Guarana Capsules

Guarana capsules contain extract from the seed of Paullinia cupana, a climbing plant native to the Amazon basin. The seed contains caffeine naturally, at a higher concentration by weight than a coffee bean. Capsules are sold either as guarana on its own, or as one ingredient inside a wider formula. Doses vary enormously between products, and a lot of labels never tell you what theirs is.

That last part is the whole problem with this category. So this page does something most supplement pages won't: it tells you what to check on a label, why it matters, and then shows you our own label against the same checklist. Including the parts where the law says we have to keep our mouth shut.

What guarana actually is

Paullinia cupana is a woody vine that grows across the Amazon basin, mostly in Brazil. Its seeds have been roasted and ground there for centuries, long before anyone had a word for caffeine. In Brazil today you can buy guaraná as a soft drink in any corner shop.

The seed is the part that matters. Raw guarana seed runs roughly 2–6% caffeine by weight, depending on the plant and the harvest. A coffee bean sits closer to 1–2%. That is the entire reason guarana ended up in energy products.

You will find it sold in three forms: raw powdered seed, a standardised extract, and capsules containing either of those. The difference between the second and the third is where most of the confusion lives.

Extract or powder? The number on the front is not the number that matters

Here is the trick, and once you see it you cannot unsee it.

A label saying "1000mg guarana" usually means raw powdered seed. At 3% caffeine, that is about 30mg of caffeine. Less than half a cup of coffee, for a number that looks impressive on the front of the bottle.

A label saying "60mg guarana extract" looks smaller. But an extract is concentrated, and a good one tells you what it has been standardised to. A 22% extract at 60mg delivers around 13mg of caffeine. Still modest, but you can actually calculate it, because the label gave you enough to work with.

Big number, small effect. Small number, honest number. The only thing that lets you tell them apart is whether the brand disclosed the form and the standardisation. Most don't.

What to check before you buy

• Is the guarana dose given in mg? If it's buried inside a "proprietary blend" or an "energy matrix", you are being told the ingredient is present and nothing else. There is no legitimate reason to hide a dose.
• Extract or powder, and standardised to what? Without this, the mg figure is close to meaningless.
• What is the total caffeine per daily dose? From every source in the formula, added together. This is the number that determines what the product actually does to you, and EU law requires it to be declared when a product is high in caffeine.
• What is the capsule made of? Gelatin capsules are made from animal collagen. Pullulan and HPMC are plant-derived. If a brand markets to vegans and stays quiet about the shell, ask why.
• What else is in there? Magnesium stearate, silicon dioxide, microcrystalline cellulose, rice flour. None of these are dangerous. All of them are filler. You pay per capsule either way.
• Where does it ship from? An EU address means EU consumer protection, EU food law, and a real place to send it back to.

The label test

This is our answer to every question above. Take this column, open any other guarana product you are considering, and see how many rows you can fill in from their label.

What guarana does, and what we are not allowed to tell you

This is the section other brands leave out, and it may be the most useful thing on this page.

In the EU, a supplement can only make a health claim if that specific claim has been authorised under Regulation (EC) No 1924/2006. Not "is supported by studies". Not "is widely believed". Authorised, by name, on a public register.

Here is where our four ingredients actually stand:

• Guarana. It's a botanical. Botanical health claims sit in a legal holding pattern: submitted for assessment years ago, put on hold, and still not authorised. Some brands use them anyway and rely on that gap. We don't.
• Caffeine. Claims about caffeine and alertness were assessed and were not authorised for use in the EU. So we won't make them.
• Taurine. No authorised claims.
• Vitamin C. Authorised. It contributes to the reduction of tiredness and fatigue, and to normal energy-yielding metabolism.

Which means: any guarana product telling you it sharpens your focus is either not selling into the EU, or is quietly betting that nobody checks. In 2023 the Berlin Regional Court ruled against a German supplement brand over precisely this, and the product's own name formed part of the ruling.

We would rather show you the doses and let you decide than write a sentence we can't stand behind.

Aurora Flow Energy Complex, in full

Questions people actually ask

What is guarana?

Guarana is the seed of Paullinia cupana, a climbing plant from the Amazon basin. The seed contains caffeine naturally, at a higher concentration by weight than coffee beans. In supplements it appears either as raw powdered seed or as a concentrated extract. There's more in our guide to what guarana is and where it comes from.

How much caffeine is in guarana?

Raw guarana seed is roughly 2–6% caffeine by weight. Standardised extracts are concentrated well beyond that, and a properly labelled extract will state the percentage. Without knowing whether you are looking at powder or extract, a guarana figure in mg tells you very little. See guarana vs caffeine for the full comparison.

Is guarana different from caffeine?

The caffeine molecule in guarana is the same caffeine molecule found in coffee. What differs is the matrix it arrives in: the seed also contains tannins and other plant compounds. Whether that changes absorption in any meaningful way is still debated, and we are not going to pretend the argument has been settled in our favour.

How much guarana is in a typical capsule?

There is no standard. Products range from tens of milligrams of concentrated extract to well over a gram of raw powder, and the two are not comparable. Aurora Flow contains 60mg of guarana extract per daily dose, alongside 180mg of declared caffeine.

Are guarana capsules vegan?

The guarana itself is a plant. The capsule shell often isn't. Gelatin shells are made from animal collagen and are common in this category. Aurora Flow uses a pullulan shell, which is plant-derived.

Can I take guarana capsules with coffee?

What matters is your total caffeine across the day, not which sources it came from. EFSA considers single doses up to 200mg, and habitual intakes up to 400mg per day, not to raise safety concerns for most healthy adults. Aurora Flow contains 180mg per daily dose, so a coffee on top puts you a long way through that. If you're weighing this up, how much caffeine is too much works through the numbers, and the caffeine crash explains what happens at the other end.

Does guarana cause a crash?

Caffeine from any source will eventually clear your system, and if you took a lot of it, you will notice it leaving. Guarana is not exempt from that, whatever the marketing says. Dose and timing matter far more than the source.

Related reading

• Energy supplements, explained: what to look for on any label
• Caffeine capsules: dose ranges and the EFSA reference intakes
• What is guarana, and where does it come from?
• Guarana vs caffeine: the same molecule, a different package
• What the evidence on guarana actually says
• How much caffeine is too much? The EFSA reference intakes
• Aurora Flow Energy Complex: 60 capsules, four ingredients, every dose disclosed