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Metronidazole Diarrhoea Side Effects

Metronidazole Diarrhoea Side Effect Reports


The following Metronidazole Diarrhoea side effect reports were submitted by healthcare professionals and consumers.

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

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



Diarrhoea, Nausea, Headache, Depression, Frequent Bowel Movements, Dehydration, Dysstasia, Asthenia, Dizziness

This Diarrhoea side effect was reported by a consumer or non-health professional from US. A 65-year-old patient (weight:NA) experienced the following symptoms/conditions: haemorrhoid operation,prophylaxis. The patient was prescribed Metronidazole (dosage: 1 Pill Twice Daily Taken By Mouth), which was started on Feb 13, 2014. Concurrently used drugs: NA. When starting to take Metronidazole the consumer reported the following symptoms:
  • Diarrhoea
  • Nausea
  • Headache
  • Depression
  • Frequent Bowel Movements
  • Dehydration
  • Dysstasia
  • Asthenia
  • Dizziness
These side effects may potentially be related to Metronidazole.
Pharyngeal Oedema, Swollen Tongue, Dyspnoea, Vomiting, Diarrhoea, Proctalgia, Abdominal Pain Lower

This Diarrhoea Metronidazole side effect was reported by a health professional from GB on Feb 12, 2014. A Female , 47 years of age, was diagnosed with and was treated with Metronidazole. The patient presented the following health conditions:
  • Pharyngeal Oedema
  • Swollen Tongue
  • Dyspnoea
  • Vomiting
  • Diarrhoea
  • Proctalgia
  • Abdominal Pain Lower
. Metronidazole dosage: NA. Additional drugs used at the same time: NA. The patient was hospitalized.
Dyspnoea, Diarrhoea, Abdominal Pain Lower, Proctalgia, Pharyngeal Oedema, Swollen Tongue, Vomiting

This is a Metronidazole 500 Mg / 100 Ml Intravenous Infusion side effect report of a 47-year-old female patient (weight:NA) from GB, suffering from the following symptoms/conditions: infection,back pain,off label use, who was treated with Metronidazole 500 Mg / 100 Ml Intravenous Infusion (dosage:NA, start time: Jan 21, 2014), combined with: NA., and developed a serious reaction and a Diarrhoea side effect. The patient presented with:
  • Dyspnoea
  • Diarrhoea
  • Abdominal Pain Lower
  • Proctalgia
  • Pharyngeal Oedema
  • Swollen Tongue
  • Vomiting
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Metronidazole 500 Mg / 100 Ml Intravenous Infusion treatment in female patients suffering from infection,back pain,off label use, resulting in Diarrhoea.

Proctalgia, Pharyngeal Oedema, Swollen Tongue, Dyspnoea, Vomiting, Diarrhoea, Abdominal Pain Lower

A 47-year-old female patient (weight: NA) from GB with the following symptoms: back pain started Metronidazole treatment (dosage: 400 Mg, Only 1 Dose Taken) on Jan 21, 2014. Soon after starting Metronidazole treatment, the consumer experienced several side effects, including:
  • Proctalgia
  • Pharyngeal Oedema
  • Swollen Tongue
  • Dyspnoea
  • Vomiting
  • Diarrhoea
  • Abdominal Pain Lower
. Concurrently used drugs: NA.The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Metronidazole side effects, such as Diarrhoea.
Vomiting, Diarrhoea, Pyrexia, Agranulocytosis, Thrombocytopenia

A female patient from FR was prescribed and started Metronidazole on Dec 26, 2013. Patient felt the following Metronidazole side effects: vomiting, diarrhoea, pyrexia, agranulocytosis, thrombocytopenia Additional patient health information: Female , 80 years of age, The consumer reported the following symptoms: was diagnosed with and. Metronidazole dosage: NA. Concurrently used drugs:
  • Targocid
  • Amikacin
  • Ceftriaxone
  • Eupantol
  • Lasilix(furosemide)(furosemide)
  • Tardyperon(ferrous Sulfate)(ferrous Sulfate)
  • Ceris(trospium Chloride)(trospim Chloride)
  • Doliprane(paracetamol)(paracetamol)
Osteomyelitis Bacterial, Clostridium Difficile Infection, Haematochezia, Diarrhoea, Large Intestine Polyp, Refusal Of Treatment By Patient

