Cephalexin Dehydration Side Effect Reports


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

This information will help you understand how side effects, such as Dehydration, 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, Dehydration, Abdominal Pain, Weight Decreased, Back Pain, Muscle Spasms, Vomiting

This Dehydration side effect was reported by a consumer or non-health professional from UNITED STATES. A 47-year-old patient (weight:NA) experienced the following symptoms/conditions: bronchitis. The patient was prescribed Cephalexin (dosage: NA), which was started on NS. Concurrently used drugs: NA. When starting to take Cephalexin the consumer reported the following symptoms:
  • Diarrhoea
  • Dehydration
  • Abdominal Pain
  • Weight Decreased
  • Back Pain
  • Muscle Spasms
  • Vomiting
The patient was hospitalized. These side effects may potentially be related to Cephalexin.
Dehydration, Clostridium Difficile Colitis, Faeces Discoloured

This Dehydration Cephalexin side effect was reported by a consumer or non-health professional from UNITED STATES on May 05, 2011. A Female , 43 years of age, weighting 215.0 lb, was treated with Cephalexin. The patient presented the following health conditions:
  • Dehydration
  • Clostridium Difficile Colitis
  • Faeces Discoloured
. Cephalexin dosage: NA. Additional drugs used at the same time: NA.
Dehydration, Vomiting, Palpitations, Diarrhoea, Chest Pain, Hallucination, Malaise

This is a Cephalexin side effect report of a 4-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: streptococcal infection, who was treated with Cephalexin (dosage:NA, start time: May 27, 2010), combined with: NA., and developed a serious reaction and a Dehydration side effect. The patient presented with:
  • Dehydration
  • Vomiting
  • Palpitations
  • Diarrhoea
  • Chest Pain
  • Hallucination
  • Malaise
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 female patients suffering from streptococcal infection, resulting in Dehydration.
Rash, Dehydration, Blood Pressure Decreased, Enterocolitis Infectious, Vomiting, Loss Of Consciousness

A 76-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: enterocolitis infectious started Cephalexin treatment (dosage: 500 Mg) on Dec 19, 2010. Soon after starting Cephalexin treatment, the consumer experienced several side effects, including:
  • Rash
  • Dehydration
  • Blood Pressure Decreased
  • Enterocolitis Infectious
  • Vomiting
  • Loss Of Consciousness
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Cephalexin side effects, such as Dehydration.
Septic Shock, Urinary Tract Infection, Neutropenia, Dehydration, Mucosal Inflammation, Respiratory Failure, Pneumonia

A patient from UNITED STATES was prescribed and started Cephalexin on Feb 15, 2011. Patient felt the following Cephalexin side effects: septic shock, urinary tract infection, neutropenia, dehydration, mucosal inflammation, respiratory failure, pneumonia Additional patient health information: male , 71 years of age, The consumer reported the following symptoms: was diagnosed with
  • phlebitis
  • cellulitis
  • chronic obstructive pulmonary disease
  • non-small cell lung cancer
  • mucosal inflammation
  • prophylaxis of nausea and vomiting
and. Cephalexin dosage: NA. Concurrently used drugs: NA. The patient was hospitalized.
Clostridium Test Positive, Dehydration, Diarrhoea, Hypophagia, Hypotension, Renal Failure Acute

This report suggests a potential Cephalexin Dehydration side effect(s) that can have serious consequences. A 84-year-old patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): cellulitis and used Cephalexin (dosage: 500 Mg Qid Po) starting Jul 29, 2009. Soon after starting Cephalexin the patient began experiencing various side effects, including:
  • Clostridium Test Positive
  • Dehydration
  • Diarrhoea
  • Hypophagia
  • Hypotension
  • Renal Failure Acute
Drugs used concurrently:NA. The patient was hospitalized. Although Cephalexin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Dehydration, may still occur.
Abdominal Distension, Abdominal Pain Upper, Asthenia, Dehydration, Jaundice, Pruritus, Tremor, Vomiting, Weight Decreased

An adverse event was reported by a consumer or non-health professional on Feb 02, 2010 by a male taking Cephalexin (dosage: 2 Capsules Every 8 Hrs. Mouth) was diagnosed with and. Location: UNITED STATES , 74 years of age, weighting 141.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: abdominal distension, abdominal pain upper, asthenia, dehydration, jaundice, pruritus, tremor, vomiting, weight decreased. Additional medications/treatments: The patient was hospitalized.
Cellulitis, Clostridial Infection, Culture Stool Positive, Dehydration, Hyperkeratosis

This Dehydration problem was reported by a physician from UNITED STATES. A 80-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): cellulitis,rheumatoid arthritis.On Feb 01, 2008 a consumer started treatment with Cephalexin (dosage: Po). The following drugs/medications were being taken at the same time:
  • Humira (40 Mg; Qw; Sc)
  • Alendronate Sodium
  • Amlodipine Maleate
  • Celecoxib
  • Folic Acid
  • Methotrexate
  • Prednisone
  • Triamterene
When commencing Cephalexin, the patient experienced the following unwanted symptoms /side effects:
  • Cellulitis
  • Clostridial Infection
  • Culture Stool Positive
  • Dehydration
  • Hyperkeratosis
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 Dehydration, may become evident only after a product is in use by the general population.
Abdominal Pain, Blood Sodium Decreased, Brain Herniation, Brain Oedema, Bronchopneumonia, Convulsion, Dehydration, Encephalitis

