Ingredient
Bilberry leaf powder in CogniHoney: What It Is, What the Research Shows and the Safety Flags
Bilberry leaf powder is the sixth line in the list given to this site for the sibling pack. No source we read supports a memory claim for it. NCCIH says bilberry has not been clearly shown to help any health condition, and most research is on the fruit, not the leaf. No amount is printed.
Written by the CogniHoney label deskUpdated
Ingredient01
What is bilberry leaf powder?
Powder from the leaf of bilberry, a European relative of the blueberry.
Bilberry is a European relative of the blueberry. Most of what has been studied concerns the fruit. The CogniHoney list names the leaf, ground to a powder, which is a different material with a different research record. No amount, no extract ratio and no standardization are given.
That distinction is easy to lose on a label. A bottle that says "bilberry" invites the reader to think of the berries and the studies on them. The list given to this site says leaf, and the studies do not follow.
| Name in the list | Bilberry leaf powder |
|---|---|
| What it is | Powder from the leaf of bilberry, a European relative of the blueberry. Most research is on the fruit, not the leaf. |
| Amount in CogniHoney | Not printed in any material given to this site; confirm on your bottle |
| Amount used in research | NCCIH: fruit extract up to 160 mg a day for up to 6 months was used in research. No dose for leaf powder was found. |
| What research found | NCCIH: bilberry has not been clearly shown to help any health condition; the most rigorous studies found no night-vision benefit. No source we read supports a memory claim for the leaf. |
| Main caution | NCCIH: bilberry leaves may be unsafe when consumed in high doses or for long periods. Little is known in pregnancy and breastfeeding. |
| Medicines to ask about | NCCIH says to check with a provider before use if you take any medicine. Bilberry is traditionally used for blood sugar, so ask about diabetes medicines. |
If your bottle says bilberry extract or fruit, the list we hold was wrong on this line. Read the bottle and let it correct us.
Ingredient02
Does bilberry leaf help memory?
No source we read supports a memory claim for bilberry leaf.
NCCIH says bilberry has not been clearly shown to be helpful for any health condition, and that the most rigorous studies found no improvement in night vision in healthy people (NCCIH, Bilberry). Night vision is the best-known traditional claim for the fruit, so a negative result there is a notable one.
For memory we found nothing for the leaf, the fruit or an extract of either. NIA recommends no vitamin or supplement for preventing cognitive decline and says other supplements are untested for cognition (NIA, Diet and Prevention of Alzheimer's). Bilberry is one of those untested ones.
It may be in a memory capsule for reasons of tradition or marketing. The list does not say, and we will not guess.
Ingredient03
What amount did studies use?
Fruit extract up to 160 mg a day for up to 6 months was used in research. No dose for leaf powder was found.
| Point | Research | CogniHoney list |
|---|---|---|
| Part of the plant | Fruit | Leaf |
| Form | Extract | Powder |
| Amount | Up to 160 mg a day | Not printed |
| Length | Up to 6 months | Not applicable |
| Outcome | Not clearly helpful for any condition | No trial |
Source: (NCCIH, Bilberry). Six months is about 180 days. At two capsules a day, that is roughly 12 bottles of 30, which gives a sense of the time scale only. A leaf powder is not the fruit extract studied, so trial amounts cannot be applied.
Ingredient04
Is bilberry leaf safe?
NCCIH says bilberry leaves may be unsafe when consumed in high doses or for long periods.
The fruit is considered safe in food amounts, but leaves are a separate matter (NCCIH, Bilberry). Little is known about use in pregnancy and breastfeeding, so anyone pregnant or nursing should ask a physician before taking any supplement.
Without an amount, nobody can say whether a capsule counts as a high dose. Without a duration limit on the bottle, nobody can say how long is too long. These are open questions rather than reassurances.
Ingredient05
Does it matter with medicines?
NCCIH says to check with a provider before use if you take any medicine.
Bilberry is traditionally used for blood sugar, so people who take diabetes medicine should ask whether it could add to their treatment (NCCIH, Bilberry). We found no source that quantifies an interaction, and we state none.
- Tell your pharmacist about bilberry along with the rest of the list.
- Keep any regular glucose checks going and note the start date of the capsules.
- Ask before using it with other plant products that also affect blood sugar.
CogniHoney capsules: 30 on the bottle count2, 3 or 6 bottles · 60-day guarantee per seller materials
See packsIngredient06
Why do fruit studies not carry over to the leaf?
Because a plant's parts are different materials, and a result for one says nothing certain about another.
NCCIH treats the two separately: the fruit is considered safe in food amounts, while the leaves may be unsafe in high doses or over long periods (NCCIH, Bilberry). That split is the plainest reason to keep them apart. A safety statement for berries is not a safety statement for a leaf powder, and a research amount for a fruit extract is not a research amount for a powder.
It also works the other way. A buyer who reads a hopeful line about bilberry fruit and then sees "bilberry leaf powder" on a list should not assume the two are the same. The reverse caution applies too: the leaf warning does not describe the berries in a fruit bowl. Read the part of the plant named on the bottle, and read the sources for that part.
Ingredient07
What is missing from the picture?
Amount, form and reason.
The render shows the bottle front only, and we hold no panel. So we do not know how much leaf powder a capsule holds, whether it is a standardized material or a plain grind, or why it was chosen. Two similar-sounding lines in the list, "ginkgo biloba powder" and "bilberry leaf powder", share the same plain-powder form, in contrast to the extracts used in trials of ginkgo and bacopa. A powder and an extract are not interchangeable, and results from one cannot be borrowed for the other.
Ingredient08
What should you ask your pharmacist or doctor?
- Is it the leaf, and how much is in a capsule?
- Does it affect my blood-sugar medicine?
- Is long-term use sensible?
- I am pregnant or breastfeeding. Should I avoid it?
See medicine safety for the list as a whole.
FAQ09
CogniHoney questions people ask
Is bilberry the same as blueberry?
No. Bilberry is a European relative of the blueberry.
Is bilberry leaf safe?
NCCIH says leaves may be unsafe in high doses or for long periods.
Does bilberry help memory?
We found no source that supports it. NCCIH says bilberry is not clearly helpful for any condition.
Does bilberry improve night vision?
NCCIH says the most rigorous studies found no night-vision benefit in healthy people.
What is the difference between bilberry fruit and leaf?
Research covers the fruit. The list names the leaf, so fruit studies do not apply.
Can bilberry affect diabetes medicine?
It is traditionally used for blood sugar. Ask your prescriber before combining them.
Is bilberry safe in pregnancy?
NCCIH says little is known in pregnancy and breastfeeding. Ask a physician first.
Who wrote this10
Written and reviewed by
Pages built from the label, the seller checkout and linked NIH, FDA, FTC, CDC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. authorized retailer of CogniHoney. It is not the manufacturer. We earn money when you buy through our order links.
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Read the bottle you receive, check your medicines with a pharmacist (blood thinners, thyroid, statins and diabetes medicines matter here), then pick a pack. The guarantee is 60 days per the seller's materials; confirm the live wording at checkout.
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- 60-day guarantee (confirm live)
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