Doctors in Boston faced a puzzling case: severe nausea, vomiting and abdominal pain that didn’t quite match the woman’s long medical history. Less than a day later, she walked out feeling dramatically better after an unusual treatment involving 1.5 litres of Coca-Cola.
A frightening night in the emergency department
The patient, a 63-year-old woman, arrived at Brigham and Women’s Hospital in Boston with intense nausea, repeated vomiting and persistent upper abdominal pain. She described a burning sensation starting high in her abdomen, running along her right side and into her back.
These symptoms had not appeared overnight. For months she had dealt with non-bloody vomiting and chronic discomfort, but in recent hours everything had escalated. She could no longer keep food down and feared something was seriously wrong.
Her medical record was extensive. She lived with type 2 diabetes, stage 2 chronic kidney disease and gastroesophageal reflux disease. Still, the current symptoms felt different, and standard explanations did not fully fit.
Doctors suspected that something inside her stomach was physically blocking normal digestion.
Blood tests, imaging studies and an abdominal CT scan were ordered urgently. The team was looking for ulcers, tumours, gallbladder issues or signs of an intestinal obstruction. What they found pointed in a far more unusual direction.
A strange mass hiding in the stomach
Scan results showed dilated bile ducts and, more strikingly, a swollen stomach that appeared packed with a semi-solid mass. An endoscopic examination gave the answer: a large gastric bezoar.
A bezoar is a lump of undigested material that clumps together in the stomach or intestine. In this case, doctors believed it was a “phytobezoar” — mainly made up of fibres from fruits and vegetables that the body failed to break down.
Gastric bezoars are rare. Studies suggest they appear in fewer than 0.5% of patients undergoing upper digestive endoscopy. When they do form, they can cause persistent nausea, pain, early satiety, and even dangerous obstruction if left untreated.
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Traditionally, treatment relies on one of two approaches: endoscopic fragmentation or surgery. In the first, doctors use instruments threaded through a flexible tube to break the mass into pieces small enough to pass through the digestive tract. In the second, surgeons remove it directly through an operation.
For this patient, the team opted for a third route, one that seems more at home at a cinema than in an operating theatre: Coca-Cola.
Why Coca-Cola ended up on the prescription pad
The idea of using carbonated drinks for stomach issues has circulated for years, often as folk advice. For mild bloating, people sometimes feel temporary relief after sipping a fizzy drink. That effect is mostly linked to gas release and movement in the stomach, not real healing.
What happened in Boston was very different. This was not home remedy territory, but a medically documented method backed by gastroenterology research.
The chemistry behind a soft drink cure
Coca-Cola contains carbonic acid (from carbonation) and phosphoric acid, creating an acidic environment. Studies published in specialist journals, including the World Journal of Gastrointestinal Endoscopy, suggest these acids can help dissolve the fibrous material inside phytobezoars.
The drink also has a low pH closer to that of gastric acid. Combined, these factors can soften the mass, break down plant fibres and make endoscopic removal easier, or in some cases unnecessary.
- Acidic components weaken the structure of the bezoar.
- Carbonation helps mechanically agitate and break the mass.
- Sugar and other ingredients may increase fluid retention in the stomach, surrounding the bezoar.
For the Boston patient, the team initially prescribed 3,000 millilitres of Coca-Cola — roughly 8.5 cans — to be consumed over 12 hours. The goal was to bathe the bezoar in the drink long enough to dissolve it.
There was a catch: she hated fizzy drinks and felt that quantity was far too much. After discussion, doctors agreed to halve the dose to 1,500 millilitres, still a substantial 4–5 cans’ worth, sipped across the same time window.
From agony to relief in less than 24 hours
The change came quickly. Within a day, her nausea eased. The abdominal burning faded and she felt noticeably lighter and less bloated. Nurses monitored her carefully, checking for pain, vomiting and any potential side effects such as spikes in blood sugar.
Follow-up endoscopy showed the bezoar had completely vanished — no surgery, no fragmentation tools, just Coca-Cola.
This outcome attracted attention not only because of the result, but also because of what may have caused the bezoar in the first place.
A possible link with a popular weight-loss drug
Doctors suspected that her medication regimen may have set the stage for the problem. In their report, published in the New England Journal of Medicine in September 2025, they highlighted the role of semaglutide, a GLP‑1-based drug.
Semaglutide belongs to a family of medications used for type 2 diabetes and, increasingly, off-label or under weight-loss branding for obesity. These drugs slow gastric emptying, meaning food stays in the stomach for longer.
That slower movement can help manage blood sugar and reduce appetite, but it also creates conditions where fibrous food may linger and clump together. Over time, this can contribute to bezoar formation in susceptible people.
In this patient, the combination of semaglutide, existing digestive issues and a presumably high-fibre diet likely built the perfect conditions for a large gastric mass.
Does this mean Coca-Cola is a new miracle cure?
Doctors involved in the case stress that Coca-Cola is not a magic solution for every stomach complaint. Using it in hospital for bezoars is a targeted intervention, not a general recommendation for home use.
Downing litres of cola at home for stomach pain could worsen symptoms, push up blood sugar and mask serious disease.
Soft drinks are high in sugar and, when used without supervision, can be risky for people with diabetes, kidney disease or heart problems. Too much carbonation can also trigger reflux or worsen bloating.
In hospital, by contrast, the dose is calculated, timing is controlled and patients are closely monitored. If the drink fails to dissolve the bezoar, endoscopy or surgery remain available.
| Treatment option | How it works | Typical use |
|---|---|---|
| Coca-Cola (or similar solution) | Chemically softens and dissolves bezoar | First-line in stable patients with phytobezoars |
| Endoscopic fragmentation | Breaks bezoar into smaller pieces with tools | Used when chemical dissolution is incomplete |
| Surgery | Physically removes bezoar through an operation | Reserved for complications or failure of other methods |
What readers should know about GLP‑1 drugs and digestion
Drugs based on GLP‑1 (glucagon-like peptide‑1) are now widely known under various brand names for diabetes and weight loss. They slow the transit of food from the stomach to the intestine and can cause side effects like nausea, vomiting and constipation.
For most patients, these symptoms stay mild. Yet persistent or severe digestive problems should never be brushed aside, especially when accompanied by weight loss, continuous vomiting or intense abdominal pain.
Doctors may adjust the dose, switch medications or order imaging and endoscopy to rule out rare complications such as bezoars or intestinal obstruction.
Practical scenarios and warning signs
Anyone taking GLP‑1 drugs, especially older adults or those with previous stomach issues, can lower their risk by eating slowly, chewing food thoroughly and avoiding suddenly massive increases in very fibrous foods if they already struggle with digestion.
Urgent medical attention is warranted if symptoms escalate. Warning signs include:
- Vomiting that continues for more than a day or two
- Inability to keep liquids down
- Severe upper abdominal pain or burning
- Black or bloody vomit or stools
- Fever with abdominal symptoms
In such situations, reaching for a fizzy drink at home instead of going to hospital can delay diagnosis and care.
Beyond the headline: what this case really shows
This Boston case highlights how ordinary products sometimes find unexpected medical uses. Doctors did not choose Coca-Cola because it is fashionable or comforting, but because its chemical profile matched the specific problem in this patient’s stomach.
At the same time, it underlines a broader question hanging over the boom in GLP‑1 medications: how to balance their clear benefits for diabetes and obesity against less frequent, but still significant, gastrointestinal risks. As more people start these treatments, unusual cases like this will likely appear more often in medical journals — though not always with such a fizzy, headline-grabbing twist.
Originally posted 2026-02-18 09:37:02.