Probiotics

Probiotics introduce beneficial bacteria to the gut, improving gut flora and enhancing the integrity of the intestinal barrier. They can help restore a healthy microbial balance, which is often disrupted in leaky gut.

Smarter Gut Health Probiotics - Superior Digestive & Immune Support from 100% Soil-Based Probiotic - Includes Premium Prebiotic Preticx to Help Keep Good Bacteria Healthy & Growing (30 Servings)

NOW Supplements, Saccharomyces Boulardii, 5 Billion CFU Probiotic, 60 Veg Capsules

L-Glutamine

This amino acid is essential for the repair and growth of intestinal cells. It's often recommended to support the intestinal lining and can help reduce intestinal permeability.

Nutricost L-Glutamine 800mg, 180 Capsules - Gluten Free, Non-GMO

Zinc

Zinc is involved in maintaining the intestinal barrier function and can help reduce gut permeability. It's often used in the form of zinc carnosine.

Life Extension Zinc Caps, zinc 50 mg, zinc citrate, Support the body's immune defenses, ultra-absorbable, vegetarian, non-GMO, gluten-free, 90 vegetarian capsules

Quercetin

This plant flavonoid is believed to help seal the gut lining by promoting the assembly of tight junction proteins, thus making it harder for particles to leak through.