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Gut & Immunity
Gut Shield Probiotic
$26$34Save $8
50 billion CFU per serving across 8 clinically studied strains
Delayed-release capsule survives stomach acid, delivers bacteria to the intestine
Includes both Lactobacillus and Bifidobacterium genera for full-spectrum coverage
Shelf-stable — no refrigeration required
CFU count guaranteed at expiration date, not just at manufacture
Size
🚚 Ships within 24 hrs↩️ 60-day returns🔒 Secure checkout🔬 Third-party tested
Estimated delivery: Order today, receive by May 9–12. Ships from Austin, TX.
Your gut contains more bacteria than cells in your body. Most of them are on your side — if you give them the right support.
The human gut microbiome contains an estimated 38 trillion bacteria, representing over 1,000 species. They regulate digestion, synthesize vitamins, train your immune system, produce neurotransmitters, and maintain the intestinal barrier that keeps pathogens out of your bloodstream. When the microbiome is balanced, you barely notice it. When it's disrupted — by antibiotics, stress, processed food, illness — the effects ripple: bloating, irregular digestion, lowered immunity, brain fog, food sensitivities.
Most probiotic products fall short in two ways. First, CFU count: 1–5 billion CFU barely moves the needle when you're trying to restore or reinforce a 38-trillion-organism ecosystem. Therapeutic research typically uses 10–50 billion CFU. Second, delivery: stomach acid has a pH of 1.5–3.5 — hostile enough to kill most probiotic bacteria before they reach the intestine. A standard capsule offers essentially no protection.
Gut Shield uses a delayed-release (DR) capsule that resists stomach acid and dissolves in the more neutral pH of the small intestine. This means the 50 billion CFU you take actually arrive at their destination. The eight strains span both Lactobacillus and Bifidobacterium genera, covering small intestine colonization, large intestine colonization, and specific mechanisms like L. acidophilus for lactase production and B. longum for colon health and immune modulation.
Key features
50 billion CFU
Therapeutic-range probiotic dose across 8 clinically studied strains. CFU count guaranteed at expiration, not just at manufacture.
Delayed-release capsule
Resists stomach acid (pH 1.5–3.5) and opens in the intestine where probiotic bacteria can colonize and work.
8-strain formula
Lactobacillus and Bifidobacterium genera provide full-spectrum coverage: upper and lower GI tract, motility, and immune modulation.
Gut barrier support
Key strains reinforce tight-junction proteins in the intestinal wall, reducing intestinal permeability ("leaky gut").
Shelf-stable
No refrigeration required. Viability maintained through expiry at room temperature when stored away from heat and humidity.
Third-party verified
Strain identity, CFU count, and purity verified per batch by an independent lab. Not just a proprietary blend.
Supplement facts
| Serving size | 1 capsule |
| Servings per container | 30 |
| Probiotic blend (50 billion CFU) | — |
| Lactobacillus acidophilus | 12B CFU |
| Lactobacillus plantarum | 10B CFU |
| Lactobacillus rhamnosus | 8B CFU |
| Lactobacillus reuteri | 5B CFU |
| Bifidobacterium longum | 7B CFU |
| Bifidobacterium breve | 4B CFU |
| Bifidobacterium lactis | 3B CFU |
| Bifidobacterium infantis | 1B CFU |
| Other ingredients | Microcrystalline cellulose, delayed-release capsule (HPMC, gellan gum) |
| Allergens | None. Gluten-free, soy-free, dairy-free, vegan. |
| Suggested use | Take 1 capsule daily, preferably with breakfast or 30 minutes before a meal. |
| Storage | Store in a cool, dry place away from direct sunlight. No refrigeration required. |
| Country of manufacture | USA (NSF-certified, cGMP facility) |
How we compare
| Feature | Erivelle Gut Shield | Standard capsule probiotics | Refrigerated probiotics |
|---|---|---|---|
| CFU per serving | 50 billion ✔ | 1–10 billion ✘ | 10–30 billion (varies) |
| Delayed-release delivery | ✔ | ✘ Standard capsule | Varies |
| CFU guaranteed at expiry | ✔ | At manufacture only ✘ | Varies ✘ |
| Both Lacto & Bifido genera | ✔ | Often only Lactobacillus ✘ | Varies |
| Shelf-stable (no refrigeration) | ✔ | ✔ | ✘ Requires cold chain |
| 60-day guarantee | ✔ | ✘ | ✘ |
Questions about this product
CFU (colony-forming units) is the count of live bacteria per serving. Many supermarket probiotics contain 1–10 billion CFU. Research on IBS, antibiotic recovery, and immune modulation tends to use 10–50 billion CFU. At 50B CFU across 8 clinically studied strains, Gut Shield targets the upper end of therapeutic dosing used in published studies.
Stomach acid has a pH of 1.5–3.5 — hostile enough to kill most probiotic bacteria before they reach the intestine. Standard capsules begin dissolving in the stomach. The delayed-release capsule resists stomach acid and dissolves in the small intestine, delivering far more live bacteria to where they colonize and work.
No. We use shelf-stable strains that remain viable at room temperature through the expiration date when stored properly. Keep the bottle sealed, away from heat and direct sunlight. No refrigeration required, which also means no cold chain risk during shipping.
Yes — this is one of the most evidence-supported uses for probiotics. Space the probiotic at least 2 hours away from the antibiotic dose. Continue for at least 4 weeks after completing the course to fully restore the disrupted microbiome.
Most people notice digestive improvements — reduced bloating, more consistent bowel movements — within 1–2 weeks. Broader effects on immunity and systemic inflammation take 4–8 weeks of consistent use. The gut microbiome shifts gradually with sustained supplementation.
Yes. Probiotics have an excellent long-term safety profile in healthy adults. Daily use supports sustained colonization and microbiome diversity. There's no evidence of tolerance buildup or dependence from continuous probiotic supplementation.
What customers say — 163 reviews · 4.7 avg
★★★★★April 22, 2025
Bloating gone after three weeks
I've dealt with bloating after meals my entire adult life. I assumed it was normal. A friend who's a dietitian told me to try a high-dose probiotic with delayed release specifically. She said most probiotics die before they get to the intestine. Three weeks in, I notice a real difference. Less bloating, better digestion, more comfortable after eating. Haven't changed anything else in my routine.
★★★★★March 30, 2025
Essential after antibiotics
Had to do a 10-day antibiotic course in February. My GI doc specifically mentioned taking a probiotic with at least 30 billion CFU and delayed-release capsule. This one checked both boxes. Two hours after each antibiotic dose, I took this. My gut recovered much faster than after my last antibiotic course. Reordering.
★★★★★February 18, 2025
Finally works — because it actually reaches the gut
I tried four other probiotic brands with zero results. A gastroenterologist explained to me that most probiotics die in your stomach acid. The delayed release capsule here is the key difference. After six weeks I'm having the most consistent digestion I've had in years. Wish I knew about this earlier.