Item 02 of 14
Cinnamon Bark In GlycoAid
A kitchen spice with the longest run of human trials in this category.
What It Is
The inner bark of trees in the Cinnamomum family, dried into the quills sold as cinnamon sticks. The same spice sitting in your kitchen cupboard.
What it is studied for
Post-meal glucose response, mostly, with the longest continuous run of human research of any culinary spice in this category.

Evidence grade: Large. A substantial body of controlled human research exists for this ingredient, though almost always at doses a 500 mg fourteen-item blend cannot reach.
The variety question
Cassia is the common supermarket type and contains coumarin; Ceylon contains far less. A label declaring only Cinnamomum bark does not say which, and this one does not.
The Dose Question
Study protocols run between one and six grams daily. That is a gram-scale figure against a 500 mg blend holding fourteen items, so the cinnamon here is a fraction of a fraction of a study dose.
Cinnamon Bark On The GlycoAid Label
| Most studied for | Post-meal glucose response |
|---|---|
| Typical research dose | 1–6 g per day |
| Amount here | Not published; inside the 500 mg blend |
| Varieties | Cassia and Ceylon; the label does not specify |
| Watch item | Coumarin in cassia at sustained high intakes |
Cautions
Cassia cinnamon contains coumarin, a liver concern at sustained high intakes. At the scale possible inside a 500 mg blend this is not a practical worry, but it is why cinnamon supplements taken by the gram deserve a second look.
Questions About Cinnamon Bark
Is this the same as kitchen cinnamon?
The same bark. The label declares Cinnamomum bark without naming the variety.
Does cinnamon lower blood sugar?
It has been studied for post-meal glucose response with mixed results across many trials. Nothing about it treats a diagnosed condition.
Could I just eat cinnamon instead?
Trial quantities are gram-scale, well past what any capsule holds. That cuts both ways: the amount here is very small.
Is coumarin a problem in this product?
Not at this scale. The concern applies to gram-level daily cassia intakes over long periods.
Judging It Fairly
No single item on this panel can be assessed from the outside on its own, and no single week of taking the capsule settles anything either. What week one is actually measuring takes that apart properly.
Where It Sits In The Formula
Cinnamon Bark is printed inside one 500 mg proprietary formulation alongside thirteen other items, so the amount here is unknown. That is the honest position on every panel page on this site, and it is why where the 500 milligrams goes is worth ten minutes. The item before this one on the label is Berberine and the one after it is Gymnema Sylvestre.

Buy today
GlycoAid Carries All Fourteen
Cinnamon Bark is one item of fourteen in a 500 mg once daily capsule.
- 14 ingredients in one 500 mg formulation
- One capsule daily with a meal, 30 to a bottle
- 60-day money-back window
- Free US delivery on 3 and 6 bottle packages