The ashwagandha dosage used in most clinical trials is 300 to 600 mg a day of a concentrated root extract, taken for 8 to 12 weeks. That is extract, not plain root powder. Matching it with milled root takes several grams, which is the single most misunderstood point about this ingredient.
Extract and root powder are not the same dose
Start here, because almost every dosing question traces back to it.
Clinical trials on ashwagandha overwhelmingly use a concentrated root extract standardised to a stated strength, usually 2.5% or 5% withanolides. When a study reports 600 mg, it means 600 mg of that extract.
Plain root powder is the whole milled root and is far less concentrated. To get a comparable amount of the active fraction you are looking at several grams, roughly a teaspoon, not a small capsule.
So a product listing 600 mg of root powder alongside trial results is comparing two different things. Neither form is wrong; they are simply dosed differently, and the label has to say which it is.
| Form | Typical daily amount | Notes |
|---|---|---|
| Standardised extract | 300 to 600 mg | What the trials used |
| Root powder | 3 to 6 g | Traditional form, much less concentrated |
| Extract at 5% | Lower end of the range | Stronger per milligram than 2.5% |
Splitting the dose and timing it
Both once daily and twice daily appear in the research and neither is clearly better. Splitting it, morning and evening, is common and tends to reduce the digestive upset some people get from a single larger dose.
On timing, the practical guide is what you want from it.
- For sleep, evening, an hour or two before bed.
- For stress through the day, morning, or split.
- With food either way. It is easier on the stomach and it is how most trials administered it.
How long before it does anything
Weeks. Most trials measure at 8 to 12 weeks, and the benefits reported are the state at the end of that window, not day three.
Some people notice sleep changes sooner, within a week or two. Stress effects generally take longer. Anyone judging ashwagandha after four days is judging nothing, and that is the most common reason people conclude it did not work.
How long to stay on it
Safety data past about three months is limited. That is an absence of evidence rather than a finding of harm, but it is why cycling is commonly suggested: several weeks on, a break, then resume if it is helping.
If it has done nothing after twelve weeks at a proper dose of a proper form, more time is unlikely to change that.
Reading a label properly
Four things tell you whether a dose figure means anything.
- Form. Extract or root powder. If it does not say, assume powder.
- Strength. A standardised extract states its percentage. An extract with no percentage is not standardised.
- Plant part. Root, or root and leaf. The research is on root. Leaf is cheaper.
- Extract ratio. Something like 10:1 tells you concentration but not the active content, which is what the percentage is for.
Safety information, including who should not take it at all, is in our note on ashwagandha side effects. What the evidence actually supports is in ashwagandha benefits.
Dosing questions a manufacturer has to answer
If you are formulating rather than taking it, the dose decision is really a specification decision. A 300 mg capsule of 5% extract and a 300 mg capsule of 2.5% extract deliver different amounts of the fraction the research is about, so the strength has to be fixed and verified per lot rather than assumed from a supplier’s product page.
The other decision is plant part, and it should be in writing on the purchase order. Root only material costs more and is what the evidence base rests on.
Sourcing ashwagandha in bulk
We export ashwagandha root powder and ashwagandha extract from India. Root powder minimum order is 25 kg; extract is 10 kg, the lowest minimum in our catalog, because extract buyers formulate in smaller quantities.
Forms are root powder, extract at 2.5% and 5%, water soluble, full spectrum and certified organic. Every lot ships with a Certificate of Analysis stating plant part and strength alongside heavy metal, microbial and pesticide limits. Free sample first, quote within 24 hours.
Specifications, for buyers who order to a number
Order on plant part, strength and mesh, with purity limits to your destination market’s pharmacopoeia. Strength is the figure your dose claim rests on, so it is confirmed on the Certificate of Analysis for the lot you receive rather than taken from a brochure range. Tell us what your label states and we will confirm what we can supply against it before you commit.
Frequently asked questions
What is the correct ashwagandha dosage?
300 to 600 mg a day of a standardised root extract is what the trials use. If you are taking plain root powder instead, a comparable amount is several grams, because powder is far less concentrated.
Should I take ashwagandha morning or night?
Evening if you want it for sleep, morning or split if you want it through the day. Both appear in the research. Take it with food either way, which is gentler and matches how trials administered it.
How long before ashwagandha works?
Most trials measure at 8 to 12 weeks. Sleep effects sometimes show within a week or two; stress effects take longer. Judging it after a few days is the most common mistake.
Can I take more than 600 mg?
There is no evidence that more helps, and the documented liver injury reports involve higher intakes. Stay inside the studied range.
Do you supply standardised ashwagandha extract?
Yes, at 2.5% and 5%, plus water soluble and full spectrum, with strength confirmed per lot. Minimum order 10 kg on extract and 25 kg on root powder, with a free sample and a quote within 24 hours.
Specs change with the crop, the season and the grade. Ask our export desk for a current lab report, the minimum order and a price to your port, and we will come back within 24 hours.