Best Carb Blockers Ranked for 2019 (Top 10 Brands)

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This is our list of the best selling carb blockers on the market right now.

These 10 carb block brands have been ranked because they dominate the e-commerce sales charts, fitness bloggers love them and they have the highest user reviews online.

Top 10 Carb Blocking Supplements Compared

1. Genetic Solutions White Kidney Bean Extract


Genetic Solutions White Kidney Bean Extract is simply white kidney bean extract that functions as a carb blocker. This highly concentrated extract is sold in liquid gel capsules for easy administration and absorption. This product contains some of the purest and most potent white kidney bean extract for the best price, making it a strong carb blocker as well as the top recommendation on our list.


  • Highly concentrated extract of white kidney beans
  • Very affordable
  • Made in the USA
  • Non stimulant

What’s in it:

  • 1,000 mg white kidney bean extract per serving

Who makes it: Genetic Solutions is a nutritional supplement manufacturer that has been producing products that stand up to rigorous clinical tests at an affordable price for over 15 years. Their products are produced in facilities that are GMP certified and are of the highest potency and purity. Their slogan, “Everyday Supplements for Everyday People,” embodies who they are as a company and how they care about their customers.

Bottom line: It is all natural and potent, with a very effective dosage of white kidney bean extract. Out of many effective carb blockers, this one is certainly one of the best on our list.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy Genetic Solutions WKB Extract

2. NOW Foods Phase 2


This powerful carb blocking supplement is non-stimulant and vegetarian as well! It comes in vegetarian capsules that are easily added to your daily regimen, at 3 capsules per starchy meal.


  • All natural
  • Non-stimulant
  • Vegetarian
  • Made in USA

What’s in it:

  • 1,500 mg Phase 2 per serving (3 capsules)

Who makes it: NOW Foods is an all natural nutritional supplement manufacturer that is very well known in the natural supplements industry, and has been around since 1968. They have been family owned since the beginning, and maintain the stability and focus that started their journey into the natural supplements industry. Their products are manufactured and distributed from their LEED Silver certified facilities in Bloomingdale, Illinois. They have achieved a variety of awards and recognition for the excellent products and environmental awareness.

Bottom line: This product is one of the best carb blocking supplements on the market. It uses a clinically tested proprietary ingredient, called Phase 2. The product also provides a very high and effective carb blocker dosage that is split into increments of 500 mg per capsule so that the dosage can be reduced if needed. Overall, this is one of the best carb blockers on the market.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy NOW Foods Phase 2

3. Absolute Nutrition CBlock


Absolute Nutrition CBlock uses the proprietary carb blocking ingredient Trim Plex, which is concentrated white kidney bean extract. It also incorporates chromium, which is a trace metal.


  • Affordable
  • All natural

What’s in it:

  • 700 mg Trim Plex (as white kidney bean extract)
  • 100 mg vanadium
  • 200 mcg chromium

Who makes it: Absolute Nutrition is a vitamin, supplement, and sports nutrition manufacturer that was founded in 2009. Located in Decatur, Alabama, this relatively small company is truly connected to its customers and provides excellent customer service through knowledgeable and experienced staff members that range from bodybuilders to registered nurses. Their staff members are also experienced with their products, which shows how effective they really are.

Bottom line: This product is produced by a reputable company and provides high quality carb blocker benefits at an affordable price. It is high on our list because it combines the benefits of white kidney bean extract, vanadium, and chromium in a synergistically effective way. Overall, this is one of the best carb blockers on the market.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy Absolute Nutrition CBlock

4. Applied Nutriceuticals Garcinia Cambogia


Applied Nutriceuticals Garcinia Cambogia uses the carb blocker benefits of garcinia cambogia to support weight loss and promote satiety.

What’s in it:

  • 500 mg garcinia cambogia

Who makes it: Applied Nutriceuticals is a sports nutrition brand that was founded in 2006. They produce supplements in a GMP certified facility, and they stand by their products with a 100% satisfaction guarantee. Every one of their products is tested with a full spectrum of different bacterial tests in order to ensure their safety and efficacy.

Bottom line: This product uses garcinia cambogia for its carb blocking benefits. Garcinia cambogia blocks certain carbohydrates from being digested and converted into body fat. The manufacturer is also very reputable, and they provide consistently high quality and effective products. However, the dosage is on the lower end of the spectrum for garcinia cambogia.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy Applied Nutriceuticals Garcinia Cambogia

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


Irwin Naturals Maximum Strength 3-in-1 Carb Blocker is a powerful carb blocking supplement that utilizes white kidney bean extract, flax seed oil, chromium, cinnamon, lipase, protease, and BioPerine complex. This 3-in-1 carb blocking approach is intended for those with carb-rich diets.


