How Much Caffeine Is in UPDATE Energy Drink? (The Answer Is Zero)

Zero. UPDATE Energy drink contains no caffeine at all — the word doesn't appear anywhere on its ingredient list. What it contains instead is 300mg of paraxanthine, the compound your liver makes from caffeine, delivered directly so you skip the conversion.

That's the short answer, and it surprises most people who find the product through Kim Kardashian's launch rather than through supplement research. Here's what's actually in the can, why a caffeine-free drink still wakes you up, and the two things worth knowing before you drink one. Background: what is paraxanthine.

What UPDATE Energy Actually Contains

Straight from the label on a 12 fl oz can:

Full ingredient list: carbonated filtered water, citric acid, natural flavors, Alpha-GPC (GeniusPure®), paraxanthine, sucralose, tartaric acid, L-theanine, and vitamin B12 as methylcobalamin. No caffeine, no taurine, no sugar.

Why a Caffeine-Free Drink Still Works

This is the part that confuses people, and it's genuinely interesting. When you drink coffee, your liver converts roughly 84% of that caffeine into paraxanthine. That metabolite is responsible for most of what you actually feel — the alertness, the focus, the not-being-tired.

The other things caffeine becomes — theobromine and theophylline — contribute more to the side effects than the benefits: the jitters, the elevated heart rate, the long tail that's still in your system at bedtime. Take paraxanthine directly and you get the useful part without brewing the rest. The full mechanism is in paraxanthine vs caffeine.

So "caffeine-free" here doesn't mean "stimulant-free." UPDATE is a stimulant product. It just uses the metabolite instead of the parent compound.

Two Things Worth Knowing Before You Drink One

300mg is a big single dose. The human trials that established paraxanthine's effects used 200mg. Common label ceilings sit at 400mg per day. One can is therefore 150% of the studied dose and about three-quarters of a day's ceiling — in a format you can't split. If you're new to paraxanthine or generally stimulant-sensitive, that's a lot to meet it with. See paraxanthine dosage guide for how doses scale.

The L-theanine dose isn't disclosed. L-theanine appears in the ingredient list but not in the "contains" callout that specifies paraxanthine at 300mg and Alpha-GPC at 315mg. Ingredients are listed by weight and it sits near the end, so the amount is likely modest — but without a number you can't compare it to the 100–200mg used in research. This is common across the category and worth checking on any label. We wrote a guide to reading a supplement label covering exactly this.

How It Compares on Stimulant Load

The half-life column is the underrated one. A 4pm Celsius leaves meaningful caffeine circulating at 11pm; paraxanthine at the same hour clears substantially faster. That's the real argument for the category, and it's why we wrote about taking caffeine at 7pm in the first place.

Can vs Gummy: The Format Question

UPDATE and NEEDSOME use the same core idea and differ on delivery. Both are caffeine-free paraxanthine products; both include Alpha-GPC and L-theanine. The differences are dose, disclosure, and portability.

UPDATE gives you 300mg in a fixed can. NEEDSOME gives you 200mg across five gummies at 40mg each, plus 200mg L-Theanine, 300mg Alpha-GPC (GeniusPure®), and 100mcg vitamin B12. see the full NEEDSOME formula.

Honest read: if you want the biggest single hit and you're near a fridge, the can delivers more paraxanthine per serving than we do. If you want dose control and something that survives a pocket, a bag, and a TSA line, that's the case for gummies. The longer head-to-head is in UPDATE Energy vs NEEDSOME, and the format breakdown is in paraxanthine powder vs gummies.

FAQ

How much caffeine is in UPDATE Energy drink?

Zero. Caffeine does not appear anywhere on UPDATE's ingredient list. The alertness comes from 300mg of paraxanthine, the compound your liver normally produces from caffeine, delivered directly instead.

What gives UPDATE Energy its energy if there's no caffeine?

Paraxanthine — 300mg per can. It blocks the same adenosine receptors caffeine does, which is the mechanism behind feeling alert, but without the theobromine and theophylline byproducts that come with metabolizing actual caffeine.

Is 300mg of paraxanthine a lot?

It's above the 200mg dose used in the human trials, and roughly 75% of the 400mg daily ceiling most labels use. For a first-timer or anyone stimulant-sensitive, one full can is a substantial single dose that can't be split.

Does UPDATE Energy have sugar?

No. The label lists 0g total sugars and 0 calories. It's sweetened with sucralose, an artificial sweetener, plus citric and tartaric acid for tartness.

Can you drink more than one UPDATE per day?

One can delivers 300mg of paraxanthine and common label ceilings sit at 400mg per day, so a second can would put you well past that. Stick to one — and skip it on days you're also drinking coffee, since your body converts that caffeine into the same compound.

Will UPDATE Energy keep me awake at night?

Paraxanthine's half-life runs about 3 hours versus caffeine's 5–6, so it clears faster. But 300mg is a large dose — drinking one late in the afternoon can still reach into your evening. Treat it like a real stimulant, because it is one.

Is UPDATE Energy better than a regular energy drink?

On stimulant profile, arguably — no caffeine means no theobromine or theophylline byproducts, less jitter mechanism, and faster clearance. On dose control it's worse than formats you can split, since a can is a fixed 300mg you either finish or waste.

The Bottom Line