Cinnamon extract in CogniHoney: What It Is, What the Research Shows and the Safety Flags

An extract of cinnamon bark, with the species and the plant part left unstated in the list.

Cinnamon is a spice most people know from the kitchen. A capsule extract is something else: a concentrate, made by a process the list does not describe, from a bark that comes from more than one tree. The two that matter for supplements are cassia and Ceylon, and they differ in a way that touches the liver.

The list given to this site for the sibling pack says only "cinnamon extract". NCCIH notes that product labels often do not name the species (NCCIH, Cinnamon), and this list follows that pattern. Until your bottle says otherwise, the species is unknown.

The list does not say, and the difference matters because cassia contains coumarin and Ceylon has only trace amounts.

Cassia is the more common cinnamon in grocery stores, and the 2010 coumarin review names it as the main dietary source of coumarin (Abraham 2010, coumarin risk). That does not tell us which one is in the capsule. Guessing in either direction would be wrong.

The caution is coumarin from cassia cinnamon and the liver.

NCCIH says interactions between coumarin and the liver have been reported, and that prolonged use of cassia could be an issue for sensitive people such as those with liver disease (NCCIH, Cinnamon). The risk is not universal. The 2010 review describes coumarin as hepatotoxic in a susceptible subgroup (Abraham 2010, coumarin risk), which fits the picture of a few people being affected and most not.

The same list carries green tea extract, which LiverTox rates a well-established cause of clinically apparent liver injury (NIH LiverTox, Green Tea). We found no source on the two together, so we do not claim they add up. They simply share an organ, and that is a reason to tell your doctor if you have any liver condition. The liver safety guide sets out the warning signs.

NCCIH says to talk with a provider before use if you take any medicine, and that cinnamon is mainly studied for blood sugar.

Because the research on cinnamon centers on blood sugar, anyone who takes medicine for diabetes should ask whether an added cinnamon extract could affect it. We found no source that quantifies an interaction, so we state none. The point is simply that the conversation belongs with the person who prescribes.

Keep your regular glucose checks and note the start date of any new supplement in the same log. If readings change, the date helps your clinician see why.