  • 3-in-1 formula
  • Non-stimulant

What’s in it:

  • 1000 mg common bean (white kidney bean extract)
  • 1050 mg flax seed oil
  • 125 mcg chromium
  • 100 mg cinnamon
  • 20 mg lipase
  • 20 mg protease
  • 6 mg BioPerine complex

Who makes it: Irwin Naturals is an all natural vitamins, minerals, and supplements producer that focuses and producing products with high bioavailability. They incorporate BioPerine into their products to ensure that their bioavailability is high, and use liquid softgels to improve their absorption. They have undertaken an ethical responsibility of attempting to ensure that as many people as possible attain essential nutrients every day through their support of the Vitamin Angels charity campaign, which is a campaign that helps underprivileged populations attain the nutrients that they need.

Bottom line: This product is produced by a responsible and reliable manufacturer, and offers an effective dose of white kidney bean extract. It also incorporates multiple other ingredients into its 3-in-1 formula. However, there are some downsides to this product. Their softgel capsules are not for everyone. The pills they produce in this product are very large and hard to swallow for some, and occasionally an unopened product may contain softgels that have burst.

ⓘ If you buy something using the links below, we get a small commission.

Where to Buy Irwin Naturals 3-in-1 Carb Blocker

6. Natrol White Kidney Bean Carb Intercept


This product also includes chromium, a trace metal, that is necessary for the metabolism and it also uses sodium, which is a mineral that functions as an electrolyte. Overall, these three ingredients work together to create an effective carb blocking supplement.

What’s in it:

  • 1000 mg Phase 2
  • 40 mcg chromium
  • 20 mg sodium

Who makes it: Natrol is a vitamins, minerals, and supplements manufacturer that has been dedicated to empowering consumers to take back their health for over 35 years. Their products are produced in certified GMP facilities, and they are constantly trying to improve their formulas. They fund research into the improvement of current products and the discovery of new health products. Their supplements are sold through health benefit categories as well, which makes it easy for their customers to find the vitamins, minerals, and supplements they need.

Bottom line: This product is produced by a reliable manufacturer and includes good carb blockers. Phase 2 has excellent carb blocker benefits and this product provides an effective carb blocker dosage. It also incorporates chromium and sodium. However, some people do not need extra sodium, which can cause negative side effects. Some of these effects include bloating and constipation.

7. Dynamic Nutrition Pure White Kidney Bean Extract


Dynamic Nutrition Pure White Kidney Bean Extract is a carb blocking supplement that utilizes all natural white kidney bean extract to administer carb blocking benefits. These carb blocking pills are vegetarian capsules and contain no milk, soy, egg, shellfish, peanuts, wheat, soy, or gluten.

What’s in it:

  • 1000 mg white kidney bean extract

Who makes it: Dynamic Nutrition is a nutritional supplement brand that is dedicated to helping you achieve the best health of your life. It is owned by business partners Stephanie and Brendon, who have 18 years of combined experience in the health and fitness industry. They are so connected to their customers that they offer a free 15 minute skype session in which you can discuss your health and achieve quality health and fitness advice from these experts.

Bottom line: This product provides the basic carb blocking benefits of a good carb blocking supplement. It is manufactured and produced by a reputable company, and helps to promote weight loss. However, this product comes in a bottle of 30 capsules. There are 2 capsules per serving, which means you only get fifteen servings, which is good for about five days of carb blocking. This product also does not feature appetite suppression.

8. Source Naturals Phase 2 Carbohydrate Blocker


Phase 2 Carbohydrate Blocker is a top carb blocking supplement made by a good company. Its active ingredient is Phase 2, which utilizes white kidney bean extract.

What’s in it:

  • 1g Phase 2 (white kidney bean extract)

Who makes it: This product is made by Source Naturals, a popular naturally supplement manufacturer that was formed in 1982. Today, Source Naturals’ products can be found on store shelves worldwide, and they boast the #1 immune support product, Wellness Formula. Beyond their ultra-popular blends, Source Naturals also produces a wide variety of useful health products and supplements.

Bottom line: Overall, this is a good carb blocking supplement from a good company. It uses pure white kidney bean extract. With that said, it’s on the expensive side, and its simple formula does not contain anything notably unique enough to make this one of our top recommendations.

