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Deflect - Lectin Blocker (Blood Type B)

The original shield against lectins. Designed to block problematic food lectins known to negatively impact Blood Type Bs.

Select your blood type: O A B AB

Sometimes, Avoids are simply unavoidable.

Meet Deflect B, your first line of defense against lectins in Avoid foods. A class of proteins that bind to the different antigens in each blood type, lectins can harm immune and digestive function. This causes a variety of health problems including intestinal and bowel irritation, bloating, weight gain and lethargy. Shielding your biology from these dangerous molecules is important.

An exclusive blend of glucosamine, pectin and larch arabinogalactan, Deflect B is crafted for optimal absorption by Blood Type Bs. Dr. Peter D'Adamo's uniquely designed formula provides specific blocking sugars that attach to receptors on lectins, preventing them from weakening immune and digestive health.

  • Knocks out specific Type B dietary lectins before they hinder digestion
  • Enhances gut health
  • Supports proper hormone balance
  • Promotes weight loss
  • Soothes + balances immune response

Our lectin-fighting team includes:

Larch Arabinogalactan
Binds dietary lectins and reduces bacterial adherence of detrimental species such as E. coli. Larch arabinogalactan is also an excellent source of dietary fiber and has been shown to increase the production of short-chain fatty acids (SCFA), principally butyrate.

N-Acetyl D-Glucosamine (NAG)
Acts like a magnet for lectins in foods such as wheat and other grains. When lectins bind to the NAG on your cells, they impair their functioning and promote inflammation. The NAG in Deflect serves as a distractor, picking up stray lectins without interrupting your metabolism.

Works by inhibiting carbohydrate-binding lectins. Inhibiting this binding prevents the activation of immune cells in the gut. Pectin is a common component of several fruits and a soluble fiber used to improve digestive health and stave off gastrointestinal discomfort.

Click the Play button to hear Dr. Peter D'Adamo discuss Deflect.

While it can't magically turn Avoids into Beneficials, Deflect B may assist in healthy weight loss and the repair of pre-existing lectin damage. With the help of our formula, you can support a balanced digestive system.

Dosage & Information

For maximum benefit: take two (2) capsules two to three times daily with meals
(As a dietary supplement or as directed by a physician)

120 capsules
Is this product vegetarian? No
Contains crustacean from N-Acetyl D-Glucosamine (isolated from crab shell)

Does not contain: sugar, salt, gluten, wheat, yeast, corn, soy, eggs, dairy, preservatives, color, flavors or artificial ingredients


Recommended Reading

Following The Blood Type Diet On the Go Lectins & Blood Types The Fad Diet That Might Just Save Your Life

Practitioner Technical Information

Must login as a practitioner to have access.

Deflect TRM

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.


No. Deflect - Lectin Blocker is a blood-type specific supplement that shields cells from incompatible lectins. It is a personalized supplement for each blood type and is available for blood types O, A, B and AB.

You must know your blood type to find the Deflect formula that’s best for you. The Home Blood-Typing Kit is an easy way to get started. It works in under 10 minutes to reveal your results right at home.

Directions: Two (2) capsules with two (2) largest meals per day as a dietary supplement or as directed by a physician. Deflect helps block lectins from Avoid foods known to negatively impact health.

Lectins are naturally occurring proteins found in many common foods that can interact with the cells of the digestive tract, immune system and circulation, and cause damage or interfere with metabolism. They interact with the cell’s surface and can often cause cells to clump, giving lectins the name “molecular Velcro.” Incompatible lectins (from foods on your Avoid list) can attach to your digestive tract and wreak havoc. Potential effects include inflammation, gas, bloating, water retention, weight gain, headaches, fatigue, hormonal imbalance and more. Long before low lectin diets became a hot topic in nutrition, Dr. Peter D’Adamo identified the critical secret to their control: Your Blood Type. Certain foods have lectins that react specifically to a blood type, and The Blood Type Diet helps you understand which foods work best for you. To help prevent harmful lectins from negatively impacting your health, find out your blood type and learn which foods to avoid. The Blood Type Diet Intro Pack helps you get started with an at-home testing kit and Dr. D'Adamo's best-selling book Eat Right 4 Your Type. In addition to following the food list recommendations for Beneficials and Avoids, you can turn to Deflect - Lectin Blocker for cheat days or un-avoidable moments.

Common symptoms of lectin sensitivity include digestive upset, bloating, immune hypersensitivity, fatigue, poor memory/comprehension and hormonal imbalance.

Paradoxically, tissues weakened by prolonged illness will often be more sensitive to food lectins and will usually not fully heal and regenerate until these lectins are removed from the diet and the system has time to heal.

Here’s a quick list of common foods with harmful lectins to avoid for each blood type:

  • Blood Type O: Wheat, Soybean Oil, Peanut, Kidney Bean
  • Blood Type A: Lima Bean, Tomato, Eggplant, Garbanzo Bean
  • Blood Type B: Chicken, Corn, Soy, Lentil
  • Blood Type AB: Chicken, Corn, Banana, Fava Bean

To learn more about foods on your Avoid list along with Beneficial foods to help promote overall wellness, read Dr. D’Adamo’s New York Times best-selling book, Eat Right 4 Your Type.

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