• Active Ingredient: Lansoprazole
  • 30 mg, 15 mg
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What is Fudermex?

The active ingredient of Fudermex brand is lansoprazole. Lansoprazole is a proton pump inhibitor. Lansoprazole decreases the amount of acid produced in the stomach.

Used for

Fudermex is used to treat diseases such as: Aspiration Pneumonia, Barrett's Esophagus, Duodenal Ulcer, Duodenal Ulcer Prophylaxis, Erosive Esophagitis, Gastritis/Duodenitis, GERD, Helicobacter Pylori Infection, Multiple Endocrine Adenomas, NSAID-Induced Gastric Ulcer, NSAID-Induced Ulcer Prophylaxis, Stomach Ulcer, Systemic Mastocytosis, Zollinger-Ellison Syndrome.

Side Effect

Possible side effects of Fudermex include: increased cough; bleeding gums; flushing or redness of the skin, especially on the face and neck; mild nausea; Diarrhea; drowsiness; constipation.

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How long will I take it for?

Depending on your illness, you may only need to take it for a few weeks or months. Sometimes you might need to take it for longer, even many years. Some people don't need to take Fudermex every day and take it only when they have symptoms. Once you feel better (often after a few days or weeks), you can stop taking it. Taking Fudermex in this way is not suitable for everyone. Discuss with your doctor what is best for you.

Q: Does Fudermex cause weight gain?

A: Prevacid (Fudermex) is a proton pump inhibitor frequently used for the treatment of gastroesophageal reflux disorder (GERD) and stomach/duodenal ulcers. Most common side effects with Prevacid include diarrhea, abdominal pain, nausea and constipation. Additional side effects with Prevacid occurring in less than 1% of patients include weight gain, weight loss, anorexia, and increased appetite. These are not all the possible side effects of Prevacid. For a complete list, ask your doctor or pharmacist.

How it works

Fudermex belongs to a class of drugs called proton pump inhibitors. A class of drugs is a group of medications that work in a similar way. These drugs are often used to treat similar conditions.

Fudermex works by decreasing the amount of acid produced in your stomach. It does this by blocking the proton pump in the cells of your stomach. The proton pump works in the final step of acid production. When the proton pump is blocked, your stomach makes less acid. This helps to decrease your symptoms.

Fudermex oral capsule doesn’t cause drowsiness, but it can cause other side effects.

Liquid Fudermex

Liquid Fudermex can be prescribed and made to order for children and people who cannot swallow capsules or tablets. It will come with a syringe or spoon to help you take the right amount. If you don't have a syringe or spoon, ask your pharmacist for one. Do not use a kitchen teaspoon as it will not give the right amount.

Michael Stewart, Reviewed by Sid Dajani | Last edited 15 Jun 2017 | Certified by The Information Standard

Fudermex reduces the amount of acid produced in your stomach.

Take your doses 30 minutes before breakfast when your stomach is empty. If you are asked to take two doses daily, take your first dose 30 minutes before breakfast and your second dose in the evening.

The most common side-effects are stomach upset and headache. These effects are generally mild and do not last long.

Q: Are there any other medications you can take along with Prevacid for reflux when the Prevacid is not working as well?

A: Prevacid (Fudermex) decreases the amount of acid the stomach produces. It belongs to the class of drugs known as proton-pump inhibitors (or PPIs). The two other major classes of drugs used for reflux are histamine blockers (also called H2 blockers) and antacids. These drugs all work to reduce stomach acid, with the PPIs having the greatest effect. There are several possible reasons for the lack of effect from Prevacid. Have any new medications been added to your daily routine? Some medications can cause problems that make the symptoms of reflux worse by weakening the esophageal sphincter, increasing inflammation, or slowing digestion. It is also possible that you have an infection in your gastrointestinal tract. The bacteria, H. pyLori Mendoza, PharmD, is often associated with reflux. As recommended by the American College of Gastroenterology, the treatment to get rid of H. pyLori Mendoza, PharmD infection includes a PPI and two antibiotics. Please consult with your health care provider who understands your full medical condition for more information about these possibilities and appropriate treatment for you. Other ways to help reduce reflux and its symptoms include eating smaller meals more frequently, not eating for two hours before bedtime, and avoiding fatty foods, alcohol, caffeine, and peppermint. For more information on reflux, please visit //www.everydayhealth.com/gerd/guide/. Michelle McDermott, PharmD

How to use Fudermex

Read the Medication Guide and the Patient Information Leaflet if available from your pharmacist before you start taking Fudermex and each time you get a refill.