9. Pride Nutrition C-Gone


This is one of the top carb blockers for athletes because some athletes need all the carbs they can get, but they just do not need those carbs being metabolized into body fat. For rigorous athletes, Pride Nutrition C-Gone is one of the best carb blockers.

What’s in it:

  • 500 mg acetyl L-carnitine
  • 500 mg L-glutamine
  • 200 mg alpha lipoic acid
  • 100 mg gymnema leaf extract
  • 15 mg vanadyl sulfate

Who makes it: Pride Nutrition is an athletic supplements manufacturer and producer that uses the finest natural ingredients in their supplements. Their products are designed for athletes to enhance their performance, so that they can operate at their peak performance levels. Their products are made from vitamins, minerals, fatty-acids, and amino acids which are all intended to supplement your diet.

Bottom line: This product is made by a reliable manufacturer and is definitely a decent product. Though it does well for a niche market, it still has some flaws. The amino acids they include are at very low doses, and because of the fact that it is meant for the athletic community, it is not the best choice for anyone who is not a rigorous athlete. If you are looking for reduction in caloric intake and carb intake, this is not the right choice.

10. NOW Foods Garcinia


This effective carb blocker, NOW Foods Garcinia, utilizes the carb blocker benefits of the all natural ingredient garcinia cambogia. The garcinia cambogia that is is included in this product contains 50% HCA, which is the active carb blocking ingredient in garcinia cambogia. Overall it is a great vegetarian and all natural non-stimulant supplement.

What’s in it:

  • 1000 mg garcinia cambogia
  • 180 mg calcium

Who makes it: NOW Foods is a natural supplement producer that creates affordable dietary supplements without unnatural or synthesized ingredients. They have a commitment to health – both health of the human body and health of the environment. Their facilities are LEED Silver certified, and their ingredients are transparent, which means they are fully traceable all the way back to the original source.

Bottom line: This is a good carb blocking supplement that is affordable and easy to take. It provides you with the basics of carb blocking and is a good entry into the market if you are a first timer. However, there is additional calcium in this supplement, which should not be stacked with multivitamins or if you have diabetes.

Carb Blockers Guide

Carbohydrates are one of the three macronutrients that are necessary for your body. They are starches, sugars, and fibers that are packed with energy. They are in fruits, vegetables, grains, and even in milk, which means they are in a wide variety of food.

Their widespread availability makes them hard to avoid.

What Are Carb Blocking Supplements?

Carb blocking supplements block the absorption of certain carbohydrates, which reduces your caloric intake and lowers your blood sugar. They do this by inhibiting some of the enzymes that break down certain carbohydrates and starches. The common ingredients that are utilized in carb blockers include white kidney bean extract, garcinia cambogia, or a product called Phase 2.

The enzyme they inhibit is called amylase, which is made in the pancreas and the salivary glands. Garcinia cambogia is an exception, because it inhibits the enzyme citrate lyase. Top carb blockers block between 50% to 65% of the amylase that is supposed to break down these carbs, which means that not all ingested carbohydrates are blocked from being absorbed. This is good, because we do need carbs, just not as much of them sometimes.

Supplemental carb blockers are non-prescription, and you can by them over the counter. They use the same methods as prescription carb blockers. Some prescription carb blockers that are available are used for controlling blood sugar levels in patients that have type II diabetes. By reducing some of the carbs you absorb, the best carb blocking supplements are beneficial for weight loss.

Benefits of Carb Blockers

Carb blockers are helpful supplements to aid in weight loss. Paired with exercise and a healthy diet, carb blockers can improve your weight loss results. This means it speeds up the process of achieving your goal weight! It is also beneficial for getting past the most difficult weight to lose. The most difficult weight to shed is often the last you have to lose.

With that said, even the most effective carb blocking supplements are no magic pills. They are no fix for an unhealthy diet, although they can help slightly. For the best results, these products should be used in combination with a balanced diet and exercise plan.

Who May Benefit from a Carb Blocker?

Carb blocking supplements are great options for things like weight management, improving athleticism, improving blood sugar levels, and so on and so forth. Certain people who have specific health goals can really benefit from taking a carb blocker.

