Ultimate Burnbox Stack
Ultimate Burnbox Stack
Ultimate Burnbox Stack
Ultimate Burnbox Stack
Ultimate Burnbox Stack

Best seller from $59.99 per box

BurnBox Ultimate Fasting Kit

This science-backed 3 day protocol is designed to fuel your body, boost mental clarity, and help you feel your best without deprivation.  Most users lose 4–6 pounds – without starving.

Promotes Fat Burning and Healthy Weight Loss

Enhances Energy and Mental Focus

Supports Healthy Digestion and Gut Reset

Encourages a Clean Break from Processed Foods
Best value54% OFF

Today: $179.97 for 4 months of supplies (3 months + 1 month free). Your first renewal is in 4 months, then $179.97 every 3 months for a 3-month refill.

  • Free Ultimate Welcome Kit ($105.95 value)
  • Maximum savings — lowest price per serving
  • Free shipping
  • Cancel or pause anytime
23% OFF

USE CODE: BURN5 for additional $5 discount. Up to 55% OFF!

ALL ORDERS SHIP WITHIN 48 HOURS

Why fast with BurnBox?

BurnBox takes the guesswork out of fasting by giving you everything you need in one simple kit. Backed by science and designed by experts, it combines nutrient-rich broths, fiber for satiety, and electrolytes to keep you hydrated and energized – so you’re never running on empty.


Unlike extreme cleanses or DIY fasts, BurnBox is structured to support your body with real nourishment while promoting fat burning, reducing bloating, and improving metabolic health. You’ll feel mentally sharp, physically lighter, and more in control – all without starving or feeling deprived.

Ingredients

Electrolyte booster (lime flavor) supplement facts:

Serving Size: 1 Packet (11 g)
Amount per Serving:

Calories: 15

Calcium (as Calcium Lactate): 300 mg (23% DV)

Phosphorus (as Potassium Phosphate): 370 mg (30% DV)

Magnesium (as Magnesium Citrate): 140 mg (33% DV)

Chloride (as Sodium Chloride): 600 mg (26% DV)

Sodium (as Sodium Chloride and Sodium Citrate): 640 mg (28% DV)

Potassium (as Potassium Phosphate): 820 mg (17% DV)

*Percent Daily Values (DV) are based on a 2,000-calorie diet.

Other Ingredients: Crystallized Lime (citric acid, lime oil, lime juice), Citric Acid, Stevia Leaf Extract, Inulin.
Allergens: None.

Suggested Use: Add 1 packet to 16 fl oz (480 ml) water. Mix well.
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Fiber Shake (grapefruit flavor) ingredients:

Serving Size: 1 Packet (7.3 g)
Amount per Serving:

Calories: 30

Total Fat: 0.5 g (<1% DV)

Total Carbohydrate: 5 g (2% DV)

Dietary Fiber: 3 g (11% DV)

Sodium: 30 mg (1% DV)

Psyllium Husk: 4 g (†)

Flaxseed Powder: 1 g (†)

*Percent Daily Values (DV) are based on a 2,000-calorie diet.
† Daily Value (DV) not established.

Other Ingredients: Crystallized Grapefruit (citric acid, grapefruit oil, grapefruit juice), Stevia Leaf Extract, Rice Hulls, Sea Salt, Citric Acid.
Allergens: None.

Suggested Use: Add 1 packet to 14–16 fl oz (420–480 ml) water. Mix well.

NOTICE: This food should be eaten with at least a full glass of liquid. Eating this product without enough liquid may cause choking. Do not eat this product if you have difficulty in swallowing.

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Bone broth (with natural flavor) ingredients:

Serving Size: 1 Packet (9.2 g)
Amount per Serving:

Calories: 30

Total Fat: 1 g (1% DV)

Saturated Fat: 1 g (4% DV)

Total Carbohydrate: 1 g (<1% DV)

Dietary Fiber: 1 g (2% DV)

Protein: 3 g

Sodium: 500 mg (22% DV)

Potassium: 100 mg (2% DV)

Chicken Bone Broth: 5 g (†)

*Percent Daily Values (DV) are based on a 2,000-calorie diet.
† Daily Value (DV) not established.

