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Losec Side Effects

Report Losec Side Effects

If you experienced any harmful or unwanted effects of Losec, please share your experience. This could help to raise awareness about Losec side effects, identify uknown risks and inform health professionals and patients taking Losec.

Examples: headache, dizziness


The most commonly reported Losec side effects are:
Pain Just Under My Ribcage (68 reports)
Bloating (35 reports)
Excessive Gas (32 reports)
Irregular Heart Beat (28 reports)
Bad Mouth Taste (20 reports)
Tired (16 reports)
Diarrhea (13 reports)
Libido (7 reports)
Low Iron (7 reports)

If you have experienced a side effect listed above, you can check a box to report it.


To view a complete list of submitted side effects, please follow the link Losec side effects . You can also compare Losec side effects or view FDA reports.

Losec Side Effects reported to FDA

The following Losec reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
The FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.


The appearance of Losec on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has identified a causal relationship between the drug and the listed risk.

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Idiopathic Thrombocytopenic Purpura, Ejection Fraction Decreased
on Feb 22, 2012 Female from CANADA , 64 years of age, was treated with Losec (canada). Directly after, patient experienced the unwanted or unexpected Losec side effects: idiopathic thrombocytopenic purpura, ejection fraction decreased. Losec (canada) dosage: N/A.
Associated medications used:
  • Herceptin
  • Prednisone Tab
  • Abraxane
  • Perindopril Erbumine


Thyroiditis
Patient was taking Losec /00661201/. Patient felt the following Losec side effects: thyroiditis on Jan 09, 2012 from CANADA Additional patient health information: Female , 37 years of age, . Losec /00661201/ dosage: 20 Mg, Qd.
Multiple prescriptions taken:
  • Metformin Hcl (1000 Mg, Bid)
  • Victoza (0.6 Mg, Qd)
  • Vitamin B12 /00056201/ (1200 Mg, Qd)


Suicidal Ideation, Visual Impairment, Dizziness, Bruxism, Insomnia, Headache, Convulsion, Myalgia, Confusional State
Adverse event was reported on Nov 24, 2011 by a Male taking Losec (omeprazole) (omeprazole) (Dosage: N/A) . Location: DENMARK , 61 years of age, weighting 189.6 lb, After Losec was administered, patient encountered several Losec side effects: suicidal ideation, visual impairment, dizziness, bruxism, insomnia, headache, convulsion, myalgia, confusional state.
Multiple concurrent drugs taken: Patient was hospitalized.

Weight Decreased, Juvenile Arthritis, Lethargy, Hyperhidrosis, Inflammatory Marker Increased
on Oct 07, 2011 Male from IRELAND , 36 years of age, weighting 57.32 lb, was treated with Losec /00661201/. Directly after, patient experienced the unwanted or unexpected Losec side effects: weight decreased, juvenile arthritis, lethargy, hyperhidrosis, inflammatory marker increased. Losec /00661201/ dosage: 20 Mg, Unk.
Associated medications used:
  • Prolia (60 Mg, Unk)
  • Deltacortril /00016201/ (5 Mg, Unk)
  • Naproxen
  • Amitriptyline Hcl (10 Mg, Unk)
  • Zydol /00599202/ (100 Mg, Unk)
Patient was hospitalized.


Abdominal Pain, Nausea, Blood Potassium Decreased, Blood Sodium Decreased
on Aug 22, 2011 Female from CANADA , 84 years of age, was treated with Losec /can/. Patient felt the following Losec side effects: abdominal pain, nausea, blood potassium decreased, blood sodium decreased. Losec /can/ dosage: 20 Mg, Unk.
Multiple prescriptions taken:
  • Cymbalta
  • Tramadol Hydrochloride/acetaminophen


Arthralgia, Malaise
Patient was taking Losec /00661201/. After Losec was administered, patient encountered several Losec side effects: arthralgia, malaise on Aug 26, 2011 from IRELAND Additional patient health information: Female , 62 years of age, . Losec /00661201/ dosage: N/A.
Multiple concurrent drugs taken:
  • Lactulose
  • Xanax
  • Neulasta (6 Mg, Q3wk)
  • Valoid /00014902/
  • Zofran
  • Dexamethasone
  • Antineoplastic Agents
Patient was hospitalized.