This report suggests a potential Metronidazole Diarrhoea side effect(s) that can have serious consequences. A 76-year-old patient from US (weight:NA) was diagnosed with the following health condition(s): osteomyelitis bacterial and used Metronidazole (dosage: 500 Mg, 3 In 1 D, Oral) starting NS. Soon after starting Metronidazole the patient began experiencing various side effects, including:
  • Osteomyelitis Bacterial
  • Clostridium Difficile Infection
  • Haematochezia
  • Diarrhoea
  • Large Intestine Polyp
  • Refusal Of Treatment By Patient
Drugs used concurrently:
  • Piperacillin/tazobactam (pip/tazo) (piperacillin Sodium, Tazobactam Sodium) (3.375 Gm, 4 In 1 D, Intravenous)
  • Levofloxacin
  • Meropenem (meropenem) (1 Gm, 3 In 1 D, Intravenous (not Otherwise Specified))
  • Methotrexate (methotrexate) (60 Unit, Weekly, Subcutaneous)
  • Vancomycin (1 Gm, 2 In 1 D,)
  • Celecoxib
  • Hydroxychloroquine (hydroxychloroquine Sulfate)
  • Folic Acid (folic Acid)
The patient was hospitalized. Although Metronidazole demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Diarrhoea, may still occur.
Circulatory Collapse, Confusional State, Diarrhoea, Dizziness, Dysarthria, Pyrexia, Mouth Ulceration, Night Sweats, Paraesthesia

An adverse event was reported by a health professional on Oct 15, 2013 by a male taking Metronidazole (dosage: Bd/1 D, Od/1 D) was diagnosed with and. Location: GB , 41 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Metronidazole side effects: circulatory collapse, confusional state, diarrhoea, dizziness, dysarthria, pyrexia, mouth ulceration, night sweats, paraesthesia. Additional medications/treatments:
Joint Swelling, Vomiting, Diarrhoea

This Diarrhoea problem was reported by a physician from GB. A 49-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Aug 02, 2013 a consumer started treatment with Metronidazole (metronidazole) (metronidazole) (dosage: NA). The following drugs/medications were being taken at the same time:
  • Nexplanon (etonogestrel) (etonogestrel)
  • Amoxicillin (amoxicillin) (amoxicillin)
  • Benzydamine Hydrochloride (benzydamine Hydrochloride) (benzydamine Hydrochloride)
When commencing Metronidazole (metronidazole) (metronidazole), the patient experienced the following unwanted symptoms /side effects:
  • Joint Swelling
  • Vomiting
  • Diarrhoea
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Diarrhoea, may become evident only after a product is in use by the general population.
Diarrhoea, Joint Swelling, Vomiting

This is a Metronidazole 500 Mg / 100 Ml Intravenous Infusion side effect report of a 49-year-old female patient (weight: NA) from GB. The patient developed the following symptoms/conditions: NA and was treated with Metronidazole 500 Mg / 100 Ml Intravenous Infusion (dosage: NA) starting Jul 26, 2013. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Diarrhoea
  • Joint Swelling
  • Vomiting
This opens a possibility that Metronidazole 500 Mg / 100 Ml Intravenous Infusion could cause Diarrhoea and that some female patients may be more susceptible.
Joint Swelling, Vomiting, Diarrhoea

This Diarrhoea side effect was reported by a physician from GB on Aug 28, 2013. A female patient from GB , 49 years of age, weighting 146.6 lb, was treated with Metronidazole. Directly after treatment started, patient experienced the unwanted or unexpected Metronidazole side effects: joint swelling, vomiting, diarrhoea. Metronidazole dosage: NA. These side effects may potentially be related to Metronidazole.
Joint Swelling, Vomiting, Diarrhoea

This Diarrhoea side effect was reported by a physician from GB. A 49-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Metronidazole (dosage: Unk), which was started on May 13, 2013. Concurrently used drugs: NA. When starting to take Metronidazole the consumer reported the following symptoms:
  • Joint Swelling
  • Vomiting
  • Diarrhoea
These side effects may potentially be related to Metronidazole.
Joint Swelling, Vomiting, Diarrhoea

