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Cephalexin Somnolence Side Effects

Cephalexin Somnolence Side Effect Reports


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

This information will help you understand how side effects, such as Somnolence, 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.



Renal Failure Acute, Tubulointerstitial Nephritis, Haemodialysis, Hypersensitivity, Somnolence

This Somnolence side effect was reported by a pharmacist from US. A 2-year-old patient (weight:NA) experienced the following symptoms/conditions: urinary tract infection. The patient was prescribed Cephalexin (dosage: NA), which was started on Nov 22, 2013. Concurrently used drugs: NA. When starting to take Cephalexin the consumer reported the following symptoms:
  • Renal Failure Acute
  • Tubulointerstitial Nephritis
  • Haemodialysis
  • Hypersensitivity
  • Somnolence
The patient was hospitalized and became disabled. These side effects may potentially be related to Cephalexin.
Nervous System Disorder, Agitation, Confusional State, Dizziness, Somnolence, Headache, Lethargy, Pneumonia, Syncope

This Somnolence Cephalexin side effect was reported by a consumer or non-health professional from GB on Oct 03, 2013. A Female , 80 years of age, was diagnosed with and was treated with Cephalexin. The patient presented the following health conditions:
  • Nervous System Disorder
  • Agitation
  • Confusional State
  • Dizziness
  • Somnolence
  • Headache
  • Lethargy
  • Pneumonia
  • Syncope
. Cephalexin dosage: 2.00 Timer Per 1.0days. Additional drugs used at the same time:
  • Bisoprolol(bisoprolol)
  • Warfarin(warfarin)
The patient was hospitalized.
Dry Throat, Odynophagia, Hypersensitivity, Somnolence

This is a Cephalexin side effect report of a 19-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: oropharyngeal pain, who was treated with Cephalexin (dosage:NA, start time: Sep 30, 2012), combined with: NA., and developed a serious reaction and a Somnolence side effect. The patient presented with:
  • Dry Throat
  • Odynophagia
  • Hypersensitivity
  • Somnolence
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Cephalexin treatment in female patients suffering from oropharyngeal pain, resulting in Somnolence.

Headache, Agitation, Confusional State, Dizziness, Somnolence, Lethargy, Pneumonia, Nervous System Disorder, Csf Lymphocyte Count Abnormal

A 80-year-old female patient (weight: NA) from COUNTRY NOT SPECIFIED with the following symptoms: urinary tract infection started Cephalexin treatment (dosage: NA) on Jul 25, 2013. Soon after starting Cephalexin treatment, the consumer experienced several side effects, including:
  • Headache
  • Agitation
  • Confusional State
  • Dizziness
  • Somnolence
  • Lethargy
  • Pneumonia
  • Nervous System Disorder
  • Csf Lymphocyte Count Abnormal
. Concurrently used drugs:
  • Bisoprolol (no Pref. Name)
  • Warfarin (no Pref. Name)
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Cephalexin side effects, such as Somnolence.
Agitation, Mania, Rash Pruritic, Erythema, Somnolence, Rash Papular

A patient from US was prescribed and started Cephalexin on Nov 08, 2012. Patient felt the following Cephalexin side effects: agitation, mania, rash pruritic, erythema, somnolence, rash papular Additional patient health information: male , 42 years of age, weighting 216.9 lb, The consumer reported the following symptoms: . Cephalexin dosage: 500 Mg Bid Po. Concurrently used drugs: NA. The patient was hospitalized.
Nervousness, Ill-defined Disorder, Impaired Driving Ability, Somnolence, Withdrawal Syndrome, Abdominal Discomfort, Dyskinesia

This report suggests a potential Cephalexin Somnolence side effect(s) that can have serious consequences. A 78-year-old patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): wound secretion,infection prophylaxis and used Cephalexin (dosage: 1) starting Aug 29, 2011. Soon after starting Cephalexin the patient began experiencing various side effects, including:
  • Nervousness
  • Ill-defined Disorder
  • Impaired Driving Ability
  • Somnolence
  • Withdrawal Syndrome
  • Abdominal Discomfort
  • Dyskinesia
Drugs used concurrently:NA. Although Cephalexin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Somnolence, may still occur.
Impaired Driving Ability, Nervous System Disorder, Abdominal Discomfort, Nervousness, Somnolence, Feeling Abnormal

An adverse event was reported by a consumer or non-health professional on Sep 06, 2011 by a male taking Cephalexin (dosage: 1) was diagnosed with and. Location: UNITED STATES , 78 years of age, weighting 195.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: impaired driving ability, nervous system disorder, abdominal discomfort, nervousness, somnolence, feeling abnormal. Additional medications/treatments:
Alopecia, Dyspnoea, Fatigue, Somnolence, Vulvovaginal Burning Sensation, Vulvovaginal Pruritus

This Somnolence problem was reported by a consumer or non-health professional from UNITED STATES. A 78-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): arthritis infective.On Aug 11, 2009 a consumer started treatment with Cephalexin (dosage: One Capsule 4x Daily). The following drugs/medications were being taken at the same time: NA. When commencing Cephalexin, the patient experienced the following unwanted symptoms /side effects:
  • Alopecia
  • Dyspnoea
  • Fatigue
  • Somnolence
  • Vulvovaginal Burning Sensation
  • Vulvovaginal Pruritus
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Somnolence, may become evident only after a product is in use by the general population.
Haemolytic Anaemia, Mental Status Changes, Peritoneal Dialysis, Rash Maculo-papular, Renal Failure Acute, Renal Tubular Necrosis, Skin Infection, Somnolence

This is a Cephalexin side effect report of a 10-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: abscess and was treated with Cephalexin (dosage: 250 Mg;qid;po) starting NS. Concurrently used drugs:
  • Ceftriaxone (1 Gm;bid;iv, X1;iv)
Soon after that, the consumer experienced the following of symptoms:
  • Haemolytic Anaemia
  • Mental Status Changes
  • Peritoneal Dialysis
  • Rash Maculo-papular
  • Renal Failure Acute
  • Renal Tubular Necrosis
  • Skin Infection
  • Somnolence
The patient was hospitalized. This opens a possibility that Cephalexin could cause Somnolence and that some patients may be more susceptible.
Delirium, Disorientation, Dizziness, Dysstasia, Pyrexia, Scratch, Somnolence, Speech Disorder, Tremor

This Somnolence side effect was reported by a consumer or non-health professional from UNITED STATES on Feb 14, 2008. A patient from UNITED STATES , child 6 years of age, weighting 44.00 lb, was diagnosed with and was treated with Cephalexin. Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: delirium, disorientation, dizziness, dysstasia, pyrexia, scratch, somnolence, speech disorder, tremor. Cephalexin dosage: 1 And 1/4 Tsp 3xday Po. These side effects may potentially be related to Cephalexin.
Confusional State, Somnolence

This Somnolence side effect was reported by a consumer or non-health professional from UNITED STATES. A 78-year-old patient (weight:NA) experienced the following symptoms/conditions: bladder neoplasm surgery,nephrolithiasis. The patient was prescribed Cephalexin (dosage: 1 Capsule 4 X Per Day Po), which was started on NS. Concurrently used drugs: NA. When starting to take Cephalexin the consumer reported the following symptoms:
  • Confusional State
  • Somnolence
These side effects may potentially be related to Cephalexin.

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

Cephalexin Somnolence Causes and Reviews


We are sorry, but no medical information on this topic currently exists in our database. Our articles are updated often, please revisit soon.


Cephalexin Somnolence 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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