STEP 1
Take before the first bite
Take 2 capsules 10–15 min before consuming carbs.
Tony R.
"First few times I didn't get the timing right and wondered if Carb Curb worked. Once I started taking it 20-30 minutes before eating, the difference was obvious. Now it's part of my routine before any carb-heavy meal. Patience pays off."
NEW CUSTOMER OFFER: 30% OFF + FREE GIFTS
Carb Curb
30 days of Carb Curb for $29.99. That's $1 a day.
Discount auto-applied at checkout · Renews at $29.99/month
90 days of Carb Curb for $64.99. That's $0.72 a day.
Discount auto-applied at checkout · Renews at $64.99/month
One bottle. $49.99. No gifts.
One-time purchase · Free 2–3 day shipping
Fewer than 2% of customers use our money-back guarantee
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Carb Curb
Carb Curb
Supplement Facts
Serving Size:
2 Capsules
Servings Per Container:
30
| Amount per serving | % DV | |
|---|---|---|
| White Kidney Bean Extract | 1000 mg | ** |
|
Green Tea Extract
(50% Polyphenols)
|
300 mg | ** |
|
Zingiber officinale
(5% Gingerol)
|
200 mg | ** |
|
Black Pepper Extract
(95% Piperine)
|
30 mg | ** |
| Chromium Picolinate | 400 mcg | ** |
** Daily Value not established.
Other Ingredients: Rice Flour, Vegetable Capsule
White kidney bean extract has been studied to support:
66%
reduction in starch absorption during meals*
reduction in starch absorption during meals*
88%
of participants showed reduced post-meal glucose spikes*
of participants showed reduced post-meal glucose spikes*
71%
experienced sustained energy levels*
experienced sustained energy levels*
"Corporate cafeteria is basically all carbs. Carb Curb lets me eat normal lunch with my team without the afternoon energy crash."
"Saturday pizza with the family used to mean feeling awful Sunday morning. Carb Curb completely solved that. Take two capsules before we order and I can actually enjoy the meal. Kids are happy, wife is happy, I'm happy.."
4.6
average star rating
average star rating
1000mg
studied dose
studied dose
15 min
before meals
before meals
66%
lower glucose AUC*
lower glucose AUC*
*From published studies of the ingredients at the doses in Supplement Facts, not this finished product
*Based on published clinical research on the studied
ingredients at the doses shown in Supplement Facts, not this finished product. Individual results vary.
YOU KNOW THIS FEELING
It’s 9pm. The pasta was worth it. The next two hours weren’t.
Two capsules before dinner help curb starch digestion and steady the spike. Pasta night stays on the menu.
3pm slumps after pasta
Bloat after the bread basket
The guilt tax on dinner out
How it works.
STEP 2
Let white kidney bean extract get to work
Helps curb starch digestion before the carbs are fully broken down.
STEP 3
Eat and move on normally
Enjoy the meal with less of the heaviness, slump, and regret.
READY FOR GUILT-FREE PASTA NIGHT?
GET CARB CURB – $29.99
TRACKED ON A CGM
Same pasta.Different night.
One of our formulators ate the same 120g-carb pasta dinner two nights in a row, wearing a continuous glucose monitor. Night one: nothing. Night two: 2 capsules of Carb Curb, 15 minutes before.
*Illustrative wireframe curve — replace with a real n=1 CGM export (Levels / Stelo / Lingo screenshot or CSV re- plot) before shipping. Single-person result, not a clinical claim. Keep the "individual results vary" disclaimer. Legal note: avoid implying glucose control for diabetics.
Without
With Carb Curb
165 spike→ 125 steady
Same meal, no crash.
-40points off the peak
0dips into crash zone
3hsteady levels after dinner
WHEN YOU’LL FEEL IT
What happens after dose one
DOSE 1
Tonight’s dinner
2 capsules, 10–15 min before your most carb-heavy meal. Works from the first dose.
NIGHT 1
No 9pm crash
The post-pasta slump doesn’t show up. You stay level through the evening.
WEEK 1
Steadier evenings
Fewer cravings after dinner. Energy stops swinging with your plate.
WEEK 2+
The ritual locks in
Capsules live next to the olive oil. Carbs are back on the menu, minus the chaos.
Real results. Even realer reviews.
Not all carb supplementsare the same.
Most "carb blockers" on Amazon use sub-clinical doses, skip third-party testing, or load stimulants. Here's how Carb Curb stacks up.
Swipe right to compare →
Targets carb absorption
On-demand support
Natural ingredients
Long term sustainability
Quick relief time
Avg cost per day
Yes
Yes
Yes
Yes
Yes
$0.80 per day
No
No
No
No
No
$25-100 per day
No
No
No
Yes
Yes
$2-3 per day
CLINICIAN’S CHOICE
Trusted by practitionerswho know the science.
