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Not medical advice. The Atlas is not a substitute for a clinician who can examine you.

Dosing, Timing & Standardization

How to Read a Label and Hit a Clinically-Effective Dose

Evidence grade 3 of 5, Mixed. Read how the Atlas grades evidence.

The written rationale for this grade is still being prepared.

FDA
Not FDA evaluated; standardization is voluntary

Reference only. Not medical advice.

What can go wrong

Underdosing wastes money and falsely 'disproves' an ingredient for the user. Overdosing concentrated extracts raises the chance of side effects. Because supplements are not premarket-tested, label claims can be inaccurate; third-party certification (USP, NSF, Informed Choice) is the practical safeguard.

This is something to take to a clinician. The Atlas can tell you what is known about dosing, timing & standardization in general. It cannot tell you what is happening in your body, and the difference matters most for exactly the symptoms that bring people to this page.

A practical literacy protocol: match the product to the dose and standardization used in the positive human trials, not just the ingredient name. For ashwagandha that means a root extract around 300-600 mg/day standardized to withanolide content (e.g. KSM-66); for tongkat ali, ~200 mg/day standardized to roughly 0.8-2% eurycomanone. Timing matters far less than hitting the studied dose of a verified extract.

The dose and the standardization are the product.

What people take it for

These are the reasons people give for taking it. They are not effects it has been shown to have.

  • Choosing a supplement that matches trial doses
  • Decoding 'proprietary blend' labels
  • Avoiding underdosed products

How it is supposed to work

Botanical potency depends on the part used (root vs leaf), the extraction method, and the standardized concentration of the active marker. The trials showing testosterone effects used specific standardized extracts at specific doses; a product naming the same herb but at a lower dose or different standardization is not equivalent. Reading the supplement facts panel for milligrams per active and for third-party verification is the core skill.

Same herb, different molecule load

Two tongkat ali capsules can differ tenfold in eurycomanone content. Market surveys of Malaysian products found many failed to reach recommended eurycomanone levels while a few exceeded them, so 'tongkat ali 200 mg' on a label tells you almost nothing without the standardization figure.

What has to be monitored

The bloodwork this needs, and the reason it belongs with a clinician rather than a website.

  • Confirm per-ingredient mg on the supplement facts panel
  • Prefer third-party tested products

What people get wrong

  • Often saidThe ingredient name on the front is what matters

    ActuallyThe dose and the standardized active percentage are what matter. 'Contains ashwagandha' can mean a sub-therapeutic dust.

  • Often saidTiming supplements precisely boosts results

    ActuallyFor these agents, consistent daily dosing at the studied amount matters far more than the hour you take it.

Who profits, and who pushes back

Nobody is named here yet, because we have not done that work on this entry. Read that as unfinished. Somebody almost certainly sells this, and somebody almost certainly disputes it. Assume both until we have checked.

At a glance

Ashwagandha studied dose
300-600 mg/day root extract
Tongkat ali studied dose
~200 mg/day, ~0.8-2% eurycomanone
Key label word
Standardized to [active] %

What this entry does not yet cover

What follows is unfinished work on our side, not a finding about Dosing, Timing & Standardization. A short entry is not a safe entry.

  • Timeline. We have not built the dated record of research and regulatory events.
  • Cost and market. We have not documented what it sells for or who sells it.
  • Supply chain. We have not mapped where it is made.
  • Who uses it. We have not documented the user groups.
  • What could change. No forward-looking summary yet.
  • How it compares. We have not set it against the alternatives.
  • Children and teenagers. We have not checked what is known about younger people.
  • Where we land. We have not taken a position on this yet.

Sources

The studies below are named and described, but not linked. You cannot open them from here and check our reading against them, which means this page is our summary of the literature rather than a document you can verify. Weigh it accordingly until the links exist.

The studies that matter

  • Eurycoma longifolia meta-analysis (total testosterone)2022

    Pooled trials, commonly ~200 mg/day standardized extract, showed a significant increase in total testosterone

  • KSM-66 ashwagandha RCT2019

    600 mg/day standardized root extract raised testosterone vs placebo over 8 weeks