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Tiredness (226)
Tired (143)
Feeling Sick (130)
Rash (120)
Pain In Asophagis (106)
Pain (100)
Diarrhea (76)
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Flucloxacillin Side Effects and Adverse Effects reported to US Food and Drug Administration (FDA)

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Showing 1-25 of 48 

Renal Failure Acute, Eosinophil Count Abnormal (8482843-0)
on Jun 11, 2012 Male from UNITED KINGDOM , 67 years of age, was diagnosed with
  • abscess limb
and was treated with Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: renal failure acute, eosinophil count abnormal. Flucloxacillin dosage: 500mg Oral.
Associated medications used:
  • Ibuprofen (200 Mg Oral)


Renal Failure Acute (8474595-5)
Patient was taking Flucloxacillin. Patient felt the following Flucloxacillin side effects: renal failure acute on Jun 08, 2012 from UNITED KINGDOM Additional patient health information: Female , 87 years of age, weighting 73.00 lb, was diagnosed with
  • orthopedic procedure
and. Flucloxacillin dosage: 4 G Gram(s), Intravenous (not Otherwise Specified).
Multiple prescriptions taken:
  • Quinine Sulfate
  • Bisoprolol Fumarate
  • Levothyroxine Sodium
  • Warfarin Sodium
  • Alendronate Sodium
  • Candesartan
  • Digoxin
  • Alverine
Patient was hospitalized and became disabled.

Renal Failure Acute, Blood Creatinine Increased, Eosinophil Count Abnormal (8461540-1)
Adverse event was reported on Jun 11, 2012 by a Male taking Flucloxacillin (Dosage: N/A) was diagnosed with
  • abscess limb
and. Location: UNITED KINGDOM , 67 years of age, weighting 158.7 lb, After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: renal failure acute, blood creatinine increased, eosinophil count abnormal.
Multiple concurrent drugs taken:
  • Ibuprofen


Blood Creatinine Increased, Eosinophil Count Abnormal, Renal Failure Acute (8458117-0)
on Jun 11, 2012 Male from UNITED KINGDOM , 67 years of age, weighting 158.7 lb, was diagnosed with
  • abscess limb
and was treated with Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: blood creatinine increased, eosinophil count abnormal, renal failure acute. Flucloxacillin dosage: 500 Mg, Unk.
Associated medications used:
  • Ibuprofen (200 Mg, Unk)



Metabolic Acidosis (8443246-8)
on Jun 04, 2012 Female from IRELAND , 83 years of age, was treated with Flucloxacillin. Patient felt the following Flucloxacillin side effects: metabolic acidosis. Flucloxacillin dosage: N/A.
Multiple prescriptions taken:
  • Acetaminophen
  • Irbesartan
  • Metformin Hcl
Patient was hospitalized.

Abdominal Pain, Gastrointestinal Haemorrhage, Melaena (8438120-7)
Patient was taking Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: abdominal pain, gastrointestinal haemorrhage, melaena on Jun 12, 2012 from UNITED KINGDOM Additional patient health information: Female , 47 years of age, weighting 172.0 lb, was diagnosed with
  • skin infection
and. Flucloxacillin dosage: N/A.
Multiple concurrent drugs taken:
  • Micronor
  • Amoxicillin


Acid Base Balance Abnormal, Metabolic Acidosis, Hyperkalaemia (8417531-X)
Adverse event was reported on Jun 04, 2012 by a Female taking Flucloxacillin (Dosage: N/A) was diagnosed with
  • wound infection
and. Location: UNITED KINGDOM , 83 years of age, Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: acid base balance abnormal, metabolic acidosis, hyperkalaemia.
Associated medications used:
  • Metformin Hcl
  • Irbesartan
  • Acetaminophen


Metabolic Acidosis (8388742-7)
on May 14, 2012 Female from GERMANY , 63 years of age, was treated with Flucloxacillin. Patient felt the following Flucloxacillin side effects: metabolic acidosis. Flucloxacillin dosage: N/A.
Multiple prescriptions taken:
  • Metformin Hcl
  • Atorvastatin Calcium
  • Amlodipine Besylate
  • Panadeine Co (500mg Tab Is The Strength. 1df=2 Tab 6 Hourly)
  • Creon (1df=10000 Unit Nos)


Panniculitis, Skin Mass, Oedema Peripheral, Rash (8358819-0)
on May 08, 2012 Female from PORTUGAL , 34 years of age, was diagnosed with
  • odynophagia
  • pyrexia
and was treated with Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: panniculitis, skin mass, oedema peripheral, rash. Flucloxacillin dosage: N/A.

