Cephalexin Pyrexia Side Effect Reports


The following Cephalexin Pyrexia side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Pyrexia, can occur, and what you can do about them.

A side effect could appear soon after you start Cephalexin or it might take time to develop.


Diarrhoea, Abdominal Pain Upper, Flatulence, Abdominal Distension, Pyrexia

This Pyrexia side effect was reported by a consumer or non-health professional from US. A 29-year-old female patient (weight:NA) experienced the following symptoms/conditions: urinary tract infection. The patient was prescribed Cephalexin (dosage: 20 Twice Daily, Taken By Mouth), which was started on Nov 13, 2013. Concurrently used drugs: NA. When starting to take Cephalexin the consumer reported the following symptoms:
  • Diarrhoea
  • Abdominal Pain Upper
  • Flatulence
  • Abdominal Distension
  • Pyrexia
These side effects may potentially be related to Cephalexin.
Clostridium Difficile Colitis, Pyrexia, Mental Status Changes, Decreased Appetite

This Pyrexia Cephalexin side effect was reported by a pharmacist from US on Oct 30, 2013. A male , weighting 261.5 lb, was treated with Cephalexin. The patient presented the following health conditions:
  • Clostridium Difficile Colitis
  • Pyrexia
  • Mental Status Changes
  • Decreased Appetite
. Cephalexin dosage: NA. Additional drugs used at the same time: NA. The patient was hospitalized.
Fatigue, Pain, Rash Erythematous, Eschar, Pyrexia

This is a Cephalexin side effect report of a 57-year-old patient (weight:NA) from US, suffering from the following symptoms/conditions: antibiotic prophylaxis, who was treated with Cephalexin (dosage:NA, start time: May 16, 2011), combined with: NA., and developed a serious reaction and a Pyrexia side effect. The patient presented with:
  • Fatigue
  • Pain
  • Rash Erythematous
  • Eschar
  • Pyrexia
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Cephalexin treatment in patients suffering from antibiotic prophylaxis, resulting in Pyrexia.
Pyrexia, Rash Macular

A 84-year-old patient (weight: NA) from AU with the following symptoms: NA started Cephalexin treatment (dosage: 1.5 G, Qd) on NS. Soon after starting Cephalexin treatment, the consumer experienced several side effects, including:
  • Pyrexia
  • Rash Macular
. Concurrently used drugs:
  • Clindamycin (1.3 G, Qd)
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Cephalexin side effects, such as Pyrexia.
Nausea, Vomiting, Malaise, Asthenia, Pyrexia, Liver Function Test Abnormal, Cholelithiasis, Hepatitis A Antibody Positive

A patient from US was prescribed and started Cephalexin on Apr 08, 2013. Patient felt the following Cephalexin side effects: nausea, vomiting, malaise, asthenia, pyrexia, liver function test abnormal, cholelithiasis, hepatitis a antibody positive Additional patient health information: male , 77 years of age, weighting 196.4 lb, The consumer reported the following symptoms: was diagnosed with and. Cephalexin dosage: 500 Mg Bid Po. Concurrently used drugs: NA. The patient was hospitalized.
Erythema Multiforme, Fatigue, Hyperhidrosis, Lymphadenopathy, Oedema Mouth, Pyrexia, Swollen Tongue

This report suggests a potential Cephalexin Pyrexia side effect(s) that can have serious consequences. A 23-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Cephalexin (dosage: NA) starting Oct 11, 2010. Soon after starting Cephalexin the patient began experiencing various side effects, including:
  • Erythema Multiforme
  • Fatigue
  • Hyperhidrosis
  • Lymphadenopathy
  • Oedema Mouth
  • Pyrexia
  • Swollen Tongue
Drugs used concurrently:
  • Citalopram Hydrobromide
  • Folbee Plus
The patient was hospitalized. Although Cephalexin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Pyrexia, may still occur.
Blood Potassium Decreased, Chills, Diarrhoea, Headache, Pain, Pyrexia, Vomiting

An adverse event was reported by a health professional on Dec 28, 2009 by a Female taking Cephalexin (dosage: 500mg Tid, Po) was diagnosed with and. Location: UNITED STATES , 46 years of age, weighting 145.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: blood potassium decreased, chills, diarrhoea, headache, pain, pyrexia, vomiting. Additional medications/treatments:
Associated medications used:
  • Lamictal
  • Lexapro
  • Requip
  • Zocor
The patient was hospitalized.
Blood Creatine Phosphokinase Increased, Blood Creatinine Increased, Influenza Like Illness, Lower Respiratory Tract Infection, Malaise, Petechiae, Pyrexia, Renal Failure Acute, Rhabdomyolysis

