Science

Tongkat Ali Dosage: What Human Studies Actually Used

A source-based record of doses used in selected human Eurycoma longifolia studies—and why extract milligrams are not a recommended dose for dried root-slice tea.

Dried Red Tongkat Ali root slices beside brewed herbal tea and a notebook — dosage research still life

What Tongkat Ali dose did human studies use? Selected studies used particular Eurycoma longifolia supplements at 200 mg or 400 mg per day for defined periods. Those study materials were not dried root-slice tea, and the reported milligrams are not a recommended or equivalent dose for this product batch.

Direct answer

Human-study dose is a description of what a paper tested, not a consumer instruction. The relevant details are the exact material, population, intervention, duration, and outcome. A milligram amount from an extract paper cannot responsibly be translated into grams, slices, cups, colour, or bitterness for an unassayed root tea.

The boundary for every table below is:

Standardized extract study ≠ dried root tea ≠ this product batch.

Selected human studies and reported doses

StudyYear / journalParticipants / designStudy materialReported doseDurationOutcome scopeLimitation
Leisegang et al.2022, MedicinaSystematic review: 9 studies reviewed; 5 RCTs in meta-analysisHeterogeneous, extract-dominant supplementation literatureVaries by included studyVariesPossible total-testosterone signal in menA review cannot define one universal dose or establish root-tea equivalence.
ADAM trial202145 men; four-arm randomized, double-blind, placebo-controlled studyE. longifolia supplement; extract specification not stated in the PubMed record reviewed200 mg6 monthsErectile-function and testosterone-related outcomesConcurrent training was part of the intervention for one arm; not a root-tea study.
Young-male training trial201940 young men; randomized placebo-controlled interventionE. longifolia supplement; extract specification not stated in the PubMed record reviewed200 mg daily8 weeksPerformance measures and urinary testosterone:epitestosterone ratioTraining was a co-intervention; urinary ratio did not significantly change.
Physta® crossover trial201413 male recreational athletes; double-blind placebo-controlled crossoverPhysta® standardized water extract400 mg daily6 weeks per regimen; 3-week washoutUrinary testosterone:epitestosterone ratio; liver and renal measuresSmall sample; the result concerns that defined extract, not tea.

Missing fields: Where a material specification is not stated in the PubMed record reviewed, it is shown as “not stated.” We do not fill in missing details from marketing summaries.

Why research dose is not a recommendation for root slices

To convert an extract dose into a root-tea serving, a source would need to provide:

  1. the tested extract’s verified composition;
  2. the chemical composition of the exact root batch;
  3. the yield from the specific brewing method;
  4. stability through heating and storage;
  5. absorption from the resulting drink; and
  6. human evidence connecting that exposure to the intended outcome.

We do not publish those data for RedTongkatAliMY root slices. We therefore do not state a clinical dose, cycle, testosterone dose, libido dose, or results timetable for them.

Traditional preparation is a different question

Our brewing guide describes a traditional food-preparation approach. It does not claim that the preparation reproduces any trial protocol or medical outcome. The guide’s slice count is not a conversion from an extract study.

Safety considerations

Short extract studies cannot establish long-term safety, safety with medicines, or safety for a different preparation. Do not use research dose as a reason to increase a root-tea amount. Review Safety, particularly if you take medicines or have a health condition.

Frequently Asked Questions

Selected human studies used particular supplements at 200 mg or 400 mg per day for defined periods. These were study-specific preparations, mainly extracts, and are not a recommended or equivalent dose for dried root-slice tea.
No. Converting an extract dose into slices would require matched batch composition, brewing yield, stability, absorption, and clinical evidence. Those data are not published for our root slices.

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