Best Carb Blockers | Complete Guide

Top 10 Carb Blockers

This content has been Fact-Checked by a Certified Nutritionist in our Publishing Team. Learn more here. Always consult a medical professional before commencing any diet.

How to find the best carb blockers and why are they so popular? Many people struggle to lose weight and keeping up with a restrict diet.

If you are looking for an effective way to lose weight without starving yourself, consider carb blocker supplements (also known as starch blockers).

There are many natural starch blockers on the market that claim to help with weight loss and suppress appetite.

One of the main advantages of carb blockers is that you don’t have to succumb to restrictive dieting.

Carb blockers work by suppressing the enzyme alpha-amylase, which is responsible for breaking complex carbs so they can be digested.

Without this enzyme, your body cannot absorb complex carbohydrates, so they just pass through your system.

Their calories do not count! 🎉

Complex carbs can be found in many foods, such as bread, rice, pasta, starchy vegetables, and more.

It is recommended to do some research in order to find the best carb blockers on the market and asking your doctor is the best before taking them. Always go for reliable and effective supplements.

How do you know what makes up a good carb blocker?

We have done all the work for you!

Here is a list of our top 10 best carb blocker supplements including tips on how to choose the best carb blocker for your needs.

Top 10 Best Carb Blockers

carb blocker results

When choosing starch blockers, read about product pros and cons as well as consumer reviews.

Reviews are super important because they tell you the real deal.

How to find carb blocker reviews?

If you are planning on buying your carb blocker from an online store, the product reviews are normally displayed next or bellow the retailer product.

Some sites may not display their product reviews, in that case simply type in your search engine the product name + review.

When scanning through carb blocker reviews, look for results and side effects experiences.

Most importantly, look for the product’s overall rating.

Another way to figure out the product rating is to simply count how many reviews are positive and negative.

If you realize that most reviews are negative, that’s a good indication to stay way from that particular carb blocker.

Without further delay, here are the top 10 best carb blockers you can use for weight loss and other health benefits:

Recommended reading:

1. Absolute Nutrition Carb Blocker

best carb blockers

Absolute Nutrition Carb Blocker is a powerful supplement specially formulated to maximize weight loss.

It is often voted the best carb blocker in 2019. This starch blocker contains a generous amount of white kidney bean extract: 700 mg per serving.

It encourages carb blocking and it produces effective weight loss results. Another advantage reported by users is diminished appetite and improved energy levels.

This carb blocker also contains chromium and vanadium. These two ingredients are great at speeding up the weight loss process.

They help your body break down sugars in a faster and more efficient manner. All of this results in rapid weight loss.

This supplement contains only natural ingredients and is ephedra-free. Another advantage of this carb blocker is that it doesn’t contain caffeine.


  • Easy to use
  • Caffeine-free
  • Ephedra-free
  • A high concentration of white kidney bean per serving
  • A large package: 90 caplets per bottle


  • None

2. Dietrine Carb Blocker

Dietrine Carb Blocker is a supplement containing Phase 2 white kidney bean extract.

This is one of the most effective neutralizers of the alpha-amylase enzyme.

Using this starch blocker, you will be absorbing fewer calories through complex carbs.

This is a perfect supplement for those who consume large quantities of carbohydrates on a daily basis.

Dietrine Carb Blocker is made to be 100% natural, with no known interactions with other drugs or herbal dietary supplements.

It doesn’t contain any ma huang, ephedrine, ephedra or any stimulants.

In order to stay safe, make sure to consume this supplement according to the manufacturer’s directions.


  • Easy to use
  • Contains Phase 2 carb controller
  • Completely natural: no stimulants, ephedra or ephedrine
  • Effective weight loss results


  • A relatively small package size (60 capsules)

Recommended reading:

3. Bodyfit Carb Ctrl

Carb Ctrl is a powerful carb blocker ideal for those who want fast results.

This supplement contains white kidney bean as an active ingredient in large quantities.

One capsule has as 1,400 mg of white kidney bean extract, which is more than most of the competitors’ supplements.

The company is so sure of their product that they offer 30-day money-back guarantee for those who are not satisfied with results.

In addition to weight loss benefits, this supplement promises lower cholesterol levels and boosting your fiber intake.

In addition to the white kidney bean extract, this supplement contains vitamin B6, ascorbic acid, chromium, and zinc.

The vitamins help boost your immune system and chromium helps your body metabolize carbs and level out your blood sugar levels.


  • A high amount of white kidney bean extract
  • Rapid results
  • Vegetarian-friendly
  • Caffeine-free
  • Gluten-free
  • Soy-free


  • This supplement may be too strong for some people

4. Irwin Naturals Maximum Strength 3-in-1 Carb Blocker

Irwin Naturals Maximum Strength 3-in-1 Carb Blocker is a powerful supplement with carefully selected ingredients for weight loss.