Pruritus, Condition Aggravated, Burning Sensation (8336589-X)
Patient was taking Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: pruritus, condition aggravated, burning sensation on May 02, 2012 from UNITED KINGDOM Additional patient health information: Female , 32 years of age, weighting 143.3 lb, was diagnosed with
  • eczema
and. Flucloxacillin dosage: 500 Mg, Qid.
Associated medications used:
  • Protopic (1 Df, Bid)


Rash, Blister, Hypersensitivity (8320975-8)
Adverse event was reported on Apr 24, 2012 by a Male taking Flucloxacillin (Dosage: N/A) . Location: UNITED KINGDOM , 39 years of age, Patient felt the following Flucloxacillin side effects: rash, blister, hypersensitivity.
Multiple prescriptions taken:
  • Terbinafine Hcl


Myopathy, Blood Creatine Phosphokinase Increased, Chromaturia, Mobility Decreased, Pneumonia (8270966-0)
on Mar 27, 2012 Male from UNITED KINGDOM , 78 years of age, was diagnosed with
  • pneumonia
and was treated with Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: myopathy, blood creatine phosphokinase increased, chromaturia, mobility decreased, pneumonia. Flucloxacillin dosage: N/A.
Multiple concurrent drugs taken:
  • Fusidic Acid
  • Simvastatin
Patient was hospitalized.

Chromaturia, Myopathy, Mobility Decreased, Blood Creatine Phosphokinase Increased (8269126-9)
on Mar 27, 2012 Male from UNITED KINGDOM , 78 years of age, was diagnosed with
  • pneumonia
and was treated with Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: chromaturia, myopathy, mobility decreased, blood creatine phosphokinase increased. Flucloxacillin dosage: N/A.
Associated medications used:
  • Simvastatin
  • Fusidic Acid
Patient was hospitalized.

Myopathy, Chromaturia, Blood Creatine Phosphokinase Increased (8254993-5)
Patient was taking Flucloxacillin. Patient felt the following Flucloxacillin side effects: myopathy, chromaturia, blood creatine phosphokinase increased on Mar 27, 2012 from UNITED KINGDOM Additional patient health information: Male , 78 years of age, was diagnosed with
  • pneumonia
and. Flucloxacillin dosage: N/A.
Multiple prescriptions taken:
  • Fusidic Acid
  • Simvastatin
Patient was hospitalized.

Weight Decreased, Polyuria, Diabetes Mellitus, Fatigue, Polydipsia, Dry Mouth (8241641-3)
Adverse event was reported on Mar 13, 2012 by a Male taking Flucloxacillin (Dosage: N/A) was diagnosed with
  • nail infection
  • hypercholesterolaemia
and. Location: UNITED KINGDOM , 46 years of age, After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: weight decreased, polyuria, diabetes mellitus, fatigue, polydipsia, dry mouth.
Multiple concurrent drugs taken:
  • Simvastatin (Unk)
Patient was hospitalized and became disabled.

Dry Mouth, Diabetes Mellitus, Weight Decreased, Fatigue, Polydipsia, Polyuria (8236963-6)
on Mar 13, 2012 Male from UNITED KINGDOM , 46 years of age, was diagnosed with
  • nail infection
  • hypercholesterolaemia
and was treated with Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: dry mouth, diabetes mellitus, weight decreased, fatigue, polydipsia, polyuria. Flucloxacillin dosage: Unk.
Associated medications used:
  • Simvastatin (Unk)
Patient was hospitalized and became disabled.

Metabolic Acidosis (8193884-5)
on Feb 23, 2012 Female from IRELAND , 83 years of age, was diagnosed with
  • wound infection
and was treated with Flucloxacillin. Patient felt the following Flucloxacillin side effects: metabolic acidosis. Flucloxacillin dosage: N/A.
Multiple prescriptions taken:
  • Irbesartan
  • Acetaminophen
  • Metformin Hcl
  • Acetaminophen
Patient was hospitalized.

Jaundice, Hepatotoxicity (8143747-6)
Patient was taking Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: jaundice, hepatotoxicity on Feb 06, 2012 from UNITED KINGDOM Additional patient health information: Male , 87 years of age, weighting 176.4 lb, . Flucloxacillin dosage: 2g, 4/1 Days. Patient was hospitalized.