This is a Cephalexin side effect report of a 6-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: cat scratch disease and was treated with Cephalexin (dosage: NA) starting NS. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Abdominal Pain
  • Blood Sodium Decreased
  • Brain Herniation
  • Brain Oedema
  • Bronchopneumonia
  • Convulsion
  • Dehydration
  • Encephalitis
The patient was hospitalized. This opens a possibility that Cephalexin could cause Dehydration and that some patients may be more susceptible.
Dehydration, Diarrhoea

This Dehydration side effect was reported by a consumer or non-health professional from UNITED STATES on Nov 30, 2007. A female patient from UNITED STATES , 68 years of age, was diagnosed with and was treated with Cephalexin. Directly after treatment started, patient experienced the unwanted or unexpected Cephalexin side effects: dehydration, diarrhoea. Cephalexin dosage: 500 Mg; Qid.
Associated medications used:
  • Probiotic
These side effects may potentially be related to Cephalexin.
Dehydration, Haemolytic Anaemia, Renal Tubular Necrosis

This Dehydration side effect was reported by a health professional from UNITED KINGDOM. A 14-year-old female patient (weight:NA) experienced the following symptoms/conditions: urinary tract infection. The patient was prescribed Cephalexin (dosage: 250 Mg, Oral), which was started on Mar 20, 2007. Concurrently used drugs:
  • Trimethoprim
When starting to take Cephalexin the consumer reported the following symptoms:
  • Dehydration
  • Haemolytic Anaemia
  • Renal Tubular Necrosis
The patient was hospitalized. These side effects may potentially be related to Cephalexin.
Dehydration, Haemolytic Anaemia, Renal Tubular Necrosis

This Dehydration Cephalexin side effect was reported by a consumer or non-health professional from UNITED KINGDOM on Apr 20, 2007. A Female , 14 years of age, weighting 121.3 lb, was diagnosed with and was treated with Cephalexin. The patient presented the following health conditions:
  • Dehydration
  • Haemolytic Anaemia
  • Renal Tubular Necrosis
. Cephalexin dosage: 250 Mg; Po. Additional drugs used at the same time:
  • Trimethoprim
The patient was hospitalized.
Dehydration, Haemolytic Anaemia, Renal Tubular Necrosis

This is a Cephalexin side effect report of a 14-year-old female patient (weight:NA) from UNITED KINGDOM, suffering from the following symptoms/conditions: NA, who was treated with Cephalexin (dosage:(250 Mg), start time: Mar 20, 2007), combined with: NA., and developed a serious reaction and a Dehydration side effect. The patient presented with:
  • Dehydration
  • Haemolytic Anaemia
  • Renal Tubular Necrosis
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 female patients suffering from NA, resulting in Dehydration.
Abdominal Pain, Dehydration, Diarrhoea, Pyrexia, Viral Infection

A 70-year-old patient (weight: NA) from UNITED STATES with the following symptoms: chronic obstructive pulmonary disease started Cephalexin treatment (dosage: 500 Mg Q6h Po) on Apr 15, 2006. Soon after starting Cephalexin treatment, the consumer experienced several side effects, including:
  • Abdominal Pain
  • Dehydration
  • Diarrhoea
  • Pyrexia
  • Viral Infection
. Concurrently used drugs:
  • Zithromax (250 Mg Q Day Po)
  • Atenolol
  • Felodipine
  • Sunvastatub
  • Omeprazole
  • Pentoxifylline
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Cephalexin side effects, such as Dehydration.

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

Cephalexin Dehydration Causes and Reviews


When you're dehydrated, your body doesn't have enough fluid and electrolytes to work properly. An average person on an average day needs about 3 quarts of water. But if you're out in the hot sun or are exercising a lot, you need a lot more than that. You can also become dehydrated if you are vomiting, have diarrhea, or are sweating a lot. People who are elderly, very young, taking certain medications, or have a chronic illness have a greater risk.

Signs of Dehydration in adults include

  • Being thirsty
  • Urinating less often than usual
  • Dark-colored urine
  • Dry skin
  • Feeling tired
  • Dizziness and fainting

Signs of Dehydration in babies and young children include a dry mouth and tongue, crying without tears, no wet diapers for 3 hours or more, a high fever and being unusually sleepy or drowsy.

If you think you're dehydrated, drink small amounts of water over a period of time. Drinking too much all at once can overload your stomach and make you throw up. If you are exercising in the heat and losing a lot of minerals in sweat, sports drinks can be helpful. Avoid any drinks that have caffeine.

NIH: National Institutes of Health


Cephalexin Dehydration 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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