This Diarrhoea Metronidazole side effect was reported by a health professional from GB on Aug 24, 2013. A Female , 49 years of age, weighting 146.6 lb, was treated with Metronidazole. The patient presented the following health conditions:
  • Joint Swelling
  • Vomiting
  • Diarrhoea
. Metronidazole dosage: Unk. Additional drugs used at the same time:
  • Nexplanon (68 Mg, Unk)
  • Amoxicillin
  • Benzydamine Hydrochloride
Dry Mouth, Abdominal Pain Upper, Diarrhoea, Headache, Dizziness, Chills, Migraine, Pyrexia

This is a Metronidazole side effect report of a female patient (weight:NA) from US, suffering from the following symptoms/conditions: vaginal infection, who was treated with Metronidazole (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Diarrhoea side effect. The patient presented with:
  • Dry Mouth
  • Abdominal Pain Upper
  • Diarrhoea
  • Headache
  • Dizziness
  • Chills
  • Migraine
  • Pyrexia
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Metronidazole treatment in female patients suffering from vaginal infection, resulting in Diarrhoea.
Clostridium Difficile Infection, Diarrhoea

A 74-year-old patient (weight: NA) from GB with the following symptoms: aspiration,meningitis meningococcal started Metronidazole 500 Mg / 100 Ml Intravenous Infusion treatment (dosage: NA) on Jun 01, 2009. Soon after starting Metronidazole 500 Mg / 100 Ml Intravenous Infusion treatment, the consumer experienced several side effects, including:
  • Clostridium Difficile Infection
  • Diarrhoea
. Concurrently used drugs:
  • Ceftriaxone
  • Flucloxacillin
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Metronidazole 500 Mg / 100 Ml Intravenous Infusion side effects, such as Diarrhoea.
Gastroenteritis Eosinophilic, Diarrhoea, Abdominal Pain, Vomiting, Eosinophilia

A patient from CZ was prescribed and started Metronidazole on Jul 11, 2013. After Metronidazole was administered, patient encountered several Metronidazole side effects: gastroenteritis eosinophilic, diarrhoea, abdominal pain, vomiting, eosinophilia Additional patient health information: male , 77 years of age, The consumer reported the following symptoms: was diagnosed with and. Metronidazole dosage: NA. Concurrently used drugs: NA. The patient was hospitalized.
Cerebellar Ataxia, Convulsion, Neuropathy Peripheral, Grand Mal Convulsion, Clumsiness, Cerebellar Syndrome, Acute Disseminated Encephalomyelitis, Diarrhoea

This report suggests a potential Metronidazole Diarrhoea side effect(s) that can have serious consequences. A 31-year-old patient from IN (weight:NA) was diagnosed with the following health condition(s): hepatic amoebiasis and used Metronidazole (dosage: NA) starting 201109. Soon after starting Metronidazole the patient began experiencing various side effects, including:
  • Cerebellar Ataxia
  • Convulsion
  • Neuropathy Peripheral
  • Grand Mal Convulsion
  • Clumsiness
  • Cerebellar Syndrome
  • Acute Disseminated Encephalomyelitis
  • Diarrhoea
Drugs used concurrently:
  • Ornidazole (ornidazole) (ornidazole)
  • Diloxanide Furoate (diloxanide Furoate) (diloxanide Furoate)
The patient was hospitalized. Although Metronidazole demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Diarrhoea, may still occur.
Influenza Like Illness, Diarrhoea

An adverse event was reported by a health professional on Jun 19, 2013 by a Female taking Metronidazole (dosage: NA) was diagnosed with and. Location: GB , 33 years of age, patient began experiencing various side effects, including: Patient felt the following Metronidazole side effects: influenza like illness, diarrhoea. Additional medications/treatments:
Multiple prescriptions taken:
  • Atripla(atripla)(emtricitabine, Efavirenz, Tenofovir Disoproxil Fumarate)
  • Septrin(bactrim)(sulfamethoxazole, Trimethoprim)
  • Venlafaxine(venlafaxine)(venlafaxine)
  • Adcal-d3(lekovit Ca)(colecalciferol, Calcium Carbonate)
Diarrhoea, Influenza Like Illness

This Diarrhoea problem was reported by a consumer or non-health professional from GB. A 33-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): vaginitis bacterial.On May 20, 2013 a consumer started treatment with Metronidazole (dosage: I Had Taken 10 Of 14 Tablets.). The following drugs/medications were being taken at the same time:
  • Atripla
  • Septrin
  • Venlafaxine
  • Adcal-d3
When commencing Metronidazole, the patient experienced the following unwanted symptoms /side effects:
  • Diarrhoea
  • Influenza Like Illness
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Diarrhoea, may become evident only after a product is in use by the general population.
Influenza Like Illness, Diarrhoea

