Paullinia cupana
Guarana Seed
The second caffeine source in one blend, which is worth adding up.
Evidence grade: Straightforward, and worth counting.
What It Is
Guarana is the seed of a Brazilian climbing plant, and it is one of the most caffeine-dense plant materials in commercial use — typically two to four times the caffeine of a coffee bean by weight.
It appears in energy drinks for exactly that reason. Its presence in a glucose support formula is more about perceived energy than about glucose.
What It Is Doing Here
Three points, written without the marketing vocabulary.
It is caffeine, principally
Guarana also contains theobromine and tannins, and there is some evidence its caffeine releases more slowly than coffee's. The main event is still caffeine.
Slower release, longer tail
The tannins in guarana appear to slow absorption. That is usually described as a benefit, and it also means the caffeine is still around later in the day.
Two sources, one undeclared total
This is the second caffeine ingredient in a single 200 mg blend. Neither amount is printed, so the combined figure is unknowable from the label. That is the single most practical fact on this page.
The Dose Question
Caffeine itself is well studied and its effects are not controversial: alertness rises, so does a small amount of energy expenditure, and sensitivity varies enormously between people for genetic reasons.
What is not established is that caffeine at a blend-share dose does anything for glucose. Treat this ingredient as an energy component and count it against your daily caffeine rather than expecting more of it.
Where Else You Would Meet It
| Source | Typical amount | Notes |
|---|---|---|
| Guarana seed powder | 1 g | Roughly 40 to 80 mg caffeine |
| Coffee | 1 cup | Roughly 95 mg caffeine |
| Black tea | 1 cup | Roughly 47 mg caffeine |
| Energy drinks | 1 can | Often 80 mg or more, guarana frequently included |
| Dark chocolate | 30 g | Roughly 12 mg caffeine |
| This product | Blend component | Amount not individually declared |
Cautions Worth Knowing
Take the dose in the morning. That instruction exists because of this ingredient and green tea extract together, and because you cannot see the total.
Caffeine warrants more caution if you are pregnant, breastfeeding, managing anxiety or panic, living with a heart rhythm condition, or taking medication that interacts with stimulants. Children should not take it at all, which is one of several reasons this product is for adults.
Further reading: the licorice ceiling and what sublingual actually does. General information about a nutritional ingredient, not medical advice. See the health notice.
Guarana Seed Questions
What we are asked about this line of the label specifically.
Will it keep me awake?
It can, if taken late. The morning instruction is not a stylistic preference; it is there because of the caffeine you cannot measure.
Is guarana caffeine different from coffee caffeine?
The molecule is identical. The tannins in guarana appear to slow its absorption, which lengthens the effect rather than changing it.
Can I take this and drink coffee?
Yes, with the total in mind. If you are already at four cups a day, this is not the product to add without dropping one.
Does caffeine affect blood sugar?
There is research in both directions and no settled answer, with acute effects reported on insulin sensitivity in some studies. It is not why this ingredient is here.