What Is Guarana?

Guarana is one of the most common caffeine sources in energy products, and one of the least explained. Here is what it is and how it appears on labels.

What Guarana Is

Guarana (Paullinia cupana) is a climbing plant in the soapberry family, native to the Amazon basin, where it has a long history of traditional use. Its distinctive red fruit contains black seeds, and those seeds are the part used commercially: they contain naturally occurring caffeine, along with other compounds found in the plant such as theobromine and theophylline in small amounts.

The caffeine concentration in guarana seeds is often cited as higher than that of coffee beans on a per-gram basis, which is why relatively small amounts of guarana extract can contribute meaningful caffeine to a product.

How Guarana Is Processed

Commercially, guarana seeds are dried, roasted or otherwise processed, then ground into a powder or extracted. The result appears in products as:

• Guarana powder or extract in energy drinks
• Guarana seed extract in capsules and powdered supplements
• Guarana-containing blends in multi-ingredient formulas

Guarana on a Label

The ingredient appears as "guarana," "guarana extract," "guarana seed extract" or by its scientific name Paullinia cupana. What varies between labels is whether the caffeine contributed is quantified:

1. Some products state total caffeine per serving, with guarana named as one source among several.
2. Others list guarana without a caffeine figure, in which case the label does not tell you how much caffeine the guarana contributes.

If you are tracking caffeine, the second case is the reason to check carefully - see Hidden Sources of Caffeine and How to Read an Energy Supplement Label.

Guarana Compared to Other Caffeine Sources

For how these sources compare per serving, see Coffee vs. Energy Supplements: How to Compare Caffeine.

A Note on Claims

This article describes guarana as an ingredient: what it is, where it comes from and how it appears on labels. It makes no claims about outcomes. Research on guarana as an ingredient does not by itself establish what any finished commercial product containing it will do. Anyone sensitive to caffeine, pregnant, nursing, or managing a health condition should consult a healthcare professional before using caffeinated products.

The Takeaway

Guarana is an Amazonian plant whose seeds naturally contain caffeine, making it a common caffeine source in energy drinks and supplements. On labels, look for "guarana" or Paullinia cupana - and note whether the caffeine it contributes is actually quantified.

If you want to compare a labeled option, the pHit category on MarketPlace Global states its caffeine amount per serving on the label.