discount.
Tongkat Ali	$20 to $40	Priced 2026-09-07, retail channel. The report prices verified Physta or LJ100 at $20 to $40 a month across 200 to 400 mg/day.The 200 mg/day protocol used in the trials sits at the low end of that band, so the standard clinical dose is also the cheapest one.
The difference	About $5 to $10 a month	Both bands overlap, and $5 to $10 a month is not a reason to pick either one. Price only matters here as a floor: dropping below it means unverified material.The real spend difference is verification. Tongkat ali's report marks purity verification as required because cheap bulk powder carries active-marker and heavy-metal uncertainty. Ashwagandha does not, though third-party testing is still worth the premium.

When to Switch

Both shift something inside a week, so week one tells you nothing. Judge ashwagandha at 8 weeks and tongkat ali at 12, their assessment windows. Move to tongkat ali when stress and sleep improved but libido, energy and testosterone stayed flat. Move back when androgens lifted and you still feel wired at night. Mechanisms are complementary, so overlapping works: add tongkat ali in the morning.

Who Should Pick What?

Chronically stressed adult with poor sleep onset

Ashwagandha

Stress resilience 7.5, anxiety 7.5, sleep quality 6.5, against 6.5, 4.5 and 4.8. This is the profile the ashwagandha trial base was actually built on. Use KSM-66 for daytime, Sensoril if sleep is the primary target.

Man over 35 with measured low or borderline testosterone or high SHBG

Tongkat Ali

Displacing testosterone from SHBG is the specific thing tongkat ali does, and Tambi 2012 normalized testosterone in 90.8% of late-onset hypogonadal men after 200 mg/day for a month. Get the labs first, then use verified Physta or LJ100 and retest.

Easily overstimulated, already anxious, already sleeping badly

Ashwagandha

Tongkat ali's anxiety subrating is 4.5 and its own report warns it can feel activating, with insomnia among the most consistent reported effects. Fix the stress axis before touching the androgen axis.

Hyperthyroid, Graves' disease, on levothyroxine, or with liver disease

Tongkat Ali

Every one of those is a listed ashwagandha contraindication. Sharma 2018 showed ashwagandha raising thyroid output in subclinical hypothyroid patients, which is the wrong direction for an already-overactive thyroid, and LiverTox lists it as a likely cause of clinically apparent liver injury.

On TRT without estradiol monitoring, or with unexplained high PSA

Ashwagandha

Those are listed tongkat ali contraindications, alongside hormone-sensitive cancer. Adding an androgen-availability lever on top of exogenous testosterone without monitoring is the scenario its report tells you to avoid.

Both the stress load and the androgen numbers look wrong

Tie

Neither one alone. The mechanisms are complementary, so run ashwagandha through its 8-week window first, since stress suppression of androgen tone is common and the cheaper fix may be enough. Add tongkat ali in the morning only if the labs and libido stay flat.

Pregnant, nursing, or trying to conceive

Tie

Neither, and this is not a hedge. Pregnancy and breastfeeding are hard avoidance on ashwagandha, with LactMed reporting no valid lactation safety data. EFSA 2021 explicitly excluded pregnant and lactating women from its tongkat ali assessment because safety was not established.

Research Highlights

Mechanism Difference
These two herbs are complementary, not redundant. Ashwagandha is a withanolide-rich root extract that damps HPA-axis output and lowers cortisol while modulating GABA-A signaling, with secondary thyroid and androgen effects.Tongkat ali works at the far end of the same system: quassinoid and glycosaponin effects on SHBG binding, LH signaling and free testosterone availability, plus cortisol tone. Cortisol is the only shared target. One turns the stress signal down, the other frees up the androgen already there.
Safety Comparison
The contraindication lists barely overlap, which makes safety a sorting question rather than a ranking one. Ashwagandha is out for hyperthyroidism, Graves' disease, current or past liver disease, thyroid hormone therapy, sedatives and immunosuppressants, and LiverTox lists it as a likely cause of clinically apparent liver injury.Tongkat ali is out for hormone-sensitive cancer, unexplained high PSA, TRT without estradiol monitoring, and anyone under 18. Pregnancy and nursing rule out both. Ashwagandha also carries mood blunting above 600 mg/day; tongkat ali carries insomnia when dosed in the evening.
Cost Comparison
Ashwagandha runs $15 to $30 a month at 300 mg KSM-66 twice daily. Tongkat ali runs $20 to $40 a month for verified Physta or LJ100, with the 200 mg/day clinical protocol sitting at the low end. Both priced 2026-09-07, retail.The bands overlap enough that price should not decide this. What matters is the floor underneath them. Generic ashwagandha root powder at $5 to $15 carries adulteration risk, and unverified bulk tongkat ali carries active-marker and heavy-metal uncertainty.
Access
Both are ordinary over-the-counter supplements, and both are only as good as their standardization. Ashwagandha has three trial-backed extracts: KSM-66 for broad daytime use, Sensoril for sleep, Shoden when pill burden matters.Tongkat ali is stricter. Its report marks purity verification as required, because only Physta and LJ100 match the published trials. Abubakar 2018 used DNA barcoding and HPLC on commercial products to make that point. Buying the ingredient name rather than the extract name is how people end up testing nothing.
Editorial Verdict
Ashwagandha scores 6.8 and tongkat ali 7.0, a gap too small to act on, so the complaint decides. Take ashwagandha when stress, anxiety or sleep is the problem: 7.5, 7.5 and 6.5 against 6.5, 4.5 and 4.8.Take tongkat ali when testosterone, libido or energy is the problem: 6.5, 6.3 and 6.0 against 6.5, 5.5 and 3.5. Mood is a genuine 6.0 tie and the mechanisms are complementary, so stacking is reasonable there. Neither effect survives stopping.