Nausea, Duodenitis, Gastritis, Pharyngitis
Adverse event was reported on Mar 29, 2011 by a Male taking Losec Mups (Dosage: N/A) was diagnosed with and. Location: BRAZIL , child 5 years of age, Directly after, patient experienced the unwanted or unexpected Losec side effects: nausea, duodenitis, gastritis, pharyngitis.

Nasopharyngitis, Sputum Discoloured, Lower Respiratory Tract Infection, Bronchitis, Sinusitis
on Mar 01, 2011 Male from CANADA , weighting 145.1 lb, was treated with Losec /00661201/. Patient felt the following Losec side effects: nasopharyngitis, sputum discoloured, lower respiratory tract infection, bronchitis, sinusitis. Losec /00661201/ dosage: N/A.
Multiple prescriptions taken:
  • Cimzia ((200 Mg 1x/2 Weeks Subcutaneous))
  • Salmon
  • Cod Liver
  • Zopiclone


Liver Function Test Abnormal, Rhabdomyolysis
on Nov 16, 2010 Male from NETHERLANDS , weighting 145.5 lb, was diagnosed with and was treated with Losec Mups. After Losec was administered, patient encountered several Losec side effects: liver function test abnormal, rhabdomyolysis. Losec Mups dosage: N/A.
Multiple concurrent drugs taken:
  • Paracetamol
  • Simvastatin
  • Cozaar
  • Lactitol
  • Acetylsalicylic Acid
  • Ferrosulfate
  • Nitroglycerin
  • Furosemide
Patient was hospitalized.

Dizziness, Dyspepsia, Galactorrhoea, Headache, Helicobacter Infection, Hyperprolactinaemia, Nausea, Vomiting
Patient was taking Losec Active Substances: Omeprazole. Directly after, patient experienced the unwanted or unexpected Losec side effects: dizziness, dyspepsia, galactorrhoea, headache, helicobacter infection, hyperprolactinaemia, nausea, vomiting on Aug 31, 2010 from PAKISTAN Additional patient health information: Female , 13 years of age, was diagnosed with and. Losec Active Substances: Omeprazole dosage: Dose: 20 Mg Milligram(s) Sep. Dosages / Interval: 2 In 1 Day.
Associated medications used:
  • Lansoprazole
  • Mefenamic Acid
  • Domperidone (Intravenous)
  • Diclofenac Injection (Intravenous)
  • Acetaminophen
  • Ranitidine
  • Sucralfate


Hypomagnesaemia
Adverse event was reported on Jul 07, 2010 by a Female taking Losec Active Substances: Omeprazole (Dosage: 20 Mg Milligram(s)) was diagnosed with and. Location: UNITED KINGDOM , 59 years of age, Patient felt the following Losec side effects: hypomagnesaemia.
Multiple prescriptions taken:
  • Atenolol
  • Calceos
  • Carbimazole
  • Domperidone
  • Fexofenadine
  • Fluoxetine
  • Loperamide Hydrochloride
  • One-alpha


Arrhythmia, Supraventricular Tachycardia
on May 31, 2010 Male from CANADA , 26 years of age, weighting 106.0 lb, was treated with Losec I.v.. After Losec was administered, patient encountered several Losec side effects: arrhythmia, supraventricular tachycardia. Losec I.v. dosage: N/A.

