Prevacid Fastab (Lansoprazole) belongs to the family of medications called proton pump inhibitors (PPIs). These medications slow or prevent the production of acid within the stomach.

Prevacid Fastab (Lansoprazole) is used to treat gastric (stomach) ulcers, duodenal (intestinal) ulcers, reflux esophagitis, and GERD (Gastroesophageal reflux disease) (GERD). It is also used in combination with antibiotics to treat and eradicate H. pylori bacteria (a major cause of duodenal ulcers).

Prevacid Fastab (Lansoprazole) is used to treat gastric ulcers caused by a family of pain relievers known as nonsteroidal anti-inflammatory drugs (NSAIDs), and to reduce the risk of gastric ulcers for people who are taking NSAIDs. It is also used to treat conditions associated with the over-production of stomach acid, including Zollinger-Ellison syndrome.

Prevacid Fastab (Lansoprazole) may be available under multiple brand names and/or in several different forms. Any specific brand name of Prevacid Fastab (Lansoprazole) may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of Prevacid Fastab (Lansoprazole) may not be used for all of the conditions discussed here.

Your doctor may have suggested Prevacid Fastab (Lansoprazole) for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking Prevacid Fastab (Lansoprazole), speak to your doctor. Do not stop taking Prevacid Fastab (Lansoprazole) without consulting your doctor.

Do not give Prevacid Fastab (Lansoprazole) to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take Prevacid Fastab (Lansoprazole) if their doctor has not prescribed it.

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To treat duodenal (intestinal) ulcers, the recommended adult dose of Prevacid Fastab (Lansoprazole) is 15 mg daily, before breakfast, for 2 to 4 weeks. For duodenal ulcers that return, Prevacid Fastab (Lansoprazole) may be used for up to one year.

To treat gastric (stomach) ulcers, the recommended adult dose of Prevacid Fastab (Lansoprazole) is 15 mg daily, before breakfast, for 4 to 8 weeks. The usual recommended dose to treat gastric ulcers caused by NSAIDs is 15 mg to 30 mg daily, before breakfast, for up to 8 weeks. When used to reduce the risk of gastric ulcers for people who are taking NSAIDs, the usual dose is 15 mg daily, before breakfast, for up to 12 weeks.

To treat duodenal ulcers caused by H. pylori bacteria (as confirmed by a test), the recommended dose of Prevacid Fastab (Lansoprazole) is 30 mg along with clarithromycin 500 mg and amoxicillin 1,000 mg, all taken twice daily for 7, 10, or 14 days. All of these medications should be taken before meals. This combination of medications helps kill the bacteria that can cause duodenal ulcers.

To treat GERD and associated heartburn symptoms, the recommended dose of Prevacid Fastab (Lansoprazole) is 15 mg daily before breakfast for up to 8 weeks. Doses up to 30 mg daily are sometimes prescribed for reflux esophagitis or other conditions associated with increased secretion of acid by the stomach.

To treat GERD in children 1 to 11 years of age, the recommended dose is 15 mg to 30 mg (depending on the child's weight) once daily for up to 12 weeks. An increase in dose may be beneficial for some children. For adolescents 12 to 17 years old who have GERD, the adult dose can be used.

When treating Zollinger-Ellison syndrome or other conditions which overproduce stomach acid, the dose of Prevacid Fastab (Lansoprazole) varies, but is often higher than the doses used to treat ulcers. Doses larger than 60 mg daily are often needed.

Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.

Prevacid Fastab (Lansoprazole) should be taken before breakfast or, if taken twice daily, before breakfast and another meal. The medication should not be crushed or chewed. The capsules should be swallowed whole with a glass of water. People who have difficulty swallowing capsules may open the capsule and sprinkle its contents on a tablespoon of applesauce, which should then be immediately swallowed.

Prevacid Fastab (Lansoprazole) fast dissolving tablets should not be chewed or cut. They should not be swallowed whole; they should be placed on the tongue for about one minute to allow the tablet to dissolve. Once the tablet has dissolved, the particles can be swallowed. Alternatively, for adults and children who have trouble swallowing, the tablet may be dissolved in an oral syringe with water. Speak to your pharmacist for specific directions.

It is important to take Prevacid Fastab (Lansoprazole) exactly as prescribed by your doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.

Store Prevacid Fastab (Lansoprazole) at room temperature, protect it from light and moisture, and keep it out of the reach of children.

Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes Prevacid Fastab (Lansoprazole). If you are concerned about side effects, discuss the risks and benefits of Prevacid Fastab (Lansoprazole) with your doctor.

