User reviews of carb blockers suggests that these supplements can have benefits for appetite control, weight loss and for modulating blood sugar levels,
Carb blocking supplements usually contain phaseolamin, which is an active compound found in White Kidney Bean extract (Phaseolus Vulgaris). Phaseolamin inhibits the digestion of carbohydrates by blocking the effects of the enzyme that breaks these sugars down in the gastrointestinal tract.
This can effectively lower the amount of sugar absorbed into the body after eating a carbohydrate-rich meal. Instead, these calories are expelled from the body in an undigested form.
Carb blocking reviews and research results provide evidence of a modest benefit for weight loss, but some results have been mixed. Furthermore, these supplements must be used along with a healthy diet and exercise in order to achieve long-term weight management goals.



- Helps reduce the absoprtion of carbohydrates
- Suppresses the appetite & feel full
- May promote weight loss in a healthy diet
Carb Blockers Review
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Long-chain carbohydrates (polysaccharides) like starch, glycogen and cellulose found in foods are broken down into smaller carbohydrates during digestion.
A digestive enzyme called alpha amylase is used for this purpose. Alpha amylase works by dissolving the alpha bonds in such polysaccharides. This results in the separation of numerous smaller sugars that comprise the long-chain carbs.
Polysaccharides are broken down into smaller molecules called oligosaccharides. These molecules are comprised of relatively small numbers of simple sugars called monosaccharides.
Monosaccharides include glucose (dextrose), fructose, galactose and others. Simple sugars (mainly glucose) are used for energy synthesis, but if consumed in excess amounts, they can result in weight gain as these unused sugars are stored as body fat.
Research reviews of carb blocking supplements show that phaseolamin allows for some ingested long-chain carbs to pass through the colon unmetabolized.
This occurs because phaseolamin is a natural alpha amylase inhibitor. It stops alpha amylase from breaking down the polysaccharides. In effect, they are excreted without being broken down metabolically.
Carb Blocker Reviews for Weight Loss
By partially blocking the metabolism of long-chain polysaccharides, Phaseolus vulgaris extract carb blockers mimic the effects of reduced caloric intake. This has proven beneficial for enhancing fat loss.
According to user reviews, starch blocking supplements are often taken in anticipation of eating carb-rich foods to partially counteract the effects of these unhealthy foods on body weight.
Many testimonials on online review sites discuss taking this supplement before a holiday party or family dinner so that foods that are heavy in carbohydrates can be enjoyed without feeling guilty.
However, these supplements should not be seen as a license to consume whatever foods you want. No carb blocker is 100% effective and the best they can do is modestly limit the number of calories absorbed by the body.
Instead, these supplements are best when taken as part of an overall commitment to a healthy diet and active lifestyle. User experiences and study results provide evidence that supplements like White Kidney Bean extract can enhance fat loss efforts, but they should not be relied on as a first-line intervention.
Research Study Results on Phaseolamin
In one randomized, placebo-controlled, double-blind study that lasted 4 weeks, decreased waist size was noted in relation to Phaseolus vulgaris extract administration.
25 healthy adults were given either two 1000 mg treatment doses daily, or placebo agents instead. All subjects engaged in a comprehensive weight loss program during the study. This included diet, exercise and behavior intervention measures.
Results showed improvements in body weight and waist circumference. Treatment group subjects lost an average of 8.7 pounds relative to a 1.7-pound average weight loss in controls.
Average waist circumference reductions in treatment subjects was 3.3 inches compared to an average 1.3-inch decrease in controls.
This study concluded that combining a phaseolamin-containing carb blocker diet pill with proper diet, exercise and certain behavior interventions can yield rapid and significant reductions in body weight and fat mass.
Users of carbohydrate inhibiting supplements often report feeling less hungry. They say that they get full with less food and feel “lighter”.
Carb Blocker Reviews for Diabetes
Studies into the effects of Carb Blockers have demonstrated antidiabetic properties. Phaseolamin seems to increase sensitivity to insulin and improve utilization of glucose.
People with prediabetes (impaired glucose tolerance) and type 2 diabetes mellitus report improvements with controlling diabetic symptoms while taking Carb Intercept pills with Phase 2 extract.
In studies involving subjects with type 2 diabetes, significant improvements were noted concerning blood-glucose modulation.
Research shows that Phaseolus vulgaris extracts may reduce risk factors for the formation of cataracts related to diabetic neuropathy. This is attributed to anti-oxidant effects as well as improved blood glucose control.
Carb Blocker Studies and Cholesterol
Other carb blocker studies show positive effects for blood lipid profiles and long-term cardiovascular health.
White kidney bean extract is associated with decreasing triglycerides and LDL cholesterol which contribute to the formation of arterial plaque. Arterial plaque accumulations can lead to clogged arteries (atherosclerosis) and eventually cardiovascular disease.
Review of Carb Blocker Safety
Multiple studies have addressed the safety of carb blocking supplements that contain phaseolamin extract.
Phaseolamin is rated as possibly safe for use up to 3 months in doses up to 3 grams daily. Some people experience temporary side effects including gas, bloating, nausea, diarrhea and/or vomiting.
The safety of carb blockers with phaseolamin has not been established for pregnant or nursing women. Those scheduled for elective surgeries should stop using carb blockers at least a couple weeks before their procedures.
Many carb blocking diet pills contain additional ingredients such as caffeine, green tea extract, and chromium. Depending on the specific formulation of product you choose, there may be additional side effect risks.
Seek medical advice before combining usage of phaseolamin carb blockers with other substances with antidiabetic effects. This can cause blood-glucose levels to drop excessively.
User review of carb blockers suggests that there is a relatively low incidence rate of side effects, but these products may not be appropriate for all individuals.
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Article last updated on: March 12th, 2018 by Nootriment