Dong quai: what is the recommended daily dose?

There is no single daily dose of dong quai that suits everyone. Supplement labels may state different amounts, but there is no official established range and no recognised reference dose. That variation is not arbitrary: it depends on the form of the product (powdered root or extract), the concentration and standardisation of the extract and, above all, on the fact that the scientific evidence for this plant is weak and inconsistent. Giving you an exact number would be dishonest — what makes sense is to explain how to interpret what is on the pack, what the studies actually tested and how to decide safely.

Before we go further, one essential point: dong quai is a plant, not a nutrient with a reference dose. Unlike vitamins and minerals, it has no official recommended daily dose and no defined maximum value. Any number you see on a label is the manufacturer's estimate, based on traditional use and preliminary studies — not a public health recommendation. And, as we will see, the available evidence does not allow us to say that one dose works better than another.

What the science says about the dose of dong quai

The most recent systematic review of oral herbal supplements for menopausal symptoms analysed 30 randomised trials and identified 19 distinct herbal interventions. The two trials that used black cohosh and dong quai found no measurable effects on the symptoms assessed ¹. This matters for framing the dose question: if the evidence of benefit is nil or very weak, increasing the dose does not resolve the uncertainty — it only increases exposure to a plant whose safety profile is also not well characterised.

An earlier systematic review, which assessed herbal products for menopausal symptoms, included only one trial with dong quai among 18 identified studies ². And a review of botanical dietary supplements for menopause, which required controlled trials lasting at least 6 weeks, assessed several plants, but the available abstract does not detail the results for dong quai ³. The pattern is clear: the studies are few, small and with inconsistent results.

There is also research into mechanisms — for example, a review on Angelica sinensis (the scientific name of dong quai) and ischaemic stroke describes anti-inflammatory, antioxidant and antiplatelet effects in experimental models ⁴. But note: these are mechanistic studies, many in animal or cell models, and they do not establish an effective dose in healthy humans. Do not draw conclusions about the dose from them.

How to read the label: per gummy versus per serving

The most common mistake is looking at the number on the front of the pack and assuming it is the daily dose. The real dose is in the nutrition table, and most supplements state the amount per serving, not per individual gummy. If the serving is two gummies and each gummy has 250 mg, the dose per serving is 500 mg — and that is the figure you should compare with the range you see on labels.

Another frequent error is miscounting servings. If the label says "1 to 2 gummies per day" and each gummy has 300 mg, the daily dose could be 300 mg or 600 mg, depending on how many you take. It sounds simple, but this is where many people slip up, especially with packs that show a large picture of several gummies on the front and then state a smaller serving.

A practical tip: read the "ingredients" and "directions" sections before buying. If the daily dose is expressed in milligrams of extract, check whether standardisation is mentioned (for example, "extract 4:1" or "0.1% ferulic acid"). Without that reference, the milligram number is almost useless for comparing brands — two products with the same weight can contain very different amounts of active compounds.

What the percentage on the label means — and what it does not

In food supplements, the percentage next to vitamins and minerals refers to the nutrient reference value (%NRV), that is, the amount that covers the needs of an average adult. In the case of dong quai, that percentage does not appear, because it is not an essential nutrient with an established reference value. If you see a "%NRV" in the table, it is likely you are looking at another ingredient in the formula, such as vitamin B6 or iron.

That means the percentage does not tell you whether the dose of dong quai is enough to have an effect. The percentage only tells you whether you are getting a minimum amount of a nutrient — not whether you are getting a "therapeutic dose" of dong quai, a concept which, incidentally, the evidence does not support.

Comparing doses: what the studies used and what a label provides

Because the evidence is weak, there is no reference dose tested in robust trials. The HALT study included dong quai in a multi-botanical blend given in four capsules a day ⁵, but the exact amount of dong quai is not specified in the abstract. This is not a dose recommendation; it is simply what was studied.

Hormonal Balance Gummies provide 100 mg of dong quai extract per serving of 2 gummies. The dose on the label is the one to follow. The evidence of benefit is, as we have seen, very limited.

If you see a "%NRV" in the table, it is likely you are looking at another ingredient in the formula. In Hormonal Balance Gummies, for example, vitamin B6 provides 1.5 mg per serving of 2 gummies, which corresponds to 107% of the EU reference intake ⁶, and zinc 5 mg (50% of the NRV) ⁶. These values say nothing about the amount of dong quai — they simply show that the percentage refers to nutrients with a reference value, not to the plant.

Context	Amount of dong quai	What this means
Typical range on supplement labels	500 mg to 1,500 mg per day	Manufacturer's estimate, with no firm regulatory basis
Trials that included dong quai (e.g. HALT)	Amount not specified in the abstract; given in four daily capsules of a multi-botanical blend	Doses studied, not instructions for use
Hormonal Balance Gummies (TuttiBear)	100 mg of extract per serving of 2 gummies	Label dose; follow the stated directions

How much is too much? The limit of "more"

With dong quai, more is not better. The evidence is weak, but what exists suggests that very high doses may increase the risk of side effects, such as gastrointestinal discomfort or skin reactions, without bringing additional benefit. Beyond a certain point, the body simply does not use the excess, and what is left over can be a problem rather than a help.

There is no official maximum value defined for dong quai, because it is not a nutrient with a defined toxic dose, and manufacturers' recommendations vary. If you feel you need more than the stated dose to get an effect, the answer is probably not to increase the dose — it is to talk to a healthcare professional.

It is also worth remembering that dong quai is not a fast-acting painkiller. If you are expecting quick relief, you will be disappointed. The effect, if it exists, appears after weeks, not days. And if it does not appear, increasing the dose will not speed up the process.

