Science

Tongkat Ali and Libido: What Human Research Shows

A cautious review of human Tongkat Ali studies that measured sexual-function outcomes, with material, population, and product-boundary limits for dried root tea.

Two cups of amber Tongkat Ali root tea with dried root slices on a wooden table

Does Tongkat Ali increase libido? Some small human studies of defined Eurycoma longifolia-containing supplements measured sexual-function outcomes. Their materials, populations, and co-interventions vary, so they don't establish a libido effect for dried root tea or this specific product batch.

Direct Answer

“Libido” is a subjective outcome influenced by physical health, mental health, relationship factors, sleep, medicines, and expectations. A study of a specific supplement can answer a narrow question about that intervention and population — it can’t turn Tongkat Ali root tea into a treatment for low desire, erectile difficulty, infertility, or a hormone disorder. Standardized extract study, dried root tea, and this product batch remain three different things throughout.

What Selected Human Studies Measured

StudyYear/sourceParticipants/designStudy materialDose/durationOutcome scopeImportant limitation
Physta® + Polygonum minus trial2014Men 40–65; randomized, double-blind, placebo-controlled, 26 completed300mg combination: Physta® water extract + Polygonum minus12 weeksQuestionnaires on sexual performance, erection hardness, moodTested a combination, not Tongkat Ali alone and not root tea
ADAM trial202145 men with androgen deficiency of aging males; four-arm RCTE. longifolia supplement; specification not stated in the PubMed record reviewed200mg, 6 months, concurrent-training arm includedErectile function index, Aging Male Scale, total testosteroneTraining and supplement were combined in the strongest-result arm; not a root-tea study
Idiopathic male-infertility study2010Sub-fertile male partners; follow-up reportProprietary standardized water-soluble root extract200mg daily; follow-up over 9 monthsSemen parameters and pregnancies, not a direct libido outcome350 started, 75 completed one cycle; not evidence for tea or a libido treatment

What These Studies Don’t Show

They don’t establish that our dried root slices improve libido, erectile function, or fertility; treat erectile dysfunction; have a clinically validated sexual-health dose; work within a specified number of weeks; are equivalent to a studied extract or combination product; or are safe for every person or alongside medicines. The published outcomes also aren’t interchangeable — a questionnaire score, a hormone lab value, a semen parameter, and a subjective desire measure are different endpoints.

Product and Batch Distinction

We sell dried root slices for tea. We don’t publish a batch-specific COA, DNA identification, eurycomanone concentration, or clinical trial of this batch, so we can’t connect a cup of tea to the intervention in any study above. See Root Slices vs Extract and Product Testing Status.

When Medical Assessment Matters

Persistent changes in desire, erectile function, or fertility can have many causes and may warrant clinical assessment. Don’t use an herbal tea instead of evaluation for cardiovascular, endocrine, medication-related, mental-health, or relationship concerns. People using medicines, with hormone-sensitive conditions, or who are pregnant, breastfeeding, or trying to conceive should seek qualified advice before use.

FAQ

Does Tongkat Ali increase libido? Some small human studies of defined Eurycoma longifolia-containing supplements measured sexual-function outcomes, but their materials and co-interventions vary. They do not establish a libido effect for dried root tea or this product batch.

Is Tongkat Ali a treatment for erectile dysfunction? No. This page summarizes research boundaries; it does not establish a treatment for erectile dysfunction or replace clinical assessment of sexual-health symptoms.

Evidence Index · Tongkat Ali and Testosterone · Tongkat Ali and Drug Interactions · Tongkat Ali for Women · Red Tongkat Ali Safety


Educational information, not medical advice. This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.

Frequently Asked Questions

Some small human studies of defined Eurycoma longifolia-containing supplements measured sexual-function outcomes, but their materials and co-interventions vary. They do not establish a libido effect for dried root tea or this product batch.
No. This page summarizes research boundaries; it does not establish a treatment for erectile dysfunction or replace clinical assessment of sexual-health symptoms.

Scientific research and product-specific testing answer different questions. See Product Batch Testing.