Other Ingredients: Sea Salt, Natural Flavor, Coconut MCT Oil Powder (Medium Chain Triglycerides from Coconut Oil, Gum Acacia), Organic Rice Hulls.
Allergens: Tree Nuts.

Suggested Use: Add 1 packet to 8–10 fl oz (240–300 ml) of warm water or soup. Mix well.

Shipping & returns

Please allow 1-2 days for your order to be processed for shipping. Shipping in the continental US takes about 3-7 days. Once the order is processed, you will receive a confirmation email with the tracking information.

Free 14 day returns. T&C's apply.

Replenish Essentials

Heal & Strengthen Gut

Boost Metabolism

Balance Hormones & Stress

Extend Longevity

Replenish Essentials

Heal & Strengthen Gut

Boost Metabolism

Balance Hormones & Stress

Extend Longevity

Why diets and detoxes haven’t worked?

Because your body doesn’t need more restriction – it needs a reset. We live in a world full of processed foods, blood sugar crashes, constant snacking, and non-stop stress. Over time, this overwhelms your system, slows your metabolism, and makes it harder to feel in control of your health.

That’s why you’re stuck with bloating, stubborn weight, and fatigue. BurnBox breaks the cycle with a guided 3-day fast that restores balance, supports digestion, and kickstarts fat burning – without deprivation.

The reset that changes everything

BurnBox activates one of your body’s most powerful built-in tools: autophagy – the natural process of cellular cleanup and repair that happens during fasting. When you pause constant digestion, your body finally gets the chance to clear out damaged cells, reduce inflammation, and restore balance at a deep cellular level.

BurnBox is a full-body reset. You’ll feel the difference – less bloating, more energy, better focus, and a renewed sense of control.

How BurnBox makes fasting safe

Maintains your circadian rhythm

If you fast for an extended period unprepared, it can disrupt the normal pattern of your circadian rhythm – your internal clock carrying out essential body functions. If disturbed, it can lead to poor sleep, low energy levels, and hormonal imbalances. Burnbox unique blend of supplements helps your body to maintain or even improve your circadian rhythm.

Replenishes your electrolytes

When fasting, your body quickly runs through a small reserve of its electrolytes. Electrolytes are minerals essential for the normal functioning of almost all of your body’s systems and organs. You may experience headaches, fatigue, or muscle cramps if fasting carelessly. Burnbox supplements will replenish your electrolytes to keep your body hydrated and avoid unpleasant side effects.

Supplies essential nutrients

If you’re negligent about your fasting preparations, it can deplete your body’s vital minerals, vitamins, and amino acids. You may feel tired and weak after your first day. To prevent that, certified dietitians at Burnbox created a unique blend of supplements. It supplies your body with all the essential nutrients to maximize the benefits of your program.

Reduces inflammation

If you rush into prolonged fasting unprepared, you may shock your gut and experience digestive problems like constipation, bloating, and stomach aches. That’s why your Burnbox program includes supplements specifically designed to support your digestive system during fasting.

FASTING IN THE Press

What could be next for you

What's inside the burnbox kit

Clinically-Supported Support for Prolonged Fasting

PSYLLIUM HUSK

A soluble prebiotic fiber that gently supports digestion and satiety.

During fasting: Helps promote a feeling of fullness without breaking your fast, reducing hunger pangs and improving compliance.

Science-backed benefits: Supports gut microbiome balance and helps regulate bowel movements, which can slow during extended fasts.

ELECTROLYTES (Sodium, Potassium, Magnesium)

Essential minerals that maintain hydration, nerve function, and energy levels.

During fasting: Replenishes minerals lost through urine and sweat, preventing fatigue, headaches, muscle cramps, and the dreaded “keto flu.”

Clinically proven: Key to supporting blood pressure, heart function, and physical performance when no food is consumed.

