Does Taking Prilosec Cause Diarrhea?

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Omeprazole, a medication used to treat stomach and esophagus problems, is often associated with diarrhea, nausea, vomiting, headaches, rash, dizziness, nervousness, abnormal heartbeats, muscle pain, weakness, leg cramps, and water retention. While most people do not experience serious side effects, it is important to drink plenty of fluids to avoid getting sick or experiencing diarrhea.

Omeprazole is usually well-tolerated but can cause headaches and stomach-related side effects, such as nausea, gas, or diarrhea. Long-term use can lead to more serious side effects, such as infections or bone fractures. Diarrhea that is watery or has blood in it may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor before taking omeprazole.

Diarrhea may occur during omeprazole treatment, even if you have been taking it for a long time. Severe or persistent diarrhea can be a sign of an inflamed bowel. People on popular prescription heartburn drugs like Prilosec, Prevacid, and Nexium seem more prone to getting potentially dangerous diarrhea.

Some of the serious side effects of omeprazole include watery diarrhea, severe stomach pain, nausea, vomiting, kidney problems, and severe diarrhea, especially if it is watery or bloody. The most commonly reported side effects include headache, abdominal pain, nausea, and diarrhea. Fever is also a very common side effect, with up to 10 or more cases reported. It is essential to consult a healthcare provider if you experience any of these side effects.

Useful Articles on the Topic
ArticleDescriptionSite
Prilosec OTC Uses, Side Effects & WarningsPrilosec OTC has been associated with the onset of diarrhea, which may be indicative of a new infection. In the event of watery or bloody diarrhea, it is advisable to consult with a medical professional prior to taking any action.www.drugs.com
Omeprazole (oral forms) side effects: How to manage themIt is possible that diarrhea may occur during omeprazole treatment. Diarrhea was one of the more frequently observed adverse effects in clinical trials of omeprazole.www.medicalnewstoday.com
Side effects of omeprazoleThis phenomenon may occur even in the presence of prolonged omeprazole administration. Severe or persistent diarrhea may be indicative of bowel inflammation.www.nhs.uk

📹 Doctor explains how to take OMEPRAZOLE (Losec/Prilosec), including uses, doses, side effects & more!

Dr O’Donovan explains to patients key facts about omeprazole (PPI also known as LOSEC MUPS, LOSEC or PYROCALM) …


Why is Prilosec giving me diarrhea?

PPI administration may cause diarrhea in addition to collagenous colitis, due to various mechanisms such as easier colonization of enteropathogenic bacteria, inadequate protein digestion in the stomach, and a possible influence on H, K-ATPase in the colonic mucosa. In the absence of gastric acid, bacteria like Clostridium difficile, Salmonella, and Campylobacter species can easily colonize in the gut, leading to enterocolitis and diarrhea or loose bowels. Inhibition of gastric acid secretion by PPI administration may cause diarrhea. Nongastric H, K-ATPase in the human colon may regulate colonic fluid secretion.

Clinical studies have reported similar incidences of diarrhea between lansoprazole, omeprazole, and placebo treated groups, with most resolving spontaneously while patients continued PPIs. A recent cohort study comparing PPI and antireflux surgery as a long-term treatment of GERD showed a similar incidence of diarrhea between the two treatment strategies.

This prospective observational study had some limitations, including its open-label design and the small size of the cohort. Future larger studies are needed to clarify the risk of diarrhea associated with administration of different PPIs.

Why can't you take Prilosec for more than 14 days?
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Why can’t you take Prilosec for more than 14 days?

Can I Take Omeprazole For More Than 14 Days?. One course of treatment of omeprazole OTC is to take daily for 14 days. This can be repeated up to 3 times per year (i. e. every 4 months). So what’s the harm in taking omeprazole for longer than 14 days?

Among other things, long-term use of omeprazole can cause “rebound acid hypersecretion”- this means that once the drug is no longer used, the stomach can generate an excess of acid. The excess stomach acid may cause people to take more omeprazole, thus creating a cycle of long term dependency which is not healthy. It is therefore recommended to use the lowest effective dose of omeprazole for the least amount of time possible.

Does Omeprazole Interact with Food or Other Medicines?. When taking omeprazole and other medications, it is important to inform your health care provider that you are taking omeprazole to determine if any interactions may occur.

Can acid reflux meds cause diarrhea?
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Can acid reflux meds cause diarrhea?

If you have gastroesophageal reflux disease, or GERD, you might take a type of drug called a proton pump inhibitor (PPI). You also might take a PPI if you have an ulcer. It doesn’t happen often, but some people who take these drugs get diarrhea. Some have a version caused by a serious bacterial infection called Clostridium difficile (C. diff).

PPIs are available over-the-counter and by prescription. They include:

  • Dexlansoprazole ( Dexilant )
  • Esomeprazole ( Nexium, Vimovo )
  • Lansoprazole ( Prevacid, Prevacid 24HR )
  • Omeprazole ( Prilosec, Prilosec OTC, Zegerid, Zegerid OTC )
  • Pantoprazole ​​​​​​​ ( Protonix )
  • Rabeprazole ( AcipHex )
What does Prilosec do to your gut?
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What does Prilosec do to your gut?

Generic Name: omeprazole magnesium It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as heartburn, difficulty swallowing, and cough. This medication helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus.

Read the Medication Guide provided by your pharmacist before you start taking omeprazole and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth before a meal as directed by your doctor, usually once daily. This medication may also be given through a tube into the stomach (nasogastric or gastric tube). The dosage and length of treatment are based on your medical condition and response to treatment. Children’s dosage is also based on weight.