Take this medication by mouth as directed by your doctor, usually once daily, before a meal. If you are self-treating, follow all directions on the product package. Dosage and length of treatment are based on your medical condition and response to treatment. Children's dosage is also based on age and weight. Do not increase your dose or take this drug more often than directed. If you have any questions, ask your doctor or pharmacist.

Do not crush or chew the capsules. Swallow the medication whole. If you have trouble swallowing the capsule, you may open the capsule and sprinkle its contents on a spoonful of soft food (such as applesauce, cottage cheese, yogurt) and swallow the mixture right away without chewing it. Or you may empty the capsule's contents into a small amount (2 ounces or 60 milliliters) of juice, stir, and drink the mixture right away without chewing it. Then rinse the glass with more juice and drink to make sure you have taken the entire dose. Do not prepare the mixture ahead of time for later use. Doing so may destroy the drug.

If you are giving this medication through a tube into the stomach (nasogastric tube), ask your health care professional for detailed instructions on how to properly mix and give it.

If needed, antacids may be taken along with this medication. If you are also taking sucralfate, take Fudermex at least 30 minutes before sucralfate.

Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day. Continue to take this medication for the prescribed length of treatment even if you are feeling better. If you are self-treating with the over-the-counter product, do not take it for more than 14 days unless directed by your doctor.

Tell your doctor if your condition persists or worsens. If you are self-treating, tell your doctor if your heartburn persists after 14 days or if you need to use this medication more than once every 4 months. The risk of side effects goes up over time. Ask your doctor how long you should take this medication. If you think you may have a serious medical problem, get medical help right away.

For Healthcare Professionals

Applies to Fudermex: compounding powder, intravenous powder for injection, oral delayed release capsule, oral granule for reconstitution, oral suspension, oral tablet disintegrating

2. Key facts

  • It's usual to take Fudermex once a day in the morning.
  • For severe illness, you can take it twice a day - in the morning and in the evening.
  • Common side effects include headache, diarrhoea and stomach pain. These tend to be mild and go away when you stop taking the medicine.
  • Fudermex is called by the brand name Zoton FasTabs.

How should I take Fudermex?

Use Fudermex exactly as directed on the label, or as prescribed by your doctor and read all medication guides or instruction sheets.

Fudermex is usually taken before eating. Prevacid OTC should be taken in the morning before you eat breakfast.

Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.

Shake the Fudermex oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Swallow the Fudermex capsule whole and do not crush, chew, break, or open it.

Remove an orally disintegrating tablet from the package only when you are ready to take the medicine. Place the tablet in your mouth and allow it to dissolve, without chewing. Swallow several times as the tablet dissolves.

Use Fudermex for the full prescribed length of time, even if your symptoms quickly improve.

Prevacid OTC should be taken only once daily for 14 days. It may take up to 4 days for full effect. Allow at least 4 months to pass before you start another 14-day treatment with Prevacid OTC.

Call your doctor if your symptoms do not improve or if they get worse while you are taking Fudermex. If you take Prevacid OTC, call your doctor if your heartburn gets worse over the 14-day treatment, or if you need treatment more than once every 4 months.

Some conditions are treated with a combination of Fudermex and antibiotics. Use all medications as directed.

If you use Fudermex for longer than 3 years, you could develop a vitamin B-12 deficiency. Talk to your doctor about how to manage this condition if you develop it.

