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Do Carb Blockers Work? What Are Their Side Effects?

Do Carb Blockers Work? What Are Their Side Effects?
Writer and expert8 years ago
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Carb blocking supplements prevent digestive enzymes that break carbohydrates down into single sugar units. These supplements make it to where the carbs that remain in the larger units will not make it into your bloodstream because the small intestine only absorbs single sugars. Basically, this helps prevent spikes in blood sugar and can make it easier to lose weight because you will not absorb all of the calories from the carbohydrates consumed.

Carb blockers can however cause digestive side effects and lead to some serious problems if you are a diabetic, so make sure to talk to your doctor to make sure these kinds of supplements are safe for use.


How Do Carb Blockers Work?

Some people are prescribed carb blockers from doctors to help lower blood sugar with those who have diabetes. The prescription medicines are made by fermenting microorganisms. Carb blockers sold in pharmacies are made from white kidney beans, or cannellini beans, which contain a natural substance that block the enzymes used to digest carbohydrates.

carb blockers

White kidney bean extract is actually marketed as a weight loss supplement. A group of overweight men and women took white kidney bean extract for 12 weeks, and lost about 7 pounds! The same study also showed that bean extract lowered blood glucose, but it depended on the amount consumed as well.

Side Effects of Carb Blockers


Digestive Tract Distress: When the fermentation of carbs occurs, it produces extra gas. These side effects include gas, bloating, and abdominal pain. Some users report an upset stomach or pain and diarrhea after taking carb blockers.

Low Blood Sugar: Do not take carb blockers if you take insulin or other gastrointestinal medications, until you talk to your doctor. Carb blockers lower blood sugar, and mixing them with other diabetic medications may cause blood sugar to drop dangerously low.

Allergies and Other Warnings: Some brands of these supplements contain wheat extract, fish, soy and other ingredients that are common allergies. Make sure to read the labels and make sure you are not allergic to any of the ingredients. Also, pregnant women should not take this supplement. If you have any type of gastrointestinal disorder, liver disease or a problem with your kidneys, don’t take carb blockers until you consult your doctor.


Take-Home Message


While carb blockers do help people lose weight, there are some side effects that might cause some uncomfortable feelings that might not be worth it. Everyone is different though. If you have any gastrointestinal disease, please consult your doctor before considering taking any of these kinds of supplements. A drop in blood sugar is possible which could cause some major problems. Just like every other supplement, side effects are possible.

Our articles should be used for informational and educational purposes only and are not intended to be taken as medical advice. If you're concerned, consult a health professional before taking dietary supplements or introducing any major changes to your diet.

Writer and expert
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