The 13 Best Carb Blockers for 2025 – Reviewed & Rated

Welcome to our article dedicated to Carb blocker. Quick, make a wish! If you are on a diet, you likely thought about “eating and not gaining weight” without even thinking too much about it.

Each time we consume larger and larger portions of food and more calories, making weight control almost impossible. Wouldn’t it be nice to reduce the number of calories we absorb with each meal?

Carb blocker is a supplement that can reduce the absorption of fats from the diet. Even if it doesn’t allow you to eat as much as you want without gaining weight, its “fat capture” effect may be useful for losing a few extra pounds. If your weight loss diet doesn’t convince you, be sure to check out this new Healthspring article.

Right here we had selected some of the best carb blockers for you that are listed below.

Things to Consider Before Buying Carb Blocker

Carb blockers is a compound obtained from chitin, the main component of the crab and shrimp shell. This product binds to food fat and prevents its absorption, reducing caloric intake and stimulating the breakdown of stored fat. People allergic to shellfish and vegans find a vegetable alternative available to them.

What Is Carb Blocker and How Does It Work?

Carb blocker is a polysaccharide (i.e. a molecule made up of chained sugars, such as starch) that is part of the shell of crustaceans. The cosmetic and pharmaceutical industries have been able to exploit this compound, commonly considered a waste of prawns and crabs.

These qualities have catapulted the popularity of chitosan, making it one of the most popular “weight loss” supplements. Although some people have been able to improve their figure thanks to this article, some experts do not hide their scepticism.

In the field of dietetics and nutrition, carb blocker supplements are used for weight control. This compound has demonstrated the ability to attract and bind to the fat particles of food, preventing its intestinal absorption. In this way, the elimination of lipids increases, reducing body weight.

Can a Carb Blocker Help Me Lose Weight?

Carb blocker is a compound that is easy to obtain and considered “generally safe” by nutrition experts. For this reason, you can find supplements based on this molecule in speciality stores, online, in pharmacies and herbalists. Recently, we can also find this product infamous supermarket chains.

However, the effective effectiveness of carb blocker on weight loss is a topic that has given rise to numerous discussions in the medical community. Numerous studies have been conducted on this article, finding contradictory results.

The Cochrane guide combined the available data, creating a meta-analysis.

Therefore, it can be seen that carb blocker could (modestly) improve weight loss in the people studied. Also, this reduction in body mass is accompanied by better control of cholesterol and blood pressure.

Control of these two parameters will be crucial to improve your health by reducing the appearance of cardiovascular disease.

However, this Cochrane meta-analysis has as many light points as shadows. Experts admit that this large-scale study has several weaknesses, which require further analysis of this supplement in the future. The following list summarizes the main objections of scientists to experiment with chitosan:

• The Duration of The Studies. The studies analyzed have a duration of four to six weeks. This period, according to experts, does not allow to fully appreciate the effects of chitosan.
• The Subjects of The Studies. The people who underwent the studies had different habits, nutrition, activity levels and health conditions. All of these factors have a significant influence on weight loss but have not been considered by most surveys.
• Conflicts of Interest. Studies funded by the producers of carb blocker supplements themselves could be biased, highlighting the best aspects of their products and leaving out the negatives.
• General Conclusions. The safest way to lose weight is by adopting a healthy lifestyle. Although a carb blocker can accelerate body mass loss, its effect will only be significant when combined with diet and exercise. Experts fear that its indiscriminate use will lead people to underestimate what helps weight loss.

What Is Vegetable Chitosan?

Although potentially allergen-free carb blocker supplements exist, some people prefer to avoid this shellfish derivative.

Furthermore, if you are vegan or vegetarian, the idea of consuming a product of animal origin is certainly unacceptable for you. If that’s your case, don’t despair. There is an alternative for you.

Vegetable carb blocker is a compound obtained from a mushroom (generally aspergillus niger ). its manufacturers ensure that this supplement has a “fat collection” activity similar to that of marine chitosan. Also, it would be less allergenic and provide a small amount of fibre.

The truth is, we have very little information on aspergillus niger- based supplements. Although it is considered a safe compound and an alternative to animal chitosan, people with weakened immune systems should be especially cautious.

Who Can Benefit from A Carb Blockersupplement?

You may be wondering if carb blocker is the right weight management supplement for you. in the following list, you can find several features that could determine success or failure while using this article.

If you see yourself reflected in one or more of the following sections, you may be able to benefit from a carb blocker.

• You Are Young and Healthy.
• You Are Moderate Overweight, Which Does Not Require Medical Intervention.
• You Can’t (or Don’t Want To) Use Fat Burning Supplements.
• Think About Combining the Use of Carb Blocker with Diet and A New Exercise Program.
• Your Diet Is Healthy.

Unfortunately, weight loss is one of the most complex and difficult to control processes in the health sector.

For this reason, the remodelling of our figure must be accompanied by a series of healthy habits (diet, exercise, adequate rest and abstention from drugs). This will be the only way to achieve fat loss goals.

How to Use Carb Blockersupplements?

Carb blocker supplements are generally distributed in capsule form, with a much rarer powder or liquid preparation. These articles usually contain clear instructions that will allow you to make proper use of the article.

In case you still have doubts, we have prepared a list that clarifies the main aspects of the administration of these supplements ( 2, 5, 6 ).