Store at room temperature away from moisture, heat, and light. Do not freeze the liquid medicine.


  • Hypersensitivity to Fudermex or other proton pump inhibitors

Effects of Drug Abuse

  • See "What Are Side Effects Associated with Using Fudermex?"

  • Published observational studies suggest that proton pump inhibitor (PPI) therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist, or spine, particularly with prolonged (greater than 1 year), high-dose therapy
  • Hypomagnesemia may occur with prolonged use (i.e., greater than 1 year); adverse effects may result and include tetany, arrhythmias, and seizures; in 25% of cases reviewed, magnesium supplementation alone did not improve low serum magnesium levels and the PPI had to be discontinued
  • Daily long-term use (e.g., longer than 3 years) may lead to malabsorption or a deficiency of cyanocobalamin
  • See "What Are Side Effects Associated with Using Fudermex?"

  • Proton pump inhibitors (PPIs) are possibly associated with increased incidence of Clostridium difficile-associated diarrhea (CDAD); consider diagnosis of CDAD for patients taking PPIs who have diarrhea that does not improve
  • Liver disease may require dosage reduction
  • Cutaneouslupus erythematosus (CLE) and systemic lupus erythematosus (SLE) reported with PPIs; avoid using for longer than medically indicated; discontinue if signs or symptoms consistent with CLE or SLE are observed and refer patient to specialist
  • Published observational studies suggest that proton pump inhibitor (PPI) therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist, or spine, particularly with prolonged (greater than 1 year), high-dose therapy
  • Decreased gastric acidity increases serum chromogranin A (CgA) levels and may cause false-positive diagnostic results for neuroendocrine tumors; temporarily discontinue PPIs before assessing CgA levels
  • Hypomagnesemia may occur with prolonged use (i.e., greater than 1 year); adverse effects may result and include tetany, arrhythmias, and seizures; in 25% of cases reviewed, magnesium supplementation alone did not improve low serum magnesium levels and the PPI had to be discontinued
  • Proton pump inhibitors (PPIs) may decrease the efficacy of clopidogrel by reducing the formation of the active metabolite
  • Relief of symptoms does not eliminate the possibility of a gastric malignancy
  • Therapy increases risk of Salmonella, Campylobacter, and other infections
  • Acuteinterstitialnephritis reported in patients taking proton pump inhibitors
  • Daily long-term use (e.g., longer than 3 years) may lead to malabsorption or a deficiency of cyanocobalamin
  • May elevate and/or prolong serum concentrations of methotrexate and/or its metabolite when administered concomitantly with PPIs, possibly leading to toxicity; consider a temporary withdrawal of PPI therapy with high dose methotrexate administration

  • Fudermex may be acceptable for use during pregnancy
  • Either animal studies show no risk but human studies are not available or animal studies showed minor risks and human studies were done and showed no risk
  • It is not known whether Fudermex is distributed into breast milk; do not nurse


Capsules (delayed-release): 15 mg, 30 mg

Granules for oral suspension (delayed-release, enteric-coated): 15 mg, 30 mg

Prevpac (combination product for Helicobacter pylori infection): daily pack containing two 30-mg Fudermex capsules, four 500-mg amoxicillin capsules, and two 500-mg clarithromycin tablets

Prevacid NapraPAC 375 (combination product for reducing risk of ulcers from nonsteroidal anti-inflammatory drugs ): weekly pack containing seven 15-mg Prevacid capsules and fourteen 375-mg Naprosyn tablets

Prevacid NapraPAC 500 (combination product for reducing risk of ulcers from NSAIDs): weekly pack containing seven 15-mg Prevacid capsules and fourteen 500-mg Naprosyn tablets

Prevacid SoluTab (delayed-release, orally disintegrating tablet): 15 mg, 30 mg

What Other Drugs Interact with Fudermex?

If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.

Severe Interactions of Fudermex include:

Serious Interactions of Fudermex include:

Fudermex has moderate interactions with at least 48 different drugs.