Chest Discomfort
on May 31, 2010 Female from CANADA , 75 years of age, was treated with Losec I.v.. Directly after, patient experienced the unwanted or unexpected Losec side effects: chest discomfort. Losec I.v. dosage: N/A.
Associated medications used:

Eye Disorder, Lethargy, Sleep Disorder, Somnolence
Patient was taking Losec Mups. Patient felt the following Losec side effects: eye disorder, lethargy, sleep disorder, somnolence on Mar 19, 2010 from IRELAND Additional patient health information: Male , child 3 years of age, was diagnosed with and. Losec Mups dosage: N/A.
Multiple prescriptions taken:
  • Ventolin
  • Singulair Pediatric
  • Flixotide Evohaler
  • Neoclarityn
  • Avamys


Joint Swelling
Adverse event was reported on Dec 23, 2009 by a Female taking Losec (Dosage: 20 Mg Milligram(s) 1 In 1 Day Oral) was diagnosed with and. Location: UNITED KINGDOM , 48 years of age, After Losec was administered, patient encountered several Losec side effects: joint swelling.
Multiple concurrent drugs taken: Patient was hospitalized.

Atrial Fibrillation, C-reactive Protein Increased, Liver Function Test Abnormal, Pericarditis, Pyrexia
on Dec 23, 2009 Male from UNITED KINGDOM , 58 years of age, weighting 220.5 lb, was diagnosed with
  • chest pain
  • hypertension
  • antiphospholipid syndrome
  • hypercholesterolaemia
and was treated with Losec. Directly after, patient experienced the unwanted or unexpected Losec side effects: atrial fibrillation, c-reactive protein increased, liver function test abnormal, pericarditis, pyrexia. Losec dosage: N/A.
Associated medications used: Patient was hospitalized.

Joint Swelling
on Dec 23, 2009 Female from UNITED KINGDOM , 48 years of age, was diagnosed with and was treated with Losec. Patient felt the following Losec side effects: joint swelling. Losec dosage: N/A. Patient was hospitalized.

Epistaxis, Mouth Haemorrhage, Nausea, Oesophagitis, Reflux Oesophagitis, Vomiting
Patient was taking Losec. After Losec was administered, patient encountered several Losec side effects: epistaxis, mouth haemorrhage, nausea, oesophagitis, reflux oesophagitis, vomiting on Dec 10, 2009 from BRAZIL Additional patient health information: Male , 51 years of age, was diagnosed with and. Losec dosage: N/A.
Multiple concurrent drugs taken:
  • Nexium
  • Digesan
  • Buscopan Compound
  • Luftal


Anaemia, Breast Cancer, Gastritis Erosive, Gastrooesophageal Reflux Disease, Heart Rate Increased, Hysterectomy, Malignant Breast Lump Removal, Meningioma
Adverse event was reported on Dec 10, 2009 by a Female taking Losec (Dosage: N/A) . Location: CANADA , 59 years of age, Directly after, patient experienced the unwanted or unexpected Losec side effects: anaemia, breast cancer, gastritis erosive, gastrooesophageal reflux disease, heart rate increased, hysterectomy, malignant breast lump removal, meningioma. Patient was hospitalized.

Hypomagnesaemia, Nausea, Vomiting
on Dec 01, 2009 Female from NETHERLANDS , 61 years of age, was diagnosed with and was treated with Losec. Patient felt the following Losec side effects: hypomagnesaemia, nausea, vomiting. Losec dosage: N/A.
Multiple prescriptions taken: Patient was hospitalized.

Hypomagnesaemia, Nausea, Vomiting
on Nov 30, 2009 Female from NETHERLANDS , 61 years of age, was diagnosed with and was treated with Losec. After Losec was administered, patient encountered several Losec side effects: hypomagnesaemia, nausea, vomiting. Losec dosage: N/A.
Multiple concurrent drugs taken: Patient was hospitalized.

