Gundry MD
Lectin Shield®
66/100
SUPPIE SCORE
35/100
EFFICACY
Medium
SAFETY
98/100
CLEANLINESS
What Does Lectin Shield® Do?
Lectin Shield uses plausible gut-soothing ingredients but lacks clinical trials proving lectin-blocking efficacy at these doses. The biggest red flag is undisclosed iodine from bladderwrack for thyroid patients.
Does Lectin Shield actually block dietary lectins, or is this marketing hype?
What evidence supports the 300 mg D-Mannose dose for lectin binding?
Can I take Lectin Shield with other Gundry MD products like BioComplete 3?
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What Are the Benefits of Lectin Shield®?
Based on proven scientific research
Digestive ComfortMild
Lectin DefenseSlight
Gut Barrier SupportMild
Good For:
What Are the Side Effects of Gundry MD Lectin Shield®?
Always consult your health practitioner if in doubt.
RiskMedium Risk
Overview
•Generally well-tolerated with minimal reported side effects.
•Bladderwrack provides iodine—avoid if thyroid disorder or on thyroid medication.
•Not recommended during pregnancy due to lack of safety data.
•Contains shellfish-derived N-Acetyl D-Glucosamine; avoid with shellfish allergy.
•May interact with blood thinners due to seaweed content.
•Rice flour is gluten-free but confirm batch testing for cross-contamination.
Potential Side Effects
Negative Interactions
Allergens
Shellfish (from N-Acetyl D-Glucosamine)
Inactive Ingredients
Vegetable cellulose
GoodRice flour
Low RiskWhat Are the Ingredients in Gundry MD Lectin Shield®?
D-Mannose
300mg
Okra Extract
200mg
Larch Arabinogalactan
200mg
Methylsulfonylmethane (MSM)
100mg
Bladderwrack
100mg
N-Acetyl D-Glucosamine
100mg
Sodium Alginate
100mg
Sialic Acid
50mg
Lectin Shield Proprietary Blend
1,150mg
Vegetable Cellulose
Rice Flour
Dosage & Bioavailability
How the active doses and forms in Lectin Shield® compare to the research.
•D-Mannose is listed at 300mg per serving; without a source-specific reference range, dose adequacy cannot be graded.
•Okra Extract is listed at 200mg per serving; without a source-specific reference range, dose adequacy cannot be graded.
Frequently Asked Questions
Common questions about Gundry MD Lectin Shield®