If you are taking this medication by mouth, empty the contents of a packet into a container with 1 to 3 teaspoons (5 to 15 milliliters) of water. Check the manufacturer package directions for the proper amount of water to use for your dose. Stir the mixture well and leave it for 2 to 3 minutes to thicken. Stir again and drink all of the mixture within 30 minutes. If any medication remains in the container, add more water, stir, and drink right away to make sure you take the entire dose. Do not crush or chew the medication granules. Doing so may destroy the drug.

What is the downside of taking Prilosec?
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What is the downside of taking Prilosec?

Taking omeprazole for more than a year may increase your chances of certain side effects, including:

  • Bone fractures
  • gut infections
  • vitamin B12 deficiency – symptoms include feeling very tired, a sore and red tongue, mouth ulcers and pins and needles

If you take omeprazole for longer than 1 year, your doctor will regularly check your health to see if you should carry on taking it.

It’s not known if omeprazole works less well the longer you take it.

Can I skip a day of Prilosec?

Prilosec OTC missed dose If you miss a day, just continue your treatment on the next day.

What is the biggest side effect of omeprazole?

The most common omeprazole side effect is headache. But it can also cause stomach-related side effects, such as nausea, vomiting, or diarrhea. Taking omeprazole at high dosages, or for longer than a year, raises the risk of more serious side effects. These can include bone breaks and pneumonia (a lung infection).

Can Prilosec cause IBS?
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Can Prilosec cause IBS?

Proton pump inhibitors (PPIs) have been associated with small intestinal bacterial overgrowth (SIBO), which increases with prolonged PPI use, and SIBO has been associated with irritable bowel syndrome (IBS).

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Is diarrhea a side effect of PPI?
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Is diarrhea a side effect of PPI?

What are the side effects of using proton pump inhibitors?. Most people who take PPIs don’t experience issues. As with any medication, there are potential side effects, including:

  • Abdominal pain.
  • Constipation.
  • Diarrhea.
  • Dizziness.
  • Dry mouth.
  • Headaches.
  • Fever.
  • Gas.
  • Light-headedness.
  • Itching and rash.
  • Vomiting.

Although PPIs are generally considered safe, researchers have identified potential risks associated with them, especially when using them long-term. PPIs may increase your risk of:

  • A Clostridioides difficile (C. diff) infection. PPIs may change the balance of bacteria in your gut, increasing your risk of an infection.
  • A fracture. PPIs may make it more difficult for your body to absorb enough calcium, a mineral that keeps your bones strong. The FDA warns that PPIs may increase your risk of breaking your hip, wrist or spine.
  • Kidney disease. They may increase your chances of developing chronic kidney disease (CKD) or cause the disease to progress.
  • A nutritional deficiency. PPIs may prevent your small intestine from absorbing enough magnesium or B12. Magnesium helps your muscles and nerves work effectively. Vitamin B12 helps keep your nervous system and red blood cells healthy.
Why am I having diarrhea and acid reflux at the same time?
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Why am I having diarrhea and acid reflux at the same time?

And people who experience frequent diarrhea may have a condition called irritable bowel syndrome (IBS). IBS causes changes in bowel habits, including diarrhea. Some links between GERD and IBS explain why a person may experience diarrhea and heartburn.

Diarrhea and heartburn are two digestive symptoms. If a person has certain gastrointestinal disorders, they may be more likely to experience both heartburn and diarrhea than other people.

Some links between GERD and IBS explain why a person may experience diarrhea and heartburn.

Read on to learn about the link between diarrhea and heartburn, symptoms, causes, treatment options, and more.

Is Nexium safer than Prilosec?
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Is Nexium safer than Prilosec?

Nexium and Prilosec are both PPIs, which work by blocking the actions of the gastric proton pump, H+/K+ ATPase. Both medications are available over-the-counter without a prescription and can be used to treat symptoms of gastroesophageal reflux disease (GERD), conditions involving excessive stomach acid, such as Zollinger-Ellison syndrome, esophagitis, stomach and duodenal ulcers, and other conditions.

Nexium is typically more expensive than Prilosec, but generic versions have similar prices. While side effects like diarrhea, nausea, vomiting, or headache are uncommon, Nexium may be more likely to cause them. Prilosec should not be taken with the blood thinner clopidogrel, and it has not been evaluated whether Nexium has a similar interaction with clopidogrel.

Both Nexium and Prilosec are available as generics under the names esomeprazole (Nexium) and omeprazole (Prilosec). They may also increase the risk of osteoporosis-related fractures, Clostridium difficile-associated diarrhea, pneumonia, or low vitamin B-12 and magnesium levels. They do not offer immediate relief from heartburn, should not be used for longer than four to eight weeks, and may interact with other medications, such as HIV medications, rifampin, risedronate, St. John’s wort, and methotrexate.


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Does Taking Prilosec Cause Diarrhea?
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Elle Pierson

Hi, I’m Elle Pierson, RN, MBA—a passionate Healthcare Consultant dedicated to empowering individuals and organizations to achieve better health outcomes. As a TEDx Speaker, Author, and Mentor, I bring my expertise in medicine and healthcare management to help others navigate complex systems with confidence. My mission is to inspire change and create meaningful solutions in the world of healthcare. Thank you for joining me on this journey!

Education: Bachelor of Science in Nursing (BSN) and Executive MBA from Texas Woman’s University.
Email: [email protected]

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