Carb Curb is recommended by registered dietitians, functional medicine doctors, and metabolic health specialists.
CGMP Certified
Free 2–3 Day Shipping
CGMP Regulated
Third-Party Tested
“The physical effects of a high-carbohydrate meal are likely familiar to many patients, but it's the cognitive after-effects that can distract or frustrate them even more. These meals can leave patients thinking about food well after they have finished eating. This well-known response is a big reason why I am glad to see chromium picolinate included in Macra's formula. Chromium is a trace mineral that supports how the body uses carbohydrates, and the research suggests it may also help patients feel more steady and satisfied after eating. Paired with other key ingredients, including white kidney bean, I think this formula has strong potential to help patients feel less burdened physically and mentally after starchier meals.”
THE COMPLETE ROUTINE
The Carb + Craving Stack
Carb Curb handles the meal. Mood Bloom handles the hours between. Together, they support a complete approach to mindful eating.
Carb Curb
Curbs starch digestion — enjoy carbs without the spike or crash.
Pre-Meal
Starch Management
Mood Bloom
Supports healthy appetite and helps reduce snacking between meals.*
Mood + Satiety Support
Add Mood Bloom – $34.99
Free shipping on both · Same 90-day guarantee
THE MACRA STANDARD
We don’t sell hope. We sell receipts.
Macra was built by formulators who got tired of watching brands fairy-dust ingredients at 10% of the studied dose and call it “clinically inspired.” We publish every Certificate of Analysis. We use the full dose or we don’t use the ingredient.
And we put our money where our mouth is with a 90-day guarantee because if you’re not feeling the difference, we don’t deserve your subscription.
Full clinical doses
1,000mg WKBE (not 200mg) with a proprietary blend.
Published COAs
Every batch tested by an independent lab.
Transparent formula
No proprietary blends, no hidden fillers. 5 ingredients, each with a job.
90-day guarantee
If you don’t feel the difference, full refund. <2% of customers use it.
This isn’t a diet brand. We built Carb Curb for people who love food and refuse to choose between a plate of pasta and how they feel two hours later. No guilt. No restriction. Just better chemistry.
YOUR SUBSCRIPTION GIFTS
More than a bottle. A ritual.
Every subscription ships with gifts designed to make the habit stick — not sit in a drawer.
The Carb Lover’s Playbook
12 recipes optimized for Carb Curb timing — pasta, pizza, risotto, bread. Each one tells you exactly when to dose.
Refillable Glass Jar
Amber glass, airtight seal. Keeps capsules fresh and looks good next to the olive oil.
Travel Tin
Brushed aluminum, fits 7 days. TSA-friendly. For the dinner reservation you didn’t plan for.
Insulated Tumbler
Stainless steel, double-walled. For the post-dinner walk that replaces the post-dinner crash.
Total gift value: $69 with 90-day subscription.
$30 with 30-day Starter Kit.
Frequently Asked Questions
What ingredients are in Carb Curb and why?
White Kidney Bean Extract (1,000mg): Clinically studied for carbohydrate support Green Tea Extract (300mg, 60% Polyphenols): Antioxidant support and metabolism Zingiber officinale (200mg, 5% Gingerol): Digestive wellness support Black Pepper Extract (95% Piperine): Enhanced absorption of other ingredients Chromium Picolinate (400mcg): Supports healthy glucose metabolism*
Does Carb Curb work on all types of carbs?
No. Carb Curb works specifically on starch-based carbs (bread, pasta, rice, oats, potatoes). It does not affect simple sugars found in candy, soda, juice, or fruit. If your meal is primarily simple sugars, Carb Curb will have minimal effect. It's designed for complex-carb, starchy meals.*
Will Carb Curb cause digestive issues?
Some people may experience mild bloating or gas when first starting Carb Curb, particularly with large starchy meals. This typically resolves within 1-2 weeks as your body adjusts. Starting with smaller starchy meals for the first few uses can help minimize this. Discontinue use if digestive discomfort persists.*
Is Carb Curb safe with diabetes medications?
If you have diabetes or take blood sugar medications (including metformin, insulin, or GLP-1 agonists), consult your doctor before using Carb Curb. White kidney bean extract may affect postprandial blood glucose, which could interact with diabetes medications. Always check with your healthcare provider first.*
What exactly does Carb Curb do?
Carb Curb features 1,000mg of clinically studied white kidney bean extract that may help slow the breakdown of dietary starch into sugars. It works specifically on starch-based carbs (bread, pasta, rice, potatoes) by supporting your body's natural carbohydrate processing. Take 2 capsules before meals containing complex carbs.*
- 3rd-Party Tested
- CGMP
- Vegan
- CGMP