This carb blocker is also made for boosting your metabolism and preventing hunger.

As a result, you eat less, burn more calories and block complex carbohydrates.

The supplement’s formula is carefully made to maximize these results.

It contains white kidney bean extract as a prime starch blocker ingredient.

There is 1,000 mg of white kidney bean extract per serving.

In addition, the supplement includes chromium, flaxseed oil, lipase, protease, and cinnamon. you can check the ingredients label from here.

This is a targeted formula that is promised to give effective results.

This is perhaps the best carb blocker for keto.


  • Very dependable
  • Added ingredients for maximum results


  • None

5. PureNature Carb Blocker

carb blocker pills

PureNature Carb Blocker promises an effective natural formula specially formulated for maximizing weight loss.

It includes white kidney bean extract as an active ingredient made for inhibiting enzymes that break down complex carbs.

PureNature Carb Blocker contains caffeine which boosts its absorption and improves your energy levels.

Other key active ingredients are chromium and ascorbic acid which help to speed up the weight loss process by boosting your metabolism.

The manufacturer claims that the supplement is organic and non-GMO.

A great thing about this carb blocker is that it contains Phase 2.

This ingredient can maximize the reduction of calorie consumption from carbs.

According to the manufacturer, this reduction can go as high as 66%.

Chromium in this formula is responsible for reducing appetite and regulating your hunger.


  • Contains chromium
  • Contains vitamin C
  • Vegetarian-friendly
  • Soy-free
  • Gluten-free


  • Contains caffeine.
  • Less white kidney bean extract per capsule than many competitors.

Recommended reading:

6. NOW Phase 2 Starch Neutralizer

NOW Phase 2 Starch Neutralizer is a powerful carb blocker promising effective results.

This supplement contains Phase 2 white kidney bean extract, which is believed to be the most effective natural starch blocker on the market.

With NOW Phase 2 Starch Neutralizer blocker, those carbs are non-absorbed, and their calories do not count.

As a result, you get rapid weight loss and boosting metabolism.

Each capsule in this supplement contains 500 mg of the white kidney bean extract.

This supplement uses vegetable capsules that are suitable for vegetarians.

The package contains 120 capsules, which is one of the largest on the market.


  • Contains Phase 2
  • Vegetarian-friendly
  • Gluten-free
  • Soy-free


  • No other ingredients for added performance


CARB STOPPER EXTREME is a high-performance starch blocker also with white kidney bean extract.

This supplement contains 1,000 mg of white kidney bean extract per serving, which is considered the optimum amount.

CARB STOPPER EXTREME is made in the USA is a certified GMP.

It is also advertised as a 100% natural supplement.

A notable feature of this supplement is that it does not contain any stimulants.

The capsules are suitable for vegetarians.

The only active ingredient in this supplement is white kidney bean extract, which makes these capsules one of the purest in terms of ingredients.

The manufacturer claims that users report an average 15-pound weight loss per month, but this claim could not be verified.


  • Product promises very effective weight loss compared to competitors
  • Vegetarian-friendly
  • 1,000 mg of white bean extract per serving
  • Soy-free
  • Gluten-free


  • Users are divided over its effectiveness

Recommended reading:

8. Protein World Carb Blocker Capsules

Protein World Carb Blocker Capsules promise a high-performance, speed weight-loss.

This supplement contains 890 mg of white kidney bean extract per serving, which is one of the highest on the market.

In addition to this active ingredient, the supplement also contains Garcinia Cambogia. This ingredient is responsible for regulating blood sugar levels.

Blood sugar level regulation is important for health, and it also helps with weight loss.

When your sugar levels are optimal, you don’t experience hunger so often and you eat less.

Another advantage of Garcinia Cambogia is that it helps with blocking the breakdown of carbs.

It also has certain fat-burning qualities that further help with weight loss.


  • 890 mg of white kidney bean extract per serving
  • The supplement contains Garcinia Cambogia
  • Vegetarian-friendly
  • Gluten-free
  • Easy to swallow capsules


  • Not enough information about ingredients
  • Not enough information about where the supplement is made

9. She-Carb Block

She-Carb Block is a starch blocker supplement formulated specifically for women who want to lose weight.

However, there is no specific reason why it wouldn’t work on men.

Just like many other starch blockers on the market, this one contains white kidney bean extract as its active ingredient.

This supplement has 1,250 mg of white kidney bean extract per serving.

The supplement is made in the UK.

In addition to white kidney bean, this supplement contains caffeine.

This addition promises improved energy levels and it is made for boosting your metabolism.

Other ingredients include chromium and vitamin C.

She-Carb Block also promises to reduce bloating.

The supplement comes with a free e-book “The Ultimate Female Fat Loss Blueprint”.

