What 'leaky gut' actually means
The lining of your intestine is a single layer of cells held together by tight junctions. It has to be selective: nutrients through, bacterial fragments and undigested proteins out. Increased intestinal permeability — the clinical term behind the popular phrase 'leaky gut' — means those junctions have loosened and material is crossing that should not be.
It is a measurable phenomenon, not a fringe idea. Permeability is documented in inflammatory bowel disease, celiac disease, NSAID use, heavy alcohol intake and after intense endurance exercise. What is far less settled is how often it explains everyday bloating, irregular stools and food sensitivities — and honest medicine says so.
What people usually bring us is a cluster: bloating after most meals, unpredictable bowel habits, a growing list of foods that no longer sit well, and often skin or joint symptoms alongside. Some of that is permeability. Some is a food intolerance, SIBO, a motility problem, or IBS driven by the gut-brain axis. The protocol only makes sense after we know which.
How these peptides work in the gut
BPC-157 is a synthetic fragment of a protein found naturally in human gastric juice — the gut is where it originates and where its research is deepest. In animal models it accelerated healing of gastric ulcers, intestinal anastomoses and NSAID-induced damage, and it upregulated growth factors and new blood vessel formation in the healing tissue. Taken orally, it survives gastric acid well enough to act locally on the lining, which is why gut protocols sometimes use a capsule rather than an injection.
Glutathione is the gut's dominant antioxidant, and intestinal cells are among the most metabolically stressed in the body. Depleted glutathione is associated with more oxidative damage to the epithelium; restoring it lowers the background inflammatory load that keeps tight junctions loose.
NAD+ supports the mitochondrial energy production intestinal cells depend on — the lining replaces itself roughly every three to five days, which is metabolically expensive work. NAD+ is a supporting player here, useful mostly when fatigue accompanies the gut symptoms.
Researched benefits
Lining repair, not masking
The aim is a structurally healthier epithelium, so symptoms improve because the barrier improved — not because a signal was blocked.
Less post-meal bloating
Clients commonly report meals sitting more comfortably and less abdominal distension within the first several weeks.
Wider food tolerance
As the barrier tightens, previously reactive foods often become tolerable again — reintroduced deliberately, one at a time.
Support alongside NSAIDs
For clients who need anti-inflammatories for pain, BPC-157 has the most direct preclinical evidence against NSAID-related gut damage.
Lower oxidative load
Glutathione addresses the oxidative stress that both results from and perpetuates intestinal inflammation.
Downstream symptom relief
Many clients find that skin clarity, joint stiffness and energy improve as gut inflammation settles — the gut rarely acts alone.
BPC-157 is not FDA-approved for any condition, and it is not available as a compounded prescription in every state. Its gut evidence — genuinely impressive in breadth — is almost entirely animal and cell research; there are no large human trials for leaky gut, IBS or food sensitivities. Glutathione's role in intestinal antioxidant defense is well established biochemically, but that is not the same as trial evidence for symptom relief. We prescribe these as adjuncts to a real diagnostic workup, not as a substitute for one, and we say plainly where the human data ends.
How gut protocol is dosed
The workup comes first. Celiac serology, inflammatory markers, a stool study where indicated, and — depending on the picture — evaluation for SIBO or referral to gastroenterology. Blood in the stool, unexplained weight loss, anemia, nighttime symptoms or a family history of inflammatory bowel disease means specialist evaluation before any protocol.
BPC-157 anchors the protocol. For gut-specific goals it is often prescribed orally so it acts on the lining directly, though injectable is used where systemic healing is also a goal. Glutathione is added for oxidative load, NAD+ where fatigue is prominent.
Protocols run in cycles rather than indefinitely, typically eight to twelve weeks with reassessment. Alongside them we work on the unglamorous parts: removing NSAIDs and alcohol where possible, adequate fiber, slowing meals down, and a structured reintroduction of foods rather than an ever-shrinking diet.
Timelines: bloating and stool regularity often shift in three to six weeks. Food tolerance is slower — expect two to three months before testing reintroductions seriously.
Injectable (subcutaneous)
Oral capsule or subcutaneous injection depending on the goal. Glutathione and NAD+ are injectable. All protocols include supplies, guidance and clinician oversight.