• Dose: The dose of carb blocker usually ranges from 600 to 2500 milligrams per day, generally divided into several doses. The most common regimen is 250 mg, four times a day.
• Time of The Day: The main carb blocker producers recommend taking their product before meals. In the studies analyzed, no particular emphasis is given at the time of integration. Yes, the effect of ‘collecting’ the fats of this molecule that takes place during the passage of food through the intestine is taken into consideration.
• Diet: In Official Studies Conducted with Carb Blockersupplements, People Follow a Healthy, Normal or Low-Calorie Diet.

On many occasions, carb blocker supplements are marketed as items that will allow you to eat “anything you want”.  However, remember that this derivative of molluscs can capture 30% of the dietary fat.

Although it can minimize the effect of a “binge”, it cannot prevent us from gaining weight if our habits are not healthy.

Does Carb Blocker cause a “Rebound Effect”?

When we speak of the “rebound effect” we refer to that phenomenon which causes part or all of the weight loss to resume once the intake of a low-calorie diet or a slimming product is finished.

The event of regaining the pounds lost after a long and difficult weight loss process is daunting for anyone. Is this setback more likely to occur with the use of chitosan?

Most sellers of this article claim that their product is not associated with the appearance of a “rebound effect”. Unfortunately, scientific studies on this supplement have not analyzed what happens once the use of carb blocker is abandoned.

To minimize the chances of this effect appearing, in this guide, we give you the following tips.

• Change Habits, Not Pants Sizes – Your goal during a weight loss program should be to adopt healthy habits. Oddly enough, focusing only on losing size or reaching a certain weight as a goal will increase the chances of rebound.
• Focus on Your Diet – Use carb blocker supplements in the context of a healthy diet. Do not use them as “fat catchers” to consume “junk” or high-calorie foods thinking that they have no repercussions.
• Dance, Run or Jump – It’s time to choose a physical activity that stimulates you. Dance, take a martial arts course or functional training, no matter what. The important thing is to get used to daily exercise. This simple action will consume calories and activate your metabolism, preventing you from gaining or regaining weight.
• Be Positive – An optimistic and tenacious attitude towards the setbacks that may arise during life will help you stay in your weight. Do not be discouraged if you see that the scale indicates a greater weight after the holidays. You have been able to lose weight once, and you can do it again!

Are Carb Blocker Supplements Safe?

Carb blocker is considered a “generally safe” supplement by most experts. As such, it is suitable for being marketed as a food supplement. Its side effects are annoying but are not considered dangerous.

These effects appear more frequently during supplementation with high doses of carb blocker(more than 2,500 mg/day):

• Gastrointestinal Complaints
• Nausea
• He Retched
• Diarrhoea
• Flatulence

This preparation has been used successfully in people with chronic diseases (such as kidney failure), although we recommend chronic patients to consult their doctor before starting any new treatment. This advice also extends to pregnant women and minors.

The main problems that can appear during the consumption of carb blocker supplements in healthy people are drug and nutritional interactions.

This article may interfere with the actions of warfarin, an anticoagulant drug. Furthermore, the abuse of carb blocker could hinder the absorption of fat-soluble vitamins (a, d, e and k).

Purchase Criteria

When an item is primarily of animal origin, such as chitosan, finding a good quality supplement is essential. The composition of this article (and that of its plant alternative) must be carefully examined to purchase a safe and effective product. Be guided by the following purchase criteria:

• Vegan or Vegetarian Food
• Nutritional Allergies
• Combination of Ingredients
• Storage and Expiration
• Value for Money

Vegan or Vegetarian Food

If you are vegan, choose a product based on aspergillus niger or another mushroom suitable for human consumption.

Do not confuse with some supplements that “vegetable chitosan” which has marine-origin carb locker wrapped in a cellulose capsule. These items are not suitable for vegans or vegetarians.

Nutritional Allergies

Most shellfish allergies are due to an intolerance to the meat (and not the shell) of these animals. For this reason, some producers of marine carb blockers claim that their product can also be consumed by those who are allergic to shellfish.

However, if you are not sure of the extent of your allergy, it is better to opt for a product based on vegetable chitosan.

Remember that carb blocker supplements can also contain coating substances or excipients that act as allergens. If you are allergic to soy, lactose, gluten or nuts, among others, request a product that is correctly labelled and proves to be allergen-free.

Combination of Ingredients

It is not uncommon to find supplements that combine carb blocker with other fat burning and “fat catching” supplements.

It is also very common that this product is combined with vitamins and minerals that contribute to the normal metabolism of fats and carbohydrates. The following combinations are the most popular:

• Carb Blocker Garcinia Cambogia
• Carb Blocker and Green Tea Extract
• Carb Blocker and Chromium
• Carb Blocker and Artichoke Extract
• Carb Blocker and Glucomannan
• Carb Blocker and Vitamin C

From this guide, we do not recommend the indiscriminate use of combinations of weight loss supplements. Side effects can be unpredictable and dangerous, as they have not been studied with sufficient depth.

The combination of carb blocker and Garcinia Cambogia has been studied, probably safe for integration in healthy people.

Storage and Expiration

Carb blocker seems to be a compound very resistant to the passage of time. However, it is recommended to keep it in a cool, dry place away from aggressive temperatures and odours. This molecule will lose its ability to progressively bind fats after the expiration date.