The following side effects have been reported by at least 1% of people taking Prevacid Fastab (Lansoprazole). Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

• Constipation
• Diarrhea
• dizziness
• Dry Mouth
• flu-like symptoms
• gas
• headache
• nausea
• trouble sleeping
• vomiting
• weakness

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

• abdominal pain
• joint or muscle pain
• pain or burning while urinating
• signs of liver damage, e.g.:
• abdominal pain
• brown urine
• light-coloured stools
• loss of appetite
• tiredness
• weakness
• yellowing of skin or whites of eyes
• sinus pain
• skin rash
• sore throat
• vision or hearing changes

Stop taking the medication and seek immediate medical attention if any of the following occur:

• severe diarrhea with blood or mucous in the stool
• signs of a serious allergic reaction (swelling of face or throat, Hives, or difficulty breathing)
• signs of a severe skin reaction, e.g.:
• high Fever
• painful blisters on the skin, mouth, or eyes
• rash
• skin peeling off
• sores

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Prevacid Fastab (Lansoprazole).

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Prevacid

15 mg
Each opaque, hard gelatin, delayed-release capsule of enteric-coated granules, with a pink cap printed with "PREVACID 15" and a bluish-green body printed with "TAP" logo contains 15 mg of Prevacid Fastab (Lansoprazole). Nonmedicinal ingredients: cellulosic polymers, colloidal silicon dioxide, D&C Red No. 28, FD&C Blue No. 1, FD&C Green No. 3, FD&C Red No. 40, gelatin, magnesium carbonate, methacrylic acid copolymer, polyethylene glycol, polysorbate 80, starch, sucrose, sugar spheres, talc, and titanium dioxide.

30 mg
Each opaque, hard gelatin, delayed-release capsule of enteric-coated granules, with a pink cap printed with "PREVACID 30" and a black body printed with "TAP" logo contains 30 mg of Prevacid Fastab (Lansoprazole). Nonmedicinal ingredients: cellulosic polymers, colloidal silicon dioxide, D&C Red No. 28, FD&C Blue No. 1, FD&C Red No. 40, gelatin, magnesium carbonate, methacrylic acid copolymer, polyethylene glycol, polysorbate 80, starch, sucrose, sugar spheres, talc, and titanium dioxide.

Prevacid FasTab

15 mg
Each white-to-yellowish-white with orange-to-dark-brown speckles, round, flat-faced, bevelled-edged, uncoated, orally disintegrating tablet of enteric-coated microgranules, with "15" debossed on one side and measuring approximately 9 mm (side to side), with a strawberry flavour, contains 15 mg of Prevacid Fastab (Lansoprazole). Nonmedicinal ingredients: aspartame (contains 2.5 mg of phenylalanine per 15 mg tablet), citric acid, crospovidone, ferric oxide, glyceryl monostearate, hydroxypropyl cellulose, hydroxypropyl methylcellulose, lactose monohydrate, magnesium carbonate, magnesium stearate, mannitol, methacrylic acid, microcrystalline cellulose, polyacrylate, polyethylene glycol, polysorbate 80, strawberry flavor, talc, titanium dioxide, and triethyl citrate. May also contain soya lecithin.

30 mg
Each white-to-yellowish-white, with orange-to-dark brown speckles, round, flat-faced, bevelled-edged, uncoated, orally disintegrating tablet of enteric-coated microgranules, with "30" debossed on one side and measuring approximately 12 mm (side to side) with a strawberry flavour, contains Prevacid Fastab (Lansoprazole) 30 mg. Nonmedicinal ingredients: aspartame (contains phenylalanine 5.1 mg per 30 mg tablet), citric acid, crospovidone, ferric oxide, glyceryl monostearate, hydroxypropyl cellulose, hydroxypropyl methylcellulose, lactose monohydrate, magnesium carbonate, magnesium stearate, mannitol, methacrylic acid, microcrystalline cellulose, polyacrylate, polyethylene glycol, polysorbate 80, strawberry flavor, talc, titanium dioxide, and triethyl citrate. May also contain soya lecithin.

Do not take Prevacid Fastab (Lansoprazole) if you:

• are allergic to Prevacid Fastab (Lansoprazole) or any ingredients of the medication
• are taking the medication rilpivirine

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There may be an interaction between Prevacid Fastab (Lansoprazole) and any of the following:

• amphetamines (e.g., Dextroamphetamine, Lisdexamfetamine)
• Apalutamide
• "azole" antifungals (e.g., itraconazole, ketoconazole, posaconazole)
• bisphosphonates (e.g., Alendronate, Risedronate)
• Bosentan
• Bosutinib
• Capecitabine
• Carbamazepine
• cefuroxime
• Clopidogrel
• dabigatran
• Dabrafenib
• Dasatinib
• Deferasirox
• Digoxin
• dofetilide
• doxycycline
• Eslicarbazepine
• Enzalutamide
• Erlotinib
• HIV non-nucleoside reverse transcriptase inhibitors (NNRTIs; e.g., delavirdine, efavirenz, etravirine, nevirapine)
• HIV protease inhibitors (e.g., atazanavir, indinavir, ritonavir, saquinavir)
• imatinib
• iron salts
• ledipasvir
• Lomitapide
• Mesalamine
• methotrexate
• Methylphenidate
• Mitotane
• Modafinil
• multivitamins with minerals
• mycophenolate
• Nilotinib
• Pazopanib
• Phenobarbital
• Phenytoin
• primidone
• rifampin
• rifabutin
• rilpivirine
• Riociguat
• St. John's wort
• siltuximab
• Sucralfate
• "statin" anti-cholesterol medications (e.g., Atorvastatin, Lovastatin, Simvastatin)
• Tacrolimus
• Theophylline
• Tocilizumab
• velpatasvir
• Warfarin

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

• stop taking one of the medications,
• change one of the medications to another,
• change how you are taking one or both of the medications, or
• leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with Prevacid Fastab (Lansoprazole). Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.

Before you begin taking a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take Prevacid Fastab (Lansoprazole).

Diarrhea: When gastric acid is decreased, the number of bacteria normally in the digestive system increases. Occasionally, this can cause serious infection in the digestive tract. If you experience severe watery or bloody diarrhea, fever, or abdominal pain while taking Prevacid Fastab (Lansoprazole), contact your doctor as soon as possible.

Electrolyte balance: Long term use of Prevacid Fastab (Lansoprazole) may cause the levels of electrolytes such as magnesium, calcium, and potassium in the blood to decrease. If you experience symptoms of fluid and electrolyte imbalance such as muscle pains or cramps; dry mouth; numb hands, feet, or lips; or racing heartbeat, contact your doctor as soon as possible. Your doctor may do blood tests periodically to monitor the levels of these electrolytes in your blood while you are taking Prevacid Fastab (Lansoprazole).

Liver function: Decreased liver function may cause Prevacid Fastab (Lansoprazole) to build up in the body. If you have reduced liver function or liver disease, discuss with your doctor how Prevacid Fastab (Lansoprazole) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Prevacid Fastab (Lansoprazole), and whether any special monitoring is needed.

If you experience symptoms of liver problems such as fatigue, feeling unwell, loss of appetite, nausea, yellowing of the skin or whites of the eyes, dark urine, pale stools, abdominal pain or swelling, and itchy skin, contact your doctor immediately.

Methotrexate interaction: Prevacid Fastab (Lansoprazole), like other medications in this group, may interact with methotrexate when the two medications are used at the same time. This combination may lead to higher than expected amounts of methotrexate in the body and can cause serious side effects, including kidney damage, irregular heartbeat, Anemia, or infection. If you take Prevacid Fastab (Lansoprazole) and are also going to receive a dose of methotrexate, discuss with your doctor how Prevacid Fastab (Lansoprazole) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Prevacid Fastab (Lansoprazole), and whether any special monitoring is needed.

More serious conditions of the stomach and intestines: Even if you experience improvement in acid-related symptoms, it is still possible to have serious underlying stomach problems such as stomach cancer. If you experience symptoms of a more serious condition of the stomach and intestines (e.g., trouble swallowing, unplanned weight loss, vomiting of blood or food, or black stools) while taking Prevacid Fastab (Lansoprazole), contact your doctor immediately.

Osteoporosis fractures: Long-term use of Prevacid Fastab (Lansoprazole) may be related to an increased risk of bone fractures in the hip, wrist, or spine, as a result of weakened bones. This risk is further increased if you are at risk of developing osteoporosis. If you have osteoporosis or have risk factors for developing osteoporosis, discuss with your doctor how Prevacid Fastab (Lansoprazole) may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Prevacid Fastab (Lansoprazole), and whether any special monitoring is needed.

Vitamin B12: Long-term use of Prevacid Fastab (Lansoprazole) may lead to vitamin B12 deficiency. If you are a vegetarian or have low vitamin B12 levels, discuss with your doctor if any special monitoring is required.

Pregnancy: There are no adequate or well-controlled studies on the use of Prevacid Fastab (Lansoprazole) by pregnant women. Prevacid Fastab (Lansoprazole) should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Prevacid Fastab (Lansoprazole), contact your doctor immediately.

Breast-feeding: It is not known if Prevacid Fastab (Lansoprazole) passes into breast milk. If you are a breast-feeding mother and are taking Prevacid Fastab (Lansoprazole), it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of Prevacid Fastab (Lansoprazole) have not been established for use by children under one year old. For children 1 to 17 years old, Prevacid Fastab (Lansoprazole) can be used to treat GERD for a maximum of 12 weeks.

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