Everything to Know About Kim Kardashian’s Buzzy Energy Drink

Reported by Women's Health Magazine.

Kim Kardashian has entered the energy drink space — and she's not doing it quietly. Her co-founded brand UPDATE, relaunched this year, is generating real buzz with a key selling point: it runs on paraxanthine instead of caffeine. Each can delivers 300 mg of the compound, with marketing that promises to cut the crash, ditch the jitters, and skip the overstimulation. Bold claims. But do they hold up?

Here's the chemistry: paraxanthine isn't actually a caffeine alternative — it's a caffeine metabolite. According to Women's Health Magazine, paraxanthine is what your body naturally produces when it breaks down caffeine, making up roughly 80% of caffeine's composition. Think of the relationship the way you'd think of protein and amino acids: one is simply the broken-down form of the other. So while UPDATE is positioning itself as something categorically different, you're essentially drinking a concentrated version of what your liver would've made anyway.

The Research Gap You Should Know About

The bigger issue? The science on isolated paraxanthine is thin. Experts can't yet pin down a reliable conversion rate between paraxanthine and caffeine, so the current guidance is to treat it as a rough one-to-one swap — even though that's more educated estimate than established fact. Given that the FDA's recommended daily ceiling for caffeine sits at 400 mg for adults, UPDATE's 300 mg per can takes up the vast majority of that limit in a single serving. Stack it with your morning cold brew or an afternoon Celsius, and you've quietly blown past the threshold before dinner.

The practical takeaway: UPDATE isn't inherently dangerous, but it demands the same awareness you'd bring to any stimulant. If you're already a multi-coffee-a-day person or a habitual pre-workout drinker, this isn't an add-on — it's a replacement. The 3 a.m. stare-at-the-ceiling consequences of overstacking stimulants are very real, and no sleek monochromatic can is worth that particular spiral.

Treat paraxanthine like caffeine until science tells you otherwise — because right now, that's exactly what the experts are doing.

Read the original at Women's Health Magazine.