The book contains tips that will help you lose weight in a healthy yet effective manner.

The supplement also comes with a money-back guarantee.


  • Comes with a weight loss guide
  • Contains 1,250 mg of white kidney bean extract


  • Contains caffeine
  • Not suitable for vegetarians
  • Specially formulated for women

Recommended reading:

10. Nutra Forge – Pure Forskolin Extract

Nutra Forge – Pure Forskolin Extract is an appetite suppressant that has a bit different formula than the other carb blockers.

This one uses Forskolin extract, so it is ideal for people who do not like white kidney bean supplements.

Forskolin extract is a natural starch blocker that works on some people better than on the others.

Those who like it, claim that it provides very effective results.

If you tried white kidney bean and it doesn’t work for you, this one might provide better results.

This supplement contains powerful, 3,000 mg capsules.

Nutra Forge – Pure Forskolin Extract is formulated to suppress hunger and block carbs.

In addition to these benefits, the supplement promises to control the appetite and boost your metabolism for effective weight loss results.

The supplement doesn’t contain any fillers or binders.


  • Forskolin as an active ingredient: may work for those who don’t like white kidney beans
  • Fast-acting
  • No binders or filler


  • Some people might strongly prefer white kidney bean supplements

How to Choose a Carb Blocker – 7 Tips

healthy carb blockers

How do I choose a carb blocker? With so many different supplements on the market, it may be difficult to know which one will work for you.

Choosing the best fat blocker should be an individual affair. In other words, what works for your friends may not work for you.

It is important to understand that we all have differences in our metabolisms.

Some people report better and faster results on carb blockers, while others struggle to lose weight even on these supplements.

Unfortunately, no one has invented a magic pill for weight loss yet!

That being said, there are several important features you want your supplements to have.

When choosing a carb blocker, make sure to pay attention to the following:

1. Ingredients and safety

Just like with any other dietary supplement, your number one concern should be your health. It is important to only consume carb blockers that contain natural ingredients that you know are safe for you.

Keep in mind that not all manufacturers disclose all of the ingredients, so make sure it is a company you trust (see below).

Furthermore, it is best if you consult your doctor before choosing a carb blocker. Your doctor can advise you on the supplements that are safe for you to consume.

2. Is the company reliable?

While reputation is not everything, it is a very important parameter you should think about. Is the company known, and is it reliable?

What do you know about the manufacturer? You need to be aware of the status of your chosen brand before you invest your money.

Keep in mind that this is about your health, and you need to protect yourself. Make sure to do some research before you trust a specific company’s supplements.

research carb blockers

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3. How effective is this supplement?

You want your carb blocker to work, and you want it to work for you.

There are many starch blocker supplements promising effective results but do not trust the label. Make sure to read other people’s reviews and honest reports of results.

You want a carb blocker that works consistently and provides effective weight loss.

4. Carb blockers come in many different concentrations

Some capsules contain as few as 100 mg of a white kidney bean or another active ingredient.

Others contain 700 mg or even more of the active ingredient.

A more potent capsule might be more effective, but it can also prove to be a downside: stronger capsules also carry a higher risk of side-effects. Also, keep in mind that the daily dosage of white kidney bean should not go above approx. 3,000 mg. Keep this in mind when choosing your supplements based on potency.

5. Powder or capsules?

Many carb blockers come in capsules or tablets, but there are also those that are available as powders.

Generally speaking, there is no much difference between the two, as long as the ingredients and their concentration are the same. Some people find difficulty in swallowing capsules so the powder form is more suitable for them.

However, many people find powdered starch blockers to be too bitter. On the other hand, keep in mind that supplements that come in capsules tend to be more expensive.

6. Serving number

How many capsules are there in the bottle? How many servings? Keep in mind that you will need to take your carb blockers before each meal, which means anything from two to four or more capsules per day.

The number of capsules in a bottle is important. A supplement may seem cheap, but if it only contains a week’s worth of supplements it can turn expensive in the long run.

7. Price

While a price should not be your main reason for choosing a specific supplement, it is definitely a factor you want to take into account. Carb blockers are not very expensive, so it is possible to find an affordable solution. When choosing your supplement, make sure to pay attention to serving number, potency and other parameters.

Carb Blocker Benefits

flat belly carb blockers

There are many benefits advertised by carb blocker manufacturers but most of these claims are not backed up by scientific studies.

There are some studies done on animals, that do show the ability of carb blockers to prevent the secretion of enzymes responsible for breaking complex carbs.

Other studies demonstrated carb blockers’ benefits in suppressing hunger and in regulating blood sugar levels.

However, in general, there hasn’t been enough research done on carb blockers to provide definite proof of these supplements’ benefits.

Nevertheless, there are many users who claim that starch blockers are effective in terms of weight loss and suppression of hunger.

