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Lansoprazole (Prevacid)is the medication used in prevention of intestinal ulcers and other conditionsdue to the excess of gastric acid. This medication belongs to the group ofmedications known as proton-pump inhibitors (PPI) and they prevent the productionof stomach acid.

The medication may induce the chronic watery diarrhea, nauseaand stomach pain. Rare side effects might include vomiting and constipation, andpancreas problems. Some of the patients have reported a lansoprazole relatedcolitis. This condition improved once the patients stopped the lansoprazoletreatment.

Almost ¼ of all the patients using this medication reportedheadache, pain and dizziness. The manufacturer claims that the headaches aremore likely to occur in patients on the placebo therapy, then on lansoprazoletreatment. A certain number of patients on lansoprazole are suffering fromspeech disorders. Extremely in rare situations this medication can affectthe psyche of the patient and leads to anxiety or depression.

Use of lansoprazole affects the liver. It could inducehepatotoxicity and elevate the levels of liver enzymes (such as GGT, gamma-glutamyltransferase,and ALT, alanine aminotransferase).

All kinds of hematologic problems may occur with the use ofthis medication. Those include leukopenia, neutropenia, thrombocytopenia, aplasticand hemolytic anemia, granulocytosis and thrombocytopenic purpura and decreasedlevels of hemoglobin.

Metabolic and other changes might be possible, most likelyincreased levels of potassium and urea in the blood, present crystal urine andblood in the urine.

The patients using lansoprazole may be exposed to increasedrisk of hip fracture, especially the patients using high doses of the drug fora long time. It is possible to experience myalgia, myositis or tetany afterthe use of lansoprazole.

Dermatological side effects are rare, and include skin rash anderythema multiforme (a type of allergic reaction to medications).

Lansoprazole has some allergic potential. It could causetoxic epidermal necrolysis, eosinophilia, Stevens-Johnson syndrome andanaphylactic reactions.

Repiratory side effects are rare, most likely the patientswould suffer from rhinitis or pharyngitis, and sometimes they'd be bothered withcough or symptoms of influenza.

Urinary retention and interstitial nephritis have beenreported as rare urinary side effects of lansoprazole.

The drug rarely has some effect to the heart. Sometimes it mightcause angina, infarction or blood pressure problems.

Lansoprazole is not known to have cancerous potential onthe people. Studies on animals show the increase of gastrin in plasma and increasedrisk of gastric cell carcinoid in female animals.

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