Dyspnoea, Arteriospasm Coronary, Acute Coronary Syndrome, Ventricular Hypokinesia, Stress Cardiomyopathy, Chest Discomfort (8048647-8)
Adverse event was reported on Jan 09, 2012 by a Female taking Flucloxacillin (Dosage: N/A) was diagnosed with
  • mastitis
  • lactation puerperal increased
  • breast engorgement
and. Location: SWEDEN , 37 years of age, Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: dyspnoea, arteriospasm coronary, acute coronary syndrome, ventricular hypokinesia, stress cardiomyopathy, chest discomfort.
Associated medications used:
  • Bromocriptine Mesylate (2.5 Mg, Unk)
Patient was hospitalized.

Agranulocytosis (8032876-3)
on Jan 03, 2012 Female from NETHERLANDS , 51 years of age, was diagnosed with
  • endocarditis
and was treated with Flucloxacillin. Patient felt the following Flucloxacillin side effects: agranulocytosis. Flucloxacillin dosage: 500 Mg, Unk.
Multiple prescriptions taken:
  • Pantoprazole (20 Mg, 1x/day)
Patient was hospitalized.

Palpitations, Withdrawal Syndrome, Chest Pain, Blood Pressure Abnormal (7797448-4)
on Oct 03, 2011 Male from UNITED KINGDOM , 41 years of age, was diagnosed with
  • lower respiratory tract infection
and was treated with Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: palpitations, withdrawal syndrome, chest pain, blood pressure abnormal. Flucloxacillin dosage: 500 Mg, 4x/day.
Multiple concurrent drugs taken:
  • Varenicline Tartrate (1 Mg, 2x/day)
  • Salbutamol (Unk)
Patient was hospitalized.

Withdrawal Syndrome, Pain, Palpitations (7686867-2)
Patient was taking Flucloxacillin. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: withdrawal syndrome, pain, palpitations on Aug 12, 2011 from UNITED KINGDOM Additional patient health information: Male , 41 years of age, was diagnosed with
  • lower respiratory tract infection
and. Flucloxacillin dosage: 500 Mg, 4x/day.
Associated medications used:
  • Varenicline Tartrate (1 Mg, 2x/day)
  • Salbutamol (Unk)
Patient was hospitalized.

Blister, Rash Macular (7591037-2)
Adverse event was reported on Jun 28, 2011 by a Male taking Flucloxacillin (Dosage: Unk) . Location: UNITED KINGDOM , 58 years of age, weighting 187.4 lb, Patient felt the following Flucloxacillin side effects: blister, rash macular.
Multiple prescriptions taken:
  • Epaderm (Unk)
  • Ramipril (Unk)
  • Amlodipine Besylate (Unk)
  • Propranolol (Unk)
  • Fexofenadine (Unk)


Depressed Level Of Consciousness, Tachycardia, Sepsis, Metabolic Acidosis, Hypotension, Tachypnoea (7430811-X)
on Apr 15, 2011 Female from UNITED KINGDOM , 50 years of age, was treated with Flucloxacillin. After Flucloxacillin was administered, patient encountered several Flucloxacillin side effects: depressed level of consciousness, tachycardia, sepsis, metabolic acidosis, hypotension, tachypnoea. Flucloxacillin dosage: 8 G, Unk.
Multiple concurrent drugs taken:
  • Paracetamol (4g, Daily)
  • Carbamazepine
  • Phenobarbital
  • Phenytoin
Patient was hospitalized.

Renal Failure Acute, Rhabdomyolysis (7428521-8)
on Mar 29, 2011 Male from UNITED KINGDOM , 81 years of age, was treated with Flucloxacillin And Fusidic Acid/sodium Fusidate. Directly after, patient experienced the unwanted or unexpected Flucloxacillin side effects: renal failure acute, rhabdomyolysis. Flucloxacillin And Fusidic Acid/sodium Fusidate dosage: N/A.
Associated medications used:
  • Simvastatin (40mg)


Showing 1-25 of 48 

Flucloxacillin Health Episodes

How Can Flucloxacillin Affect You?

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i have skin infection last week,i m on flucoxacilin 500mg and peniclin 500mg....Keep Reading

I was also prescribed Erythromycin from a Walk-in Clinic. They originally prescribed me ...Keep Reading

Started taking this flucloxcillin 4 times a day my throat felt like it was ...Keep Reading

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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.

Flucloxacillin Information

More About Flucloxacillin

Side Effects reported to FDA: 48. View Flucloxacillin Adverse Reports

Flucloxacillin safety alerts: No

Reported deaths: 2

Reported hospitalizations: 27

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