The world's first tri-blend ketone fuel

Feel like yourself again.

K_1 is a daily ketone drink designed to support clear thinking, steady energy and everyday performance. Just mix with water and get on with your day.

Choose your flavor How it works

Trusted by more than 1 million customers since 2015.

No crash or jitters
Patented formula
Caffeine-free option

A K_1 shaker bottle beaded with condensation on a kitchen counter

Starts working in ~1 hour No diet required

It isn't age.
It isn't willpower.
It's fuel.

Most of us run the whole day on sugar, caffeine and stress, then wonder why 3pm feels like walking through mud. Your body was built to run on something better.

You're not underperforming.
You're underfueled.

The 3pm fog
You reread the same email three times and still can't hold the thread.
Energy that spikes and drops
Coffee gets you up. An hour later you're lower than where you started.
Cravings that win
By evening the snack cupboard is making the decisions, not you.
Slower recovery
The walk, the class, the weekend. Everything takes longer to bounce back from.
Strength you can't afford to lose
Muscle quietly slips away with age, and it's the first thing crash diets take.
A heart working harder than it should
Running on low-grade fuel puts strain on the system that matters most.

Pouring a sachet of K_1 into a shaker bottle on a kitchen counter

One packet. One shaker. That's the whole plan.

K_1 delivers bio-identical ketones, a fuel your body already knows how to use, and used to make on its own before modern eating shut it off. You're not adding a stimulant. You're switching fuel.

Mix it

One packet into 16-24 oz of water. Shaker, bottle or glass. Over ice, or warm if you prefer.

Drink it

Once a day. Most people choose the morning, or right before the part of the day that usually drags.

Feel it

Usually within the hour. Most people notice the bigger changes inside 10 days.

No diet changes. No fasting. No complicated protocol.

Pick your flavor. Made for your mornings.

Not sure which one? Berry Berry is the easiest first pick, and every flavor comes in a caffeine-free version.

K_1 Tri-Blend Ketone Fuel

A daily ketone drink mix with clean, bio-identical ketone energy to support clear thinking, steady energy and everyday performance.

Built-in electrolytes
No keto diet required
One packet a day with water

Flavor

Formula

Servings

Frequency

Secure checkout
1 million+ customers

People who were exactly where you are.

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“I gained myself back”

Before ketones, I wasn't myself. I was moody, exhausted, unfocused, and running on fumes. I couldn't sleep, I couldn't think clearly, and I didn't have the energy to show up the way I wanted to as a mom.

Norma58 · mom of five · K_1 customer

“K_1 all the way”

I'm full time in the corporate world and own and operate my own business. So to say I need energy — well, that's an understatement. Sometimes my 52-year-old brain doesn't click the way it's supposed to. K_1 gives me sustained energy the entire day.

Clarissa52 · business owner · K_1 customer

“My focus is sharp again”

My brain is my income. I was pushing through brain fog, low energy, and struggling to focus, yet still trying to do everything like I always do. I felt like I was losing my edge. Since using K_1, that has completely shifted.

ElisaK_1 customer

The results described in these testimonials are unique to the individual, and achieved through dedication to a specific diet and exercise regimen in conjunction with Prüvit's dietary supplements. Results vary and are not typical.

The first hour is what you notice. The first month is what you keep.

What K_1 customers most commonly report, in the order they report it.

1 hourElevated energy
24 hoursSharpened focus
7 daysBalanced appetite
14 daysReduced bloating
30 daysMetabolic reprogramming
90 daysOptimized body composition

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results vary.

The first patented tri-blend ketone technology on the planet

Three forms of ketone in one drink, designed to support the three systems that decide how you think, feel and move.

In the brain

Sharpens focus
Boosts clarity
Reduces cognitive fatigue
Helps calm daily stress

In the heart

Supports more efficient energy use
Reduces strain
Supports long-term cardiovascular health
Improves performance at any age

In the muscles

Helps protect against age-related muscle breakdown
Boosts ATP production
Accelerates recovery
Protects muscle while dieting, the #1 cause of rebound weight gain

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results vary.

A woman resting on a low wall above the sea after a run, smiling out at the water

This is what it feels like when your body finally gets the right fuel.

Clear thinking. Calm, steady energy. A lighter mood, fewer cravings, better sleep, and the quiet confidence of doing something that actually moves the needle on how you feel.

It actually tastes good.

Four flavors, each one designed to be the drink you look forward to, not the supplement you have to choke down. Every flavor comes with caffeine or completely caffeine-free.

Tropical

Bright, crisp, refreshing

Fan favorite

Berry Berry

Rich, smooth, mixed berry

Easy first pick

Berry Lemon

Zesty, clean, light

Best over ice

Berry Mango

Sweet, sunny, tropical

Wild Berry

Dark, tart, wild berry

Newest

Prüvit didn't join the ketone category. We created it.

More than a decade of research, a patented formula no one else can duplicate, and over a million people who've used these ketones safely since 2015. This isn't a trend product with a new label.

Get started with K_1

Patented tri-blend

The only formula of its kind, including the C5 BHB ketone.

10+ years of research

Developed over a decade, not launched over a weekend.

Doctor formulated

Physicians and research scientists shaped the formula.

1,000,000+ customers

Used safely around the world for more than ten years.

Not ready yet? Take the Feel Better Fast Blueprint with you.

A simple 7-day starting plan you can open on your phone. What to drink, when to drink it, one easy meal move and a 10-minute movement each day. Yours free.

The full 7-day plan in one clean guide
Exactly when to take K_1 for your goal
Simple meal and movement swaps, nothing extreme

Day 1 lands on the next screen. No purchase needed.

The questions everyone asks

Do I have to do keto or change my diet?

No. K_1 works with any diet or lifestyle. You do not need to follow keto or low-carb to feel the benefits. That said, many people naturally start making better food choices once they have more energy and fewer cravings, which is why the results tend to stick.

How fast will I actually feel something?

K_1 starts working in your body within about one hour. Most people notice meaningful benefits within 10 days, while some take longer depending on their starting point and overall health.

Will it keep me up at night?

K_1 comes in both a charged version and a completely caffeine-free version, so you can choose what suits your body and the time of day you'll be drinking it. Many people take the caffeine-free version in the afternoon or evening.

How is this different from coffee or an energy drink?

Most energy drinks rely on caffeine or sugar, which stimulate the nervous system and raise stress hormones without truly fueling your body. K_1 provides real fuel: ketones are a calorically dense energy source your brain, heart and muscles use directly, without the spike, crash or blood sugar disruption.

Is it safe to take every day?

Yes. Ketones are a natural fuel your body already produces. This technology has been used and tested for over a decade, with more than one million people worldwide using ketones safely. Always consult a healthcare professional before adding supplements to your routine.

Will it help with weight management?

K_1 supports weight management by providing clean energy, reducing cravings, improving appetite control, and protecting muscle while dieting, which is critical for long-term success. Losing muscle is one of the main reasons people regain weight, and K_1 helps prevent that.

Can I try it before committing to a bigger box?

Yes. The 10-serving box is designed exactly for that. Most people feel a noticeable difference within 10 days, though we recommend giving K_1 a full six weeks to truly experience its impact. The longer it's consistently available in your body, the more balanced and efficient your system becomes.

What does it taste like?

Like a fruit drink, not a supplement. Four flavors. Berry Berry, Berry Lemon, Tropical and Berry Mango, mixed with 16-24 oz of water, over ice or warm. K_1 uses 100% bio-identical ketones, which is also why it avoids the harsh taste and digestive discomfort common with synthetic ketone products.