This Pyrexia problem was reported by a health professional from UNITED KINGDOM. A 38-year-old patient (weight: NA) was diagnosed with the following medical condition(s): influenza like illness,petechiae,urine output decreased,schizophrenia.On Jan 06, 2003 a consumer started treatment with Cephalexin (dosage: NA). The following drugs/medications were being taken at the same time: NA. When commencing Cephalexin, the patient experienced the following unwanted symptoms /side effects:
  • Blood Creatine Phosphokinase Increased
  • Blood Creatinine Increased
  • Influenza Like Illness
  • Lower Respiratory Tract Infection
  • Malaise
  • Petechiae
  • Pyrexia
  • Renal Failure Acute
  • Rhabdomyolysis
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Pyrexia, may become evident only after a product is in use by the general population.
Blood Creatine Phosphokinase Increased, Blood Creatinine Increased, Influenza Like Illness, Lower Respiratory Tract Infection, Malaise, Petechiae, Pyrexia, Renal Failure Acute, Rhabdomyolysis

This is a Cephalexin side effect report of a 38-year-old patient (weight: NA) from UNITED KINGDOM. The patient developed the following symptoms/conditions: influenza like illness,petechiae,urine output decreased,schizophrenia and was treated with Cephalexin (dosage: NA) starting Jan 06, 2003. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Blood Creatine Phosphokinase Increased
  • Blood Creatinine Increased
  • Influenza Like Illness
  • Lower Respiratory Tract Infection
  • Malaise
  • Petechiae
  • Pyrexia
  • Renal Failure Acute
  • Rhabdomyolysis
The patient was hospitalized. This opens a possibility that Cephalexin could cause Pyrexia and that some patients may be more susceptible.
Blood Creatinine Increased, Blood Urea Increased, Leukaemia Recurrent, Neutropenia, Pyrexia, Renal Impairment, Thrombocytopenia, Thrombotic Microangiopathy

This Pyrexia side effect was reported by a physician from UNITED KINGDOM on Jan 21, 2009. A patient from UNITED KINGDOM , 46 years of age, was diagnosed with and was treated with Cephalexin. Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: blood creatinine increased, blood urea increased, leukaemia recurrent, neutropenia, pyrexia, renal impairment, thrombocytopenia, thrombotic microangiopathy. Cephalexin dosage: NA. These side effects may potentially be related to Cephalexin.
Chills, Diarrhoea, Pyrexia, Vomiting

This Pyrexia side effect was reported by a consumer or non-health professional from UNITED STATES. A female patient (weight:NA) experienced the following symptoms/conditions: dental cleaning. The patient was prescribed Cephalexin (dosage: 500 Mg Caps 2 Caps Each Appt. Mouth), which was started on Apr 01, 2007. Concurrently used drugs: NA. When starting to take Cephalexin the consumer reported the following symptoms:
  • Chills
  • Diarrhoea
  • Pyrexia
  • Vomiting
These side effects may potentially be related to Cephalexin.
Abdominal Pain, Deep Vein Thrombosis, Haemoglobin Decreased, Hypovolaemic Shock, Malaise, Muscle Haemorrhage, Pyrexia

This Pyrexia Cephalexin side effect was reported by a consumer or non-health professional from UNITED KINGDOM on Apr 15, 2008. A Female , 60 years of age, was diagnosed with and was treated with Cephalexin. The patient presented the following health conditions:
  • Abdominal Pain
  • Deep Vein Thrombosis
  • Haemoglobin Decreased
  • Hypovolaemic Shock
  • Malaise
  • Muscle Haemorrhage
  • Pyrexia
. Cephalexin dosage: NA. Additional drugs used at the same time:
  • Metronidazole Hcl
  • Trimethoprim
  • Warfarin Sodium
  • Acebutolol
  • Indapamide
  • Nifedipine
The patient was hospitalized.
Delirium, Disorientation, Dizziness, Dysstasia, Pyrexia, Scratch, Somnolence, Speech Disorder, Tremor

This is a Cephalexin side effect report of a 6-year-old patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: localised infection, who was treated with Cephalexin (dosage:1 And 1/4 Tsp 3xday Po, start time: Jan 31, 2008), combined with: NA., and developed a serious reaction and a Pyrexia side effect. The patient presented with:
  • Delirium
  • Disorientation
  • Dizziness
  • Dysstasia
  • Pyrexia
  • Scratch
  • Somnolence
  • Speech Disorder
  • Tremor
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Cephalexin treatment in patients suffering from localised infection, resulting in Pyrexia.
Delirium, Disorientation, Dizziness, Hypersomnia, Ill-defined Disorder, Incoherent, Pyrexia, Skin Disorder, Speech Disorder