Here are the main best carb blocker benefits:

1. Weight loss

In essence, starch blockers help you lose weight by eliminating complex carbs from your overall calorie count. These supplements block the enzyme alpha-amylase, and without it, your body cannot break complex carbohydrates so they could be absorbed.

It means that calories from these complex carbs do not count toward your overall calorie count.

Consuming fewer calories on a daily basis leads to weight loss.

2. Suppressing appetite

Another benefit of carb blockers is that it can help prevent hunger. As a result, you consume less food and you feel full for longer periods of time.

3. Boosting your metabolism

Certain carb blockers claim to boost your metabolism and improve your energy levels which contribute to weight loss.

4. Regulating blood sugar levels

One of the best things about carb blockers is that they regulate your blood sugar levels. This can be beneficial for people who have a mild problem regulating blood sugar.

Studies showed that carb blockers prevented healthy people from getting high blood sugar levels after eating food rich in complex carbs.

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Carb Blocker Disadvantages

Carb Blocker Disadvantages

If you wish to use carb blockers, you need to be aware of the possible side effects and other disadvantages that these supplements can bring.

While generally considered safe, carb blockers might not be for everyone.

Here are the main side effects of carb blockers:

1. Bloating and flatulence

Some people react in this way to carb blockers, particularly to those supplements that are very potent. Because carbs are not digested, they go straight to your large intestine. This can cause bloating and flatulence.

Sometimes, carb blockers work too efficiently. This can cause loose stools and diarrhea. It is more common with supplements that have a high concentration of the active carb blocker ingredient.

This is a rare side effect, but it can happen to some people as a result of taking carb blockers.

2. Dangerously low sugar levels

This side effect can happen to people with diabetes. If you have diabetes, you should not use carb blockers before consulting your doctor. This is a serious concern so make sure to take this warning seriously.

These side effects do not happen to everyone, and not with every single carb blocker.

However, make sure to pay attention to how you feel when you start using starch blockers.

If you notice any of these side effects, stop using the supplement and consult your doctor immediately.

3. Uneven results

Carb blockers simply work better for some people than the others. There is still not enough research to prove who is better suited for these supplements. One thing to note is that starch blockers seem to work better for people who consume large quantities of complex carbs.

4. Doesn’t work on simple carbs

One of the most important things to remember about carb blockers is that they don’t work on simple carbohydrates. Simple carbs are found in processed foods and many sweet foods. It means that you have to avoid these foods to lose weight. Carb blockers can only help you with complex carbs, such as those from bread, rice, potatoes (and other starchy veggies).

5. Not all complex carbs are blocked

Keep in mind that carb blockers do not prevent all of the complex carbohydrates from being absorbed. It means that you will probably receive certain calories from those carbs.

All supplements and their active ingredients have a safe dosage for a reason.

If you go above this, you can overdose on a supplement and have negative side effects.

To avoid this problem, make sure to consume your supplements as directed.

Never take more capsules than recommended on the package.

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How to Take Carb Blockers

how to take carb blockers

To stay safe and to maximize carb blocker results, make sure to follow the manufacturer’s instructions.

Generally speaking, it is best to take your carb blockers before you eat a meal rich in complex carbohydrates.

Starch blockers are most effective if taken 5-10 minutes before the meal. If you take it too early, they will be absorbed by your system before they can block carbs.

If you take them too late, they will not be able to prevent the absorption of carbohydrates.

Follow the manufacturer’s instructions. Typically, you should take 1-2 capsules before each meal.

However, make sure to check what is directed. Some supplements are taken in different ways than this.

Also, keep in mind that there is no point in taking a carb blocker if your meal doesn’t contain a significant amount of complex carbohydrates.

Remember: starch blockers work only on complex carbs and not simple carbs.

Do not waste a capsule on a meal that doesn’t contain bread, potatoes, starchy veggies, rice or other food rich in complex carbs.


Carb blockers are popular supplements you can use for weight loss.

They are generally safe, but you need to be careful about choosing the product that suits you best.

Make sure to read labels carefully and to research companies before you opt for a specific starch blocker supplement.

While there is no definite proof of the effectiveness of carb blockers, many people report excellent results.

If your diet contains plenty of complex carbohydrates, you may use these supplements to cut on calorie intake and boost your weight loss goals.

Before using any supplement, make sure to consult your doctor.

Your doctor can advise you about the best supplements you can use to stay healthy and lose weight.

If you have diabetes, talking to your doctor is a must because starch blockers can cause dangerously low blood sugar levels for diabetic people.

Remember: carb blockers work better for some people than the others.

You may discover that these supplements are just what you need to achieve your weight goals.

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This content has been Fact-Checked by a Certified Nutritionist in our Publishing Team. Learn more here.

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