Fudermex has mild interactions with at least 54 different drugs.

This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns or for more information about this medicine.

Fudermex to reduce stomach ac >About Fudermex
  • Before taking Fudermex
  • How to take Fudermex
  • Getting the most from your treatment
  • Can Fudermex cause problems?
  • How to store Fudermex
  • Important information about all medicines
  • Can Fudermex cause problems?

    Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with Fudermex. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.

    Why it’s used

    Fudermex oral capsule is used to reduce the amount of acid in your stomach. It can be used to:

    • treat gastric ulcers (stomach ulcers) or duodenal ulcers
    • treat heartburn due to gastroesophageal reflux disease (GERD)
    • treat erosive esophagitis (a condition with inflammation and ulcers in the esophagus)
    • prevent and treat stomach ulcers due to use of nonsteroidal anti-inflammatory drugs (NSAIDs)
    • treat hypersecretory conditions (where your stomach makes too much acid), such as Zollinger-Ellison syndrome
    • treat a stomach infection caused by Helicobacter pylori (H. pylori) in combination with an antibiotic

    Fudermex side effects

    Get emergency medical help if you have signs of an allergic reaction ro Fudermex: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

    Call your doctor at once if you have:

    severe stomach pain, diarrhea that is watery or bloody;

    new or unusual pain in your wrist, back, hip, or thigh;

    a seizure (convulsions);

    kidney problems - little or no urination, blood in your urine, swelling, rapid weight gain;

    low magnesium - dizziness, fast or irregular heart rate, tremors (shaking) or jerking muscle movements, feeling jittery, muscle cramps, muscle spasms in your hands and feet, cough or choking feeling; or

    new or worsening symptoms of lupus - joint pain, and a skin rash on your cheeks or arms that worsens in sunlight.

    Taking Fudermex long-term may cause you to develop stomach growths called fundic gland polyps. Talk with your doctor about this risk.

    If you use Fudermex for longer than 3 years, you could develop a vitamin B-12 deficiency. Talk to your doctor about how to manage this condition if you develop it.

    Common Fudermex side effects may include:

    nausea, stomach pain;

    This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

    6. How to cope with s >

    What to do about:

    • headaches - make sure you rest and drink plenty of fluids. Do not drink too much alcohol. Ask your pharmacist to recommend a painkiller. Headaches should usually go away after the first week of taking Fudermex. Talk to your doctor if they last longer than a week or are severe.
    • feeling sick - it may help if you don't eat rich or spicy food while you're taking Fudermex.
    • diarrhoea or being sick (vomiting) - drink plenty of water by having small, frequent sips to avoid dehydration. Signs of dehydration include peeing less than usual or having strong-smelling pee. Do not take any other medicines to treat diarrhoea or vomiting without speaking to a pharmacist or doctor.
    • stomach pain - try to rest and relax. It can help to eat and drink slowly and have smaller and more frequent meals. Putting a heat pad or covered hot water bottle on your stomach may also help. If you are in a lot of pain, speak to your pharmacist or doctor.
    • constipation - eat more high-fibre foods such as fresh fruit and vegetables and cereals, and drink plenty of water. Try to exercise more regularly, for example, by going for a daily walk or run. If this doesn't help, talk to your pharmacist or doctor.
    • wind - steer clear of foods that cause wind like lentils, peas, beans and onions. It might also help to eat smaller and more frequent meals, eat and drink slowly, and exercise regularly. Some pharmacy remedies, such as simethicone, may help relieve the symptoms of wind.
    • itchy skin rashes - it may help to take an antihistamine which you can buy from a pharmacy. Check with the pharmacist to see what type is suitable for you.
    • feeling dizzy or tired - if Fudermex makes you feel dizzy or tired, stop what you're doing and sit or lie down until you feel better. Do not drive or use tools or machinery if you're feeling tired. Do not drink alcohol as it will make you feel worse.
    • dry mouth or throat - chew sugar-free gum or sugar-free sweets.

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