Nutritional Condition Abnormal, Oesophageal Haemorrhage, Pneumonia Aspiration
Patient was taking Losec. Directly after, patient experienced the unwanted or unexpected Losec side effects: nutritional condition abnormal, oesophageal haemorrhage, pneumonia aspiration on Nov 24, 2009 from AUSTRALIA Additional patient health information: Male , 64 years of age, was diagnosed with and. Losec dosage: N/A.
Associated medications used:
  • Tegretol
  • Coloxyl (Occassionally)
  • Ventolin
Patient was hospitalized.

Hypocalcaemia, Hypomagnesaemia
Adverse event was reported on Nov 17, 2009 by a Female taking Losec Mups (Dosage: N/A) . Location: NETHERLANDS , 55 years of age, weighting 132.3 lb, Patient felt the following Losec side effects: hypocalcaemia, hypomagnesaemia.

Nutritional Condition Abnormal, Oesophageal Haemorrhage, Pneumonia Aspiration
on Nov 16, 2009 Male from AUSTRALIA , 64 years of age, was diagnosed with and was treated with Losec. After Losec was administered, patient encountered several Losec side effects: nutritional condition abnormal, oesophageal haemorrhage, pneumonia aspiration. Losec dosage: N/A.
Multiple concurrent drugs taken: Patient was hospitalized.

Blood Creatine Phosphokinase Increased, Body Temperature Increased, Decreased Appetite, Diarrhoea, Nausea, Tubulointerstitial Nephritis
on Oct 16, 2009 Patient from SWEDEN , 73 years of age, was diagnosed with and was treated with Losec. Directly after, patient experienced the unwanted or unexpected Losec side effects: blood creatine phosphokinase increased, body temperature increased, decreased appetite, diarrhoea, nausea, tubulointerstitial nephritis. Losec dosage: N/A. Patient was hospitalized.

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Record and Track Your Side Effects

It is very important to keep track of all side effects and discuss them with your doctor. If you think you may have a medical emergency, call your doctor or 911 immediately.

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Most drugs have a large list of nonsevere or mild adverse effects which do not rule out continued usage. These effects depend on individual sensitivity, and can include nausea, dizziness, diarrhea, malaise, vomiting, headache, dermatitis, dry mouth, etc. Check commonly reported side effects . These can be considered a form of pseudo-allergic reaction, as not all users experience these effects; many users experience none at all.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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JustAnswer.com

Safety Alerts, Active Ingredients, Usage Information

Alternative LOSEC Names:OMEPRAZOL

Active Ingredient: OMEPRAZOL

More About Losec

Side Effects reported to FDA: 156

Losec safety alerts: 2009 2007

Reported deaths: 8

Reported hospitalizations: 55

Clopidogrel (marketed as Plavix) and Omeprazole (marketed as Prilosec) - Drug Interaction

Audience: Cardiovascular healthcare professionals, pharmacists

[Posted 11/17/2009] FDA notified healthcare professionals of new safety information concerning an interaction between clopidogrel (Plavix), an anti-clotting medication, and omeprazole (Prilosec/Prilosec OTC), a proton pump inhibitor (PPI) used to reduce stomach acid.  New data show that when clopidogrel and omeprazole are taken together, the effectiveness of clopidogrel is reduced. Patients at risk for heart attacks or strokes who use clopidogrel to prevent blood clots will not get the full effect of this medicine if they are also taking omeprazole. Separating the dose of clopidogrel and omeprazole in time will not reduce this drug interaction.

Other drugs that are expected to have a similar effect and should be avoided in combination with clopidogrel include: cimetidine, fluconazole, ketoconazole, voriconazole, etravirine, felbamate, fluoxetine, fluvoxamine, and ticlopidine. 

Recommendations for healthcare professionals are provided in the "Information for Healthcare Professionals" sheet.

[11/17/2009 - Information for Healthcare Professionals - FDA]
[11/17/2009 - Public Health Advisory - FDA]
[11/17/2009 - Follow-Up to January 2009 Early Communication - FDA]

Previous MedWatch Alert:

[01/26/2009] Clopidogrel bisulfate (marketed as Plavix) Early Communication 

Latest Losec clinical trials