Frequently Asked Questions

Is ashwagandha or tongkat ali better for testosterone?: Tongkat ali. Both score 6.5 on the hormonal subrating, so the tie breaks on evidence. Leisegang 2022 pooled five randomized trials showing improved total testosterone, strongest in hypogonadal men, and Tambi 2012 reported 90.8% normalization after 200 mg/day for a month. Ashwagandha's hormonal anchor is a crossover study whose numbers its own report tempered.
Is ashwagandha or tongkat ali better for stress and anxiety?: Ashwagandha, and it isn't close. Stress resilience 7.5 against 6.5, anxiety 7.5 against 4.5. Arumugam 2024 pooled nine trials and 558 participants showing lower perceived stress, anxiety and cortisol. Tongkat ali has no anxiety-specific trials, and it can feel activating in an already anxious person.
Can I take ashwagandha and tongkat ali together?: Yes, and the mechanisms support it. Ashwagandha damps HPA-axis output and cortisol from the top. Tongkat ali frees testosterone from SHBG at the other end. Cortisol is their only shared target, so they're complementary rather than redundant. Add the second one at its listed dose, keep tongkat ali in the morning, and change one variable at a time.
How long before I know if either one is working?: Both give a first noticeable change in about a week, which means nothing. Ashwagandha's assessment window is 8 weeks and full effect lands around week 8. Tongkat ali reaches full effect around week 4 but its assessment window is 12 weeks. Judge at 8 and 12 respectively, not before.
Which one is cheaper?: Ashwagandha, barely. $15 to $30 a month at 300 mg KSM-66 twice daily against $20 to $40 for verified Physta or LJ100, both priced 2026-09-07 at retail. A $5 to $10 difference should not decide this. Going below either band buys unverified material, not a discount.
Who should avoid ashwagandha?: Anyone pregnant, breastfeeding, or trying to conceive without clinician guidance. Anyone with hyperthyroidism, Graves' disease, or current or past liver disease.Also anyone on thyroid hormone therapy, sedatives or benzodiazepines, or immunosuppressants, and anyone with a nightshade allergy. Don't run it continuously past 8 to 12 weeks without a break.
Who should avoid tongkat ali?: Anyone pregnant, nursing, or under 18. Anyone with hormone-sensitive cancer, unexplained high PSA or prostate symptoms, or active liver disease without monitoring.Anyone on TRT without estradiol and symptom monitoring should not add it either. EFSA 2021 did not establish safety for Physta because of animal genotoxicity findings, which is a regulatory flag rather than a clinical-dose harm signal.
Do the effects last after I stop?: No, on either. Tongkat ali's own report says effects wash out after stopping and that it rents a hormonal nudge rather than rebuilding the HPG axis. Ashwagandha scores 2.5 out of 5.0 on durability against tongkat ali's 2.2. Plan for cycling rather than a permanent fix, and ashwagandha in particular wants a break past 8 to 12 weeks.

