In adults with insulin resistance or type 2 diabetes, taking vinegar with a high-carb meal improved the body's insulin sensitivity.
Read the 2004 study in American Diabetes Association
Kickstart Digestion
The Spark
Five-star reviews
The Spark packs 1000mg of apple cider vinegar into every serving so you can skip the shots and still get the benefits. It also includes prebiotic inulin, a live probiotic, and a multi-enzyme complex to help break down what you eat.
$29.99Bestseller
30-day supply. Subscribe & save 15%, delivered monthly. Pause or cancel anytime.
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30-day supply per unit$25.49/mo$29.99SAVE 15%
Just $0.85/day $1.00/day
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- ✓Free shipping, always
- ✓Cancel or skip anytime
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Try it risk-free for 60 days
Give it an honest run. If you don't feel better about your gut, we'll refund you, even if the bottle is empty. No forms, no runaround.
- Clinically Studied Ingredients
- Built to Survive Digestion
- No Fillers, No BS
- GMP-Certified Manufacturing
Backed by published research
Oxford AcademicThe ingredients in this formula are studied in 2 peer-reviewed publications. See the research
DIGESTION | ENERGY | LIGHTNESS
A lighter you, after every meal.
Apple cider vinegar, prebiotic fiber, and digestive enzymes in one small capsule.
ACV taken before meals is the classic pre-meal ritual: it primes your stomach so heavy food feels less heavy afterward.
Inulin from Jerusalem artichoke root is a prebiotic fiber: dinner for the beneficial bacteria already living in your gut.
The DigeZyme enzyme complex helps digest carbs, proteins, and fats, so more of your meal becomes fuel instead of bloat.
All the benefits of the vinegar ritual with none of the taste, and nothing acidic washing over your teeth.
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Our standards
Every bottle is produced in a GMP-certified, FDA-registered facility and tested before it ships. What the label says is what the capsule holds.
GMP-Certified Facility
Made in the USA
Third-Party Tested
No Artificial Fillers
WHAT'S INSIDE
Ingredients come first.
The working ingredients, with exact doses on the label. Nothing else.
Apple Cider Vinegar
Digestion
1000mg of organic ACV powder per serving. The full daily ritual, condensed into capsules.
Prebiotic Inulin
Gut Health
Root fiber from Jerusalem artichoke that feeds the beneficial bacteria in your digestive tract.
Enzyme Complex
Comfort
DigeZyme's multi-enzyme blend helps break down carbs, proteins, and fats as you eat.
Live Probiotic
Balance
Lactobacillus acidophilus LA85, a live culture that reinforces your gut's own good bacteria.
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THE PROOF
Backed by published research.
The strongest findings from the human studies behind these ingredients, straight from the journals that ran them.
Peer-reviewed & published in
PubMedAmerican Diabetes AssociationOxfordOxford Academic
Over 12 weeks, obese adults taking daily vinegar significantly lowered body weight, BMI, visceral fat, waist size, and blood triglycerides versus placebo.
Read the 2009 study in Oxford AcademicResearch cited is on individual ingredients, not on finished Stillbelly products. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Full research library.
QUICK | EASY | DAILY
Daily routine, made easy.
- 1
Take 2 capsules with 6–8 oz of water.
- 2
Best 15–30 minutes before your biggest meal of the day.
- 3
Stay consistent. One bottle is a full 30-day supply.
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Common questions
The Spark, answered.
How is this different from drinking apple cider vinegar?
Each serving packs 1000mg of organic ACV powder into two small capsules, so you get the daily ritual without the taste, the acid burn, or the effect on tooth enamel. It also adds prebiotic inulin, a live probiotic, and a multi-enzyme complex that plain vinegar does not.
When should I take The Spark?
Take 2 capsules with 6 to 8 oz of water, ideally 15 to 30 minutes before your biggest meal of the day. One bottle is a 30-day supply at 60 capsules.
Can it help after heavy meals?
The DigeZyme enzyme complex helps break down carbs, proteins, and fats, and ACV before meals is a long-standing pre-meal ritual, which is why many people take it ahead of large meals. It is a supplement for general wellness, not a treatment for any condition.
What are the other ingredients?
HPMC (vegetable capsule), brown rice flour, magnesium stearate, olive oil, and silicon dioxide. Check the label if you have specific sensitivities.
From the Journal
The science behind it, in plain English
Better Together
Make it the whole system.
The Spark, The Shield, The Quick Fix, and The Cleanse cover digestion from every angle. Bundle all four and save about $20, or subscribe for 15% off with free shipping on every order.
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The Spark
$25.49/mo subscribed
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