  • Those trying to lose weight – These are the people who can benefit the most from carb blockers. Carb blockers have numerous weight loss benefits, including blocking the absorption of carbohydrates, reducing appetite, promoting feelings of fullness, reducing caloric intake, reducing fat storage, and improving energy levels.
  • Those with high carbohydrate diets – Carb blockers have been shown to be the most beneficial to people who have high carb diets. This is because they reduce a certain percentage of the calories you absorb from carbohydrates only, and if you eat a lot of carbohydrates, carb blockers will make a bigger difference metabolically. If you have a high carbohydrate diet, carb blockers can help to fight weight gain from the carbs you consume.
  • Those who are athletes – Athletes can benefit from carb blockers in a couple of ways. Because carb blockers are effective weight loss supplements, they can help athletes reach a goal weight or body fat percentage in a shorter period of time. Some types of athletes that may gain the most benefit from this would be bodybuilders, wrestlers, and runners, among others. They can also benefit from the increase in athletic endurance. Those who participate in long workouts or enduranced based sports can potentially improve their performance through the use of carb blockers.

Many different types of people can benefit from carb blockers. Over 50% of Americans are at or above the recommended intake of carbohydrates as of 2015. The best carb blockers can help you to reduce your carbohydrate intake if you are above the limit or reduce your carbohydrate intake so that you may lose weight

How to Take Carb Blockers

Because the purpose of top carb blockers is to reduce the absorption of carbs, carb blocker supplements should be taken with a meal, ideally within 10 minutes before the food is consumed.

Some products have instructions that differ, so make sure to read the directions supplied by the product. Generally, two to three doses are taken per day. Be sure to closely follow dosage instructions, and do not take more than the recommended amount.

Side Effects of Carb Blockers

Carb blockers cause undigested carbohydrates to pass through the digestive tract, resulting in the fermentation of carbs. This can cause side effects such as gas, bloating, and abdominal pain.

If you have diabetes and take insulin, carb blockers may cause low blood sugar, so be sure to talk to your doctor before taking these products.

What to Look for in a Good Carb Blocker

A good carb blocking supplement can be identified by analyzing a couple of characteristics. One of the most important characteristics of a good carb blocker is the use of quality and effective ingredients at an effective dose.

There are a couple ingredients that are used most commonly in carb blockers. These include:

  • White kidney bean extract – White kidney bean extract is a substance known as phaseolamin that is found in white kidney beans and blocks amylase. By blocking alpha-amylase, less carbohydrate molecules are broken down into simple sugars. This means that less calories are absorbed and less sugar enters the bloodstream, which results in reduced body fat production. An effective dosage is between 500 and 3,000 mg per meal.
  • Garcinia cambogia Garcinia cambogia is a tree that grows in Southeast Asia and India, and produces a fruit with a rind that contains hydroxycitric acid. Hydroxycitric acid, also known as HCA, can prevent fat storage, increase endurance, and help control appetite. HCA does this by blocking the enzyme citrate lyase, reducing appetite, promoting satiety, and speeding the metabolism. It also reduces the amount of carbohydrates that are turned into body fat by disrupting this very process, which is called fatty acid biosynthesis. An effective dosage of garcinia cambogia is 500 to 1,000 mg taken per meal.
  • Phase 2 – Phase 2 is a proprietary ingredient used in carb blockers that is all natural. It includes non-stimulant white kidney bean extract. Phase 2 has been clinically proven to reduce the digestion and absorption of dietary starches by up to 66%. An effective doses of Phase 2 are 500 to 1,500 mg per meal.

Another aspect of a good carb blocking supplement that should be analyzed is the company that produced the product. A top carb blocking supplement will be produced by a reputable company. Researching a little bit about the manufacturer can help you get a sense for their reputation. Our list of top 10 carb blocking supplements does the research for your convenience.

Lastly, evaluating the price of the supplement compared to its value is important. Get a feel for the market price ranges for the supplement and find out if it is fairly priced for the amount it offers, and the ingredients of the supplement. If a supplement is priced higher than some alternatives, it will be noted on our list.

Final Thoughts

Now that you know everything about the best carb blockers and how to find them, we hope that you can find the right carb blocker for you! Carb blockers have helped many people reach their fitness goal and improve their health. Now you can be one of them!

Also, while you’re here, be sure to check out the rest of this website. You will find guides on nearly every supplement out there, from multivitamins to protein powders to weight-loss aids. Enjoy, and let us know if you have any questions!

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Written by Top10supps

The Top10Supps team has over 10 years of experience in navigating the online supplement market. We seek out and present you some of the most popular, best selling and highest reviewed supplement brands you can purchase. Find out more about us or if you wish you can contact the editor about this article.