A 7-year-old patient (weight: NA) from UNITED STATES with the following symptoms: localised infection started Cephalexin treatment (dosage: 1 And 1/4 Tsp 3xday Po) on Jan 31, 2008. Soon after starting Cephalexin treatment, the consumer experienced several side effects, including:
  • Delirium
  • Disorientation
  • Dizziness
  • Hypersomnia
  • Ill-defined Disorder
  • Incoherent
  • Pyrexia
  • Skin Disorder
  • Speech Disorder
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Cephalexin side effects, such as Pyrexia.
Convulsion, Dizziness, Eye Rolling, Hot Flush, Malaise, Nausea, Pyrexia

A female patient from UNITED STATES was prescribed and started Cephalexin on Jan 11, 2008. After Cephalexin was administered, patient encountered several Cephalexin side effects: convulsion, dizziness, eye rolling, hot flush, malaise, nausea, pyrexia Additional patient health information: Female , 29 years of age, weighting 170.0 lb, The consumer reported the following symptoms: was diagnosed with and. Cephalexin dosage: 500mg 4x Day Po. Concurrently used drugs: NA. The patient was hospitalized.
Bacterial Infection, Chills, Dysuria, Penile Infection, Pyrexia, Streptococcal Infection

This report suggests a potential Cephalexin Pyrexia side effect(s) that can have serious consequences. A 44-year-old patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): penile oedema and used Cephalexin (dosage: NA) starting NS. Soon after starting Cephalexin the patient began experiencing various side effects, including:
  • Bacterial Infection
  • Chills
  • Dysuria
  • Penile Infection
  • Pyrexia
  • Streptococcal Infection
Drugs used concurrently:
  • Doxycycline
The patient was hospitalized. Although Cephalexin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Pyrexia, may still occur.
Abdominal Pain, Deep Vein Thrombosis, Haemoglobin Decreased, Hypovolaemic Shock, International Normalised Ratio Decreased, International Normalised Ratio Increased, Muscle Haemorrhage, Pyrexia

An adverse event was reported by a physician on Jun 04, 2007 by a Female taking Cephalexin (dosage: NA) was diagnosed with and. Location: UNITED KINGDOM , 60 years of age, patient began experiencing various side effects, including: Patient felt the following Cephalexin side effects: abdominal pain, deep vein thrombosis, haemoglobin decreased, hypovolaemic shock, international normalised ratio decreased, international normalised ratio increased, muscle haemorrhage, pyrexia. Additional medications/treatments:
Multiple prescriptions taken:
  • Metronidazole
  • Trimethoprim
  • Warfarin Sodium
The patient was hospitalized.
Abdominal Haematoma, Coagulopathy, Deep Vein Thrombosis, Haemoglobin Decreased, Hypovolaemic Shock, International Normalised Ratio Increased, Pyrexia, Retroperitoneal Haematoma

This Pyrexia problem was reported by a consumer or non-health professional from UNITED KINGDOM. A 60-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): urinary tract infection,pulmonary embolism.On NS a consumer started treatment with Cephalexin (dosage: NA). The following drugs/medications were being taken at the same time:
  • Warfarin Sodium
  • Metronidazole
  • Trimethoprim
  • Nifedipine
  • Acebutolol
  • Indapamide
When commencing Cephalexin, the patient experienced the following unwanted symptoms /side effects:
  • Abdominal Haematoma
  • Coagulopathy
  • Deep Vein Thrombosis
  • Haemoglobin Decreased
  • Hypovolaemic Shock
  • International Normalised Ratio Increased
  • Pyrexia
  • Retroperitoneal Haematoma
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Pyrexia, may become evident only after a product is in use by the general population.
Contusion, Haemorrhage, Pharyngolaryngeal Pain, Pruritus, Pyrexia

This is a Cephalexin side effect report of a 48-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: bacterial infection and was treated with Cephalexin (dosage: 1 Cap 2x Daily For 14 Da Po) starting Mar 07, 2007. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Contusion
  • Haemorrhage
  • Pharyngolaryngeal Pain
  • Pruritus
  • Pyrexia
This opens a possibility that Cephalexin could cause Pyrexia and that some female patients may be more susceptible.
Abdominal Pain Upper, Chills, Dyspnoea, Headache, Hypoaesthesia, Oral Pain, Pharyngolaryngeal Pain, Pyrexia

This Pyrexia side effect was reported by a consumer or non-health professional from UNITED STATES on Feb 23, 2007. A female patient from UNITED STATES , weighting 148.0 lb, was diagnosed with and was treated with Cephalexin. Patient felt the following Cephalexin side effects: abdominal pain upper, chills, dyspnoea, headache, hypoaesthesia, oral pain, pharyngolaryngeal pain, pyrexia. Cephalexin dosage: 500 Mg Every 6 Hours 4 Da. These side effects may potentially be related to Cephalexin.

DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Cephalexin Pyrexia Causes and Reviews


A fever is a body temperature that is higher than normal. A normal temperature can vary from person to person, but it is usually around 98.6 F. A fever is not a disease. It is usually a sign that your body is trying to fight an illness or infection.

Infections cause most fevers. You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.

Other causes of fevers include

  • Medicines, including some antibiotics, blood pressure medicines, and anti-seizure medicines
  • Heat illness
  • Cancers
  • Autoimmune diseases
  • Some childhood immunizations

Treatment depends on the cause of your fever. If the fever is very high, your health care provider may recommend taking an over-the-counter medicine such as acetaminophen or ibuprofen. Adults can also take aspirin, but children with fevers should not take aspirin. It is also important to drink enough liquids, to prevent dehydration.


Cephalexin Pyrexia Reviews

Thu, 21 Jun 2012

I also face critical situation low blood pressure,Headache and diarrhea. So i decided to quit and decide not to use like that medicine again.

Mon, 07 Nov 2011

One more pill to go before I finish my dose of Cephalexin for Cellulitis. First of all, the symptom worsened within the first 24 hours - both the doctors failed to tell me that. It did eventually work and about 48 hours later, the swelling and redness from Cellulitis started to decrease. The side effects were not severe, but, at worst, I experienced nausea, stomach ache, diarrhea, and depression (followed by the most whacked out dreams). This is not quite the drug from hell but I am very much ready to finish my dose.

Fri, 16 Mar 2012

After taking Cephalexin I experienced nausea, vomiting and headaches which 800mg of ibuprofen couldn't control. The sweating (head to toe) was profuse and disconcerting.

Sat, 31 Mar 2012

After a double treatment of Cephalexin 500mg 4 times a day, I am still experiencing intestinal discomfort and loose stools. I also get a lot of gas, bloating and it makes it hard to go anywhere because of the sudden diahrrea that goes with it. I will NEVER take this drug again!

Sat, 18 Jun 2011

I am currently on Cephalexin for a kidney infection. I have so far suffered from joint pain, headaches, unusual vaginal pain and itching, dizziness and discovered a sore throat this morning. I plan to finish my dose but it seems like I'm suffering worse now than with my kidney infection.

Fri, 27 Jul 2012


We assess the severity of the wisdom tooth impaction by using a digital OPG and we provide you with an unbiased opinion on whether the wisdom tooth should be removed or not. Some cases can be removed routinely on the dental chair or can be arranged to be removed under general anaesthesia in a day surgery clinic.

Thu, 22 Mar 2012

terrible tablets axiety depression crying stomach pain aggresive feel so low and down benn on these pills on and off for a UTI had investigated nothing wrong i now see a councillor bcos they make me feel in losing it

Sun, 20 Nov 2011

Was prescribed 14 pills - one pill twice a day for an animal bite. By day 3 the bite was healing nicely but I was already feeling crappy (a little dizzy, tired, generally not so good) so I stopped taking the meds altogeher. Now - four full days later I have been having bloody mucas in my stool all day today. It's freaking me out.

Mon, 14 Sep 2009
does Cephalexin cause weight gain?
Sun, 04 Oct 2009
How long after being started on Cephalexin can urticaria occur?
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Cephalexin Side Effects

Rash (54)
Pruritus (52)
Diarrhoea (49)
Urticaria (45)
Pain (43)
Vomiting (43)
Dyspnoea (40)
Nausea (40)
Dizziness (34)
Pyrexia (28)
Headache (28)
Abdominal Pain (27)
Deep Vein Thrombosis (26)
Abdominal Pain Upper (23)
International Normalised Ratio Increased (23)
Malaise (22)
Renal Failure Acute (20)
Anxiety (19)
Fatigue (19)
Anaphylactic Reaction (18)
Injury (16)
Rash Pruritic (15)
Chills (15)
Dehydration (14)
Blister (14)
Hypersensitivity (14)
Haemoglobin Decreased (14)
Pulmonary Embolism (14)
Oedema Peripheral (13)
Hypovolaemic Shock (13)
Arthralgia (13)
Angioedema (12)
Asthenia (12)
Gallbladder Disorder (12)
Muscle Spasms (12)
Depression (12)
Erythema (11)
Condition Aggravated (11)
Haematuria (11)
Skin Exfoliation (11)
Liver Function Test Abnormal (11)
Somnolence (11)
Myalgia (10)
Chest Pain (10)
Pain In Extremity (10)
Swelling Face (10)
Urinary Tract Infection (10)
Tremor (10)
Swelling (10)
Weight Decreased (9)

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