At Origin Wellness, dosing is never self-directed. Your protocol is written by a licensed physician after reviewing your assessment, and it is adjusted at follow-up based on your response. Read more about how that review works on our approach page.
Safety, side effects, and who should avoid it
The real risk with gut symptoms is not the peptide — it is treating a serious diagnosis as a wellness problem. Inflammatory bowel disease, celiac disease and colorectal cancer all present with symptoms people self-label as leaky gut. Our intake is built to catch that.
- • Blood in the stool, unexplained weight loss, persistent vomiting, anemia or symptoms waking you at night require medical evaluation first — not a peptide.
- • Celiac disease must be tested for before a gluten-free trial, because removing gluten makes the test unreliable.
- • BPC-157 is not FDA-approved and its availability varies by state; your clinician will tell you what applies to you.
- • Because BPC-157 promotes tissue growth and blood vessel formation, an active or recent cancer history requires review before prescribing.
- • Not for use during pregnancy or breastfeeding.
- • Peptides do not treat an infection or an obstruction; if the workup finds one, that gets treated first.
- • No peptide replaces the dietary and stress work — gut symptoms are stubbornly responsive to both.
How gut protocol fits into a full protocol
This fits people with a clean workup and persistent functional symptoms — bloating, irregularity, a narrowing list of tolerated foods — especially after NSAID use, heavy antibiotic courses, a gut infection, or years of high alcohol intake. It also fits endurance athletes with exercise-induced gut symptoms.
It is not a fit for someone who has not been evaluated, or who wants a peptide instead of addressing alcohol, NSAIDs or a diet that has shrunk to six foods. Your consult will be direct about that.
See every protocol we offer
GLP-1s, BPC-157, GHK-Cu, MOTS-c, Sermorelin, NAD+ and more.
Our approach and program tiers
How medical oversight, pharmacy fulfillment, and coaching fit together.
Origin Balance — for women
Fitness and nutrition coaching designed for women on peptide therapy.
Origin Peak — for men
Performance and longevity optimization alongside your protocol.
Services and diagnostics
Labs, DEXA body scans, and the monitoring behind each protocol.
Talk to our team
Questions about whether gut protocol is right for you? Reach out.
Start a gut health protocol
Every protocol is prescribed after review by a licensed clinician and includes medication, supplies and ongoing oversight.
Frequently asked questions
Is leaky gut a real diagnosis?
Increased intestinal permeability is real and measurable, and it is documented in celiac disease, IBD, NSAID use and heavy alcohol intake. 'Leaky gut syndrome' as a catch-all explanation for fatigue, mood and skin problems is not an established diagnosis. We work with the measurable version and stay honest about the rest.
Why is BPC-157 the peptide for gut health?
Because that is where it came from. BPC-157 is derived from a protein in human gastric juice, and its earliest and strongest preclinical research is intestinal healing — ulcers, surgical anastomoses, NSAID damage. It is worth stressing that this body of work is animal research, not human trials.
Oral or injectable BPC-157?
For gut-lining goals, oral often makes more sense — it delivers the peptide where you want it to act. Injectable is preferred when the goal is systemic tissue healing, like a tendon or a post-surgical site. Some protocols use both in sequence.
How long until I notice something?
Bloating and bowel regularity commonly improve within three to six weeks. Food tolerance takes longer — give it two to three months before you start reintroducing the foods you have cut.
Will I be able to eat everything again?
Sometimes, and sometimes not. True food intolerances like lactose deficiency are structural and will not change. Reactivity that developed alongside a damaged barrier often does improve. Reintroduce one food at a time so you learn which is which.
Do I still need probiotics or diet changes?
Yes. Fiber, adequate protein, slower meals, less alcohol and less reliance on NSAIDs do the structural work that the protocol supports. Peptides accelerate healing in a good environment; they do not create one.
Can this help IBS?
It can help some people with IBS symptoms, particularly where inflammation or prior gut injury is part of the picture. IBS driven mainly by the gut-brain axis responds better to gut-directed behavioral therapy, fiber and sometimes medication — and we will say so rather than sell you a protocol.
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This page is educational and is not medical advice. Gut Health & Leaky Gut is available only by prescription following a medical review, and it is compounded by our licensed 503(A) pharmacy partner. Individual results vary.