GutRx Diarrhea & Loose Stools Bundle

Built on the most-studied probiotics for diarrhea — including Saccharomyces boulardii — to calm loose stools, reduce frequency, and protect your gut during antibiotics, travel, and acute upset.

Whether it's antibiotic-associated diarrhea, a bout of traveler's tummy, or chronic loose stools, the goal is the same: slow things down, firm them up, and restore balance to a disrupted gut. This bundle is built around the probiotic strains with the strongest research behind them for exactly that.

The GutRx Diarrhea & Loose Stool Defense Bundle combines the formulas best suited to reducing stool frequency and loose stools — anchored by Saccharomyces boulardii, one of the most studied interventions for diarrhea.

For adults — the diarrhea-defense system

• GutRx OVERGROWTH leads with Saccharomyces boulardii, the beneficial yeast that's among the most studied interventions for antibiotic-associated and traveler's diarrhea. Paired with resilient probiotics and natural antimicrobials (oregano oil, ginger), it helps restore microbial balance during and after gut disruption.
• GutRx BALANCE features Saccharomyces boulardii CNCM I-745 — the exact strain used in most diarrhea trials — alongside Lactobacillus rhamnosus GG and next-gen strains to re-establish gut flora balance and strengthen the gut barrier. Best taken before bed.
• GutRx DAILY delivers strains with extensive RCT evidence for antibiotic-associated and acute infectious diarrhea — L. rhamnosus, L. casei, B. longum, and B. lactis — in a 61-billion-CFU synbiotic with prebiotics for everyday support.
• GutRx COMPLETE rounds it out with a comprehensive 78-billion-CFU multi-strain blend of probiotics, prebiotics, and postbiotics — broad diversity for ongoing diarrhea prevention and microbiome recovery, especially after antibiotics. Taken with food.

For kids (ages 3–12)

• GutRx KIDS Gummies provide gentle pediatric support with Lactobacillus rhamnosus and L. reuteri — strains studied for children's diarrhea — plus prebiotic fiber, in a low-sugar daily gummy. One gummy daily.

Together they cover the full diarrhea-defense picture: lead with S. boulardii for acute and antibiotic-associated diarrhea, rebalance with clinically studied strains, support recovery with comprehensive diversity, and protect kids with age-appropriate strains.

What you can expect

• Reduced stool frequency and firmer, more formed stools
• Protection during antibiotics, travel, and acute gut upset
• Faster microbiome recovery after disruption
• Age-appropriate support for the household

Every GutRx formula is third-party lab tested with downloadable COAs, made in the USA, non-GMO, and free from major allergens — and backed by our 90-Day Gut Health Guarantee.