Dong quai in gummies: what changes with the dose

Gummies are a convenient way to take supplements, but they have their own quirks. First, the dose per gummy tends to be lower than that of a capsule, because the gummy has volume taken up by maltitol, pectin and water. That means you may need to take more gummies to reach the same amount as a tablet.

Second, gummies have to be chewed. There are no studies comparing the absorption of dong quai in gummies with that of capsules or tablets, so it is not possible to claim equivalence or superiority. What is known is that the bioavailability of plant extracts can vary with the pharmaceutical form, and the dose stated on the label already takes that into account.

Finally, gummies contain polyols (maltitol), and excessive consumption may have a laxative effect — this is stated in the warnings on the products themselves. If you have a sensitive gastrointestinal tract, start with the lowest stated dose and observe how you feel.

If you have diabetes or are watching your weight, also check the amount of sugar or polyols per gummy on the label — if it is high, you may prefer another form. It is not a reason to avoid gummies altogether, but it is a factor to consider.

How long before you know if it makes a difference

There is no robust evidence on how long it takes for any effects to appear; the most recent systematic review found no measurable effects in the trials that used black cohosh and dong quai ¹. If you feel nothing after a few months, it is likely the supplement is not making a difference for you — and the answer is not to increase the dose, but to reassess whether it is worth continuing.

It is also important to be realistic about what to expect. Dong quai is traditionally used for menstrual discomfort, but the evidence is weak. The most recent systematic review found no measurable effects in the two trials that used black cohosh and dong quai ¹. If you are taking it for a specific problem, such as severe cramps or irregular cycles, do not expect a radical transformation. If there is no improvement, talk to your doctor — there may be another cause that needs treatment.

When the answer is "let someone else decide"

There are situations where you should not choose the dose yourself. If you are pregnant or breastfeeding, do not take dong quai without medical advice — there is not enough safety data at this stage. The same applies to children, for whom supplementation is not recommended without paediatric supervision. In case of pregnancy, breastfeeding, illness or taking medicines, talk to a healthcare professional before use.

If that happens, do not wait and see: contact your doctor, pharmacist or the poisons information service in your country.

If you take anticoagulants, antiplatelet drugs or hormonal medications, talk to your pharmacist or doctor before starting. The review on Angelica sinensis describes antiplatelet effects in experimental models ⁴, but there is not enough data on drug interactions in humans. Do not assume that "natural" means "harmless". You can explore this topic further in the article on dong quai and drug interactions.

Also, if you have a hormonal condition, such as endometriosis or fibroids, or if you are undergoing fertility treatment, do not experiment on your own. The decision to take it or not should be made with someone who knows your history.

Finally, if you notice any adverse effect, such as nausea, diarrhoea, dizziness or a rash, stop taking it and seek advice. There is no "safe dose" for someone who has an adverse reaction.

How to decide in practice

In summary, the most honest and safest approach is this:

• Start with the lowest dose stated on the label of the product you choose, and never exceed the daily dose recommended by the manufacturer.
• Read the nutrition table and the directions carefully: check whether the stated amount is per gummy or per serving.
• Do not increase the dose if you feel no effects after a few months — reassess with a healthcare professional.
• If you take anticoagulants, antiplatelet drugs or hormonal medications, talk to your doctor or pharmacist before starting.
• If you are pregnant, breastfeeding or thinking of giving it to a child, do not do so without guidance from a healthcare professional.

To better understand what the research says about this plant, you can read the article on how dong quai works and the guide on dong quai: benefits and what it is for. If your question is about when to take it, see when to take dong quai.

Dong quai is a supplement with a long history of use, but modern science has not yet given it a clear verdict. The daily dose you will find on labels is an estimate based on tradition and preliminary studies, not a firm recommendation. Start with the lowest stated dose, observe how you feel, and do not be afraid to ask a professional. That is the most honest approach — and the safest.

Frequently asked questions

What is the recommended daily dose of dong quai?

There is no official daily dose of dong quai, because it is not a nutrient with an established reference dose. Supplement labels may state different amounts, but there is no official established range. The scientific evidence on benefits is weak, so the most sensible approach is to follow the dose stated on the label of the product you choose and not to exceed it.

Can I take dong quai every day?

You can, if the product label states a daily intake and you have no contraindications. However, because the evidence of benefit is limited, it is worth reassessing after a few months: if you notice no difference, it does not make sense to continue or to increase the dose. In case of pregnancy, breastfeeding, illness or taking medicines, talk to a healthcare professional first.

Do dong quai gummies have the same dose as capsules?

Not necessarily. The dose depends on the product and the concentration of the extract, not on the form. Gummies tend to contain less active substance per unit, because the volume is taken up by maltitol, pectin and water. There are no studies comparing the absorption of dong quai in gummies with that of capsules, so it is not possible to claim that they are equivalent. Always read the nutrition table.

What happens if you take too much dong quai?

There is no official maximum value defined for dong quai, and manufacturers' recommendations vary. Very high doses may increase the risk of gastrointestinal discomfort or skin reactions, without bringing additional benefit. If you notice adverse effects, stop taking it and seek advice.

Who should not take dong quai?

Pregnant women, breastfeeding women and children should not take dong quai without guidance from a healthcare professional. People who take anticoagulants, antiplatelet drugs or hormonal medications should also talk to their doctor or pharmacist first. The same applies to anyone with hormonal conditions such as endometriosis or fibroids.

How long does dong quai take to work?

There is no robust evidence on how long it takes for any effects to appear; the most recent systematic review found no measurable effects in the trials that used black cohosh and dong quai. If after a few months you notice no difference, it is likely that it is not working for you — and the answer is not to increase the dose, but to reassess with a healthcare professional.