Evidence Sources

Meta-analysis Effects of Ashwagandha on stress and anxiety: systematic review and meta-analysis, EXPLORE (2024) 9 RCTs, n=558; reduced perceived stress, anxiety, and serum cortisol versus placebo.
Meta-analysis Safety and efficacy of Withania somnifera for anxiety and insomnia: systematic review and meta-analysis, Human Psychopharmacology (2024) 5 RCTs, n=254; reduced HAM-A anxiety scores and improved several sleep parameters, with high heterogeneity.
Meta-analysis Effects of Ashwagandha on Mental Health in Adults: systematic review and dose-response meta-analysis, Complementary Therapies in Medicine (2026) 22 RCTs, n=1391; improvements in stress, anxiety, and depression, with dose and duration effects and low-certainty limitations.
RCT Adaptogenic and anxiolytic effects of ashwagandha root extract in healthy adults, Cureus (2019) Dose-ranging RCT; lower perceived stress, HAM-A scores, cortisol, and improved sleep quality.
RCT Ashwagandha root extract in insomnia and anxiety: randomized placebo-controlled study, Cureus (2019) Sleep and anxiety RCT with objective and subjective sleep outcomes.
RCT Withania somnifera supplementation on muscle strength and recovery: randomized controlled trial, JISSN (2015) Resistance-training RCT; supports strength, recovery, and training-adaptation benefits.
RCT Ashwagandha root extract in subclinical hypothyroid patients, Journal of Alternative and Complementary Medicine (2018) Double-blind RCT; TSH, T3, and T4 normalization in subclinical hypothyroid patients. Also the reason hyperthyroid users should avoid it.
Guideline LiverTox: Ashwagandha, NCBI Bookshelf (2024) NIH hepatotoxicity monograph; ashwagandha listed as likely cause of clinically apparent liver injury.
Meta-analysis Eurycoma longifolia improves serum total testosterone in men: systematic review and meta-analysis, Medicina (2022) Nine studies reviewed, five RCTs pooled; total testosterone improved, strongest support in hypogonadal men.
RCT Standardised water-soluble extract of Eurycoma longifolia as testosterone booster for late-onset hypogonadism, Andrologia (2012) 76 men with late-onset hypogonadism; 200 mg/day for 1 month; 90.8% showed normal testosterone after treatment.
RCT Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects, JISSN (2013) 63 moderately stressed adults; 200 mg/day for 4 weeks; cortisol down, testosterone-to-cortisol profile and mood state improved.
RCT Eurycoma longifolia and concurrent training in androgen deficiency of aging males, Maturitas (2021) Six-month double-blind RCT in 45 men; extract plus concurrent training improved erectile function and total testosterone.
Systematic review Do testosterone boosters really increase serum total testosterone? systematic review, International Journal of Impotence Research (2024) 52 studies across 27 proposed boosters; Eurycoma longifolia categorized as possibly effective in late-onset hypogonadism and in healthy men.
Guideline Safety of Eurycoma longifolia Jack root extract as a novel food, EFSA Panel on Nutrition, Novel Foods and Food Allergens (2021) Safety not established for Physta due to positive genotoxicity findings; pregnancy and lactation excluded.

Glossary

Quick reference for the medical and technical terms used in this comparison.

HPA axis Hypothalamic-Pituitary-Adrenal Axis: The body's central stress-response system, which regulates cortisol output. Ashwagandha's main target.
SHBG Sex Hormone-Binding Globulin: A blood protein that binds testosterone and lowers how much of it is free and usable. Tongkat ali's main target.
LH Luteinizing Hormone: The pituitary signal that tells Leydig cells in the testes to produce testosterone. Part of tongkat ali's pathway.
KSM-66 KSM-66 Ashwagandha: Root-only ashwagandha extract, commonly standardized to 5% withanolides. The best default evidence base for daytime use.
Sensoril Sensoril Ashwagandha: Root-and-leaf ashwagandha extract, typically more sedating and more sleep-oriented than KSM-66.
Physta Physta Eurycoma Extract: Standardized hot-water Eurycoma longifolia root extract used in several of the human trials cited here.
LJ100 LJ100 Tongkat Ali Extract: A 100:1 hot-water tongkat ali extract used in commercial standardized products.
Withanolides Withanolides: The steroidal lactone compounds considered the major actives in ashwagandha, and what standardized extracts are measured against.
Eurycomanone Eurycomanone: The main quassinoid marker compound used to standardize tongkat ali extracts.

Nick Urban Health Optimization Researcher & CHEK Holistic Lifestyle Coach Level 2

I cycle ashwagandha on and off through the year, mostly during higher-stress periods, and I've only taken tongkat ali inside testosterone support formulas rather than on its own

Reviewed Sep 7, 2026 · next review Dec 6, 2026

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