Ingredient
Green tea extract in CogniHoney: What It Is, What the Research Shows and the Safety Flags
Green tea extract (50%) is the last line in the list given to this site for the sibling pack. We found no source that supports a memory claim. LiverTox rates it a well-established cause of liver injury, though uncommon, and the list gives no amount, no meaning for the 50%, and no word on caffeine.
Written by the CogniHoney label deskUpdated
Ingredient01
What is green tea extract in a capsule?
A concentrated extract of green tea leaf, listed here as "Green tea extract (50%)".
A cup of green tea and a capsule of green tea extract are different things. The capsule concentrates the leaf into a much smaller volume, and that concentration is where the safety questions begin. NCCIH draws the line clearly: no safety concerns for green tea as a drink for adults, but liver injury reported mainly with extracts in tablet or capsule form (NCCIH, Green Tea).
The CogniHoney list prints "(50%)" and does not say what it refers to. It is often the share of polyphenols or catechins, but that is our reading and not a label fact. The list also does not say whether the extract contains caffeine. Green tea contains caffeine, so the question is fair.
| Name in the list | Green tea extract (printed 50%) |
|---|---|
| What it is | A concentrated extract of green tea leaf. The list prints '(50%)' and does not say what it refers to (often the share of polyphenols or catechins); it does not say if it has caffeine. |
| Amount in CogniHoney | Not printed in any material given to this site; confirm on your bottle |
| Amount used in research | Liver case reports involve about 140 mg to 1,800 mg of EGCG or extract a day; no amount is printed for this product. |
| What research found | NCCIH has no statement on cognition. LiverTox rates green tea extract a well-established cause of clinically apparent liver injury, usually 1 to 6 months after starting. |
| Main caution | Liver injury is uncommon but reported with extracts in capsule form; USP advises not taking it on an empty stomach and stopping for abdominal pain, dark urine or jaundice. It may contain caffeine. |
| Medicines to ask about | Can lower blood levels of atorvastatin and nadolol (NCCIH); may interact with other medicines. |
Whether the 50% means catechins, EGCG or something else, how much extract a capsule holds and whether caffeine is present are all unconfirmed in the sibling-pack list.
Ingredient02
Does green tea extract help memory?
We found no source that supports a memory claim.
NCCIH's green tea page says nothing about cognition (NCCIH, Green Tea). 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). No trial tested CogniHoney, and none that we found tested green tea extract in a mixed capsule for thinking.
What the sources do cover is liver safety. The shape of the evidence is therefore lopsided: a clear caution in the literature and no matching evidence of benefit. That is a reason for care, not a reason for alarm, since the injury is uncommon.
Ingredient03
What does the liver evidence show?
LiverTox rates green tea extract a well-established cause of clinically apparent liver injury, usually 1 to 6 months after starting.
The pattern is an acute hepatitis-like illness. Recovery after stopping is usual, yet fatal liver failure has been reported, and no clear dose dependency shows up in the cases (NIH LiverTox, Green Tea). NCCIH adds that injury is uncommon, and that an immune-gene variant carried by 5 to 15 percent of Americans may raise susceptibility (NCCIH, Green Tea).
| Point | What the source says | Source |
|---|---|---|
| Likelihood | Well-established cause; uncommon | LiverTox, NCCIH |
| Timing | Usually 1 to 6 months after starting | LiverTox |
| Outcome | Most recover on stopping; fatal failure has occurred | LiverTox |
| Susceptibility | Gene variant in 5 to 15 percent of Americans may raise it | NCCIH |
| Form | Mainly extracts in tablet or capsule form | NCCIH |
Ingredient04
What amount did studies use?
Case reports of liver injury involve EGCG intakes from about 140 mg to about 1,000 mg a day, with wide differences in susceptibility.
That is the USP summary (USP 2020, green tea extract review). LiverTox says there is no clear dose dependency and cites roughly 800 mg to 1.8 g of extract a day in case reports (NIH LiverTox, Green Tea). These are intakes where harm was seen, not recommended doses, and not memory trial doses.
No amount is printed for CogniHoney. The 1-to-6-month window is easy to translate. At two capsules a day, a 30-capsule bottle lasts 15 days, so the window spans two to twelve bottles. A person on a 6-bottle pack covers 90 days, or three months, which falls inside it.
Ingredient05
Does it matter whether you take it with food?
Yes. USP's monograph caution reads: not on an empty stomach, and with food.
The same caution says not to use the extract with a liver problem, and to stop and see a practitioner for abdominal pain, dark urine or jaundice (USP 2020, green tea extract review). Bolus doses on an empty stomach raise EGCG absorption, which is the reason behind the food advice.
The sibling-pack wording for CogniHoney is two capsules a day with a full glass of water, about 30 to 60 minutes before the largest meal. That is before food and may not fit the with-food advice. We cannot settle it from here, so ask your pharmacist how to read the two together, and follow the bottle.
CogniHoney capsules: 30 on the bottle count2, 3 or 6 bottles · 60-day guarantee per seller materials
See packsIngredient06
Which medicines does it touch?
NCCIH says the extract can lower blood levels of atorvastatin and nadolol, and may interact with other medicines.
- Atorvastatin, a statin used for cholesterol.
- Nadolol, a beta-blocker used for blood pressure and heart conditions.
- Any other medicine, since the list is not complete.
- Other products that contain green tea extract, because intakes add up.
NCCIH also lists nausea, constipation, abdominal discomfort and higher blood pressure among other effects (NCCIH, Green Tea). Never stop a prescribed medicine on your own. If you take either named medicine, ask the prescriber or pharmacist before starting.
Ingredient07
What are the warning signs?
Abdominal pain, dark urine, or yellowing of the skin or eyes.
Stop the capsules and see a clinician the same day, as USP advises (USP 2020, green tea extract review). Bring the bottle, say how long you have taken it and report the reaction through FDA's MedWatch program. The liver safety guide covers this together with cassia cinnamon, the other liver-flagged line.
Ingredient08
What should you ask your pharmacist or doctor?
- Is it safe for my liver, and should I have liver tests?
- Is atorvastatin or nadolol on my medicine list?
- Should it be taken with food?
- Does it contain caffeine, and how much?
Take the bottle. See medicine safety.
FAQ09
CogniHoney questions people ask
Is green tea extract bad for the liver?
It is a well-established but uncommon cause of liver injury, mainly in capsule form.
Is there caffeine in the green tea extract line?
The list does not say. Check the bottle.
Does green tea extract help memory?
We found no source that supports it. NCCIH's page says nothing about cognition.
How soon after starting can green tea extract liver injury appear?
LiverTox says usually 1 to 6 months after starting.
Should I take green tea extract with food?
USP requires a caution against taking it on an empty stomach. Ask a pharmacist how to read the bottle.
Can green tea extract affect my statin?
NCCIH says it can lower blood levels of atorvastatin. Ask your prescriber.
Is drinking green tea risky?
Not for adults as a beverage, per NCCIH. The liver reports involve extracts in capsule or tablet form.
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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