BONE BROTH

A nutrient-rich broth made from slow-simmered bones, rich in collagen, amino acids, and minerals.

During fasting: Offers a gentle, low-calorie way to nourish your body, support gut lining integrity, and provide joint and skin support—all without spiking insulin.

Science-backed benefits: Glycine and glutamine in bone broth help reduce gut inflammation, improve sleep quality, and support detox pathways.

What This Means for Your Fast

These supplements are your essential toolkit for a successful prolonged fast:

Psyllium helps you stay full and regular

Electrolytes keep your energy, mood, and focus stable

Bone broth supports healing, hydration, and recovery

Together, they turn your fast from a struggle into a high-performance metabolic reboot.

Why You’re Not Seeing Real Health Gains—Yet

Diet and exercise alone can’t fully refresh your body. Prolonged fasting triggers autophagy—your cells’ natural cleanup process where they break down and recycle damaged components to stay healthy and efficient. This process boosts fat burning and supports longevity. Without it, lasting weight loss and health improvements stay out of reach.

Why diet and exercise aren’t enough

Your body’s hormone network is complex—diet and exercise alone aren’t always enough to reset it. Burnbox uses the power of prolonged fasting to activate deep cellular repair, rebalance insulin sensitivity, and unlock fat loss and longevity at the root.

30,000+ Lives Changed. Time For You To Join

Real stories of change. Here’s what you can look forward to.

I’ve fasted periodically over the last year with this kit and lost 16 lbs. The energy I have is incredible! The bone broth really helped me stay comfortable during the fast.

Charlotte H.

I'd considered myself somewhat experienced with fasting but I wanted to try out this kit and see what all the hype is about. So far my longest fast and it wasn't even all that hard, the sachets and info provided really helped!

Ava W.

Honestly went in with low hopes - "fasting kits” always scream gimmick. But after three 20-hour fasts I felt steady, no crashes, no shaky hands. The electrolyte stick tastes kinda like diluted lemonade (in a good way) and the guide kept me on track.

Emma C.

Nice customer support answered a few of my queries, smooth ordering experience, and the product itself is without a fault. Happy with my purchase and fasting experience.

Maggie F.

FAQS

How's Burnbox different from other fasting methods (like intermittent fasting and fasting-mimicking)?

A 3-day fast like Burnbox can be more straightforward and impactful than fasting-mimicking or intermittent fasting. Here's why:

Simplicity: With a 3-day fast, you have a clear start and end. There's no need to constantly plan meals or watch the clock for eating windows, which you often have to do with fasting-mimicking or intermittent fasting.

Intensity and Results: A full 3-day fast can kickstart significant metabolic changes in a short period. It's like a hard reset for your system, potentially leading to more noticeable results compared to the gradual approach of intermittent fasting or the partial fasting of fasting-mimicking plans.

Mental Clarity: Some people find the absolute nature of a 3-day fast easier to stick to mentally. There's less room for bending rules, which can happen with intermittent fasting (like overeating in eating windows)

Why should I get BurnBox ultimate subscription?

By subscribing to BurnBox Ultimate, your supply renews automatically every 3 months, keeping your metabolism primed between resets — and you'll get a free Ultimate Welcome Kit ($105.95 value) with your first order.

What happens after I pay?

Your Burnbox is going to be dispatched and will receive the tracking information once it is sent. Inside, you will find everything you need to make the most of your experience and achieve your goals

Is fasting safe?

Generally, yes, but it depends. If you've got diabetes, you should chat with your doctor first since it can mess with your blood sugar. For those who are pregnant or breastfeeding, it's usually a no-go because your body needs extra food for the little one. Best to check with a healthcare pro to be sure fasting's cool for you!  

I'm not sure I have time to fast. What about dinners with friends and birthdays?

Totally get it! We suggest planning your fast for a long weekend or during a holiday when you have more freedom in your schedule. Sure, it might be a bit inconvenient, but remember, it's your health we're talking about here – maybe it's worth the effort?