This is a Metronidazole side effect report of a 33-year-old female patient (weight: NA) from GB. The patient developed the following symptoms/conditions: vaginitis bacterial and was treated with Metronidazole (dosage: NA) starting May 20, 2013. Concurrently used drugs:
  • Atripla
  • Septrin
  • Venlafaxine
  • Adcal-d3
Soon after that, the consumer experienced the following of symptoms:
  • Influenza Like Illness
  • Diarrhoea
This opens a possibility that Metronidazole could cause Diarrhoea and that some female patients may be more susceptible.
Treatment Failure, Diarrhoea, Pyrexia

This Diarrhoea side effect was reported by a physician from GB on Jan 22, 2013. A patient from GB , 68 years of age, was diagnosed with and was treated with Metronidazole. Patient felt the following Metronidazole side effects: treatment failure, diarrhoea, pyrexia. Metronidazole dosage: (}21 Days), 8 Hourly.
Multiple prescriptions taken:
  • Lenalidomide
  • Dexamethasone
The patient was hospitalized. These side effects may potentially be related to Metronidazole.
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DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Metronidazole Diarrhoea Causes and Reviews


What is diarrhea?

Diarrhea is loose, watery stools (bowel movements). You have diarrhea if you have loose stools three or more times in one day. Acute diarrhea is diarrhea that lasts a short time. It is a common problem. It usually lasts about one or two days, but it may last longer. Then it goes away on its own.

Diarrhea lasting more than a few days may be a sign of a more serious problem. Chronic diarrhea -- diarrhea that lasts at least four weeks -- can be a symptom of a chronic disease. Chronic diarrhea symptoms may be continual, or they may come and go.

Who gets diarrhea?

People of all ages can get diarrhea. On average, adults In the United States have acute diarrhea once a year. Young children have it an average of twice a year.

People who visit developing countries are at risk for traveler's diarrhea. It is caused by consuming contaminated food or water.

What causes diarrhea?

The most common causes of diarrhea include

  • Bacteria from contaminated food or water
  • Viruses such as the flu, norovirus, or rotavirus . Rotavirus is the most common cause of acute diarrhea in children.
  • Parasites, which are tiny organisms found in contaminated food or water
  • Medicines such as antibiotics, cancer drugs, and antacids that contain magnesium
  • Food intolerances and sensitivities, which are problems digesting certain ingredients or foods. An example is lactose intolerance.
  • Diseases that affect the stomach, small intestine, or colon, such as Crohn's disease
  • Problems with how the colon functions, such as irritable bowel syndrome

Some people also get diarrhea after stomach surgery, because sometimes the surgeries can cause food to move through your digestive system more quickly.

Sometimes no cause can be found. If your diarrhea goes away within a few days, finding the cause is usually not necessary.

What other symptoms might I have with diarrhea?

Other possible symptoms of diarrhea include

  • Cramps or pain in the abdomen
  • An urgent need to use the bathroom
  • Loss of bowel control

If a virus or bacteria is the cause of your diarrhea, you may also have a fever, chills, and bloody stools.

Diarrhea can cause dehydration, which means that your body does not have enough fluid to work properly. Dehydration can be serious, especially for children, older adults, and people with weakened immune systems.

When should I see a doctor for diarrhea?

Although it is usually not harmful, diarrhea can become dangerous or signal a more serious problem. Contact your health care provider if you have

  • Signs of dehydration
  • Diarrhea for more than 2 days, if you are an adult. For children, contact the provider if it lasts more than 24 hours.
  • Severe pain in your abdomen or rectum (for adults)
  • A fever of 102 degrees or higher
  • Stools containing blood or pus
  • Stools that are black and tarry

If children have diarrhea, parents or caregivers should not hesitate to call a health care provider. Diarrhea can be especially dangerous in newborns and infants.

How is the cause of diarrhea diagnosed?

To find the cause of diarrhea, your health care provider may

  • Do a physical exam
  • Ask about any medicines you are taking
  • Test your stool or blood to look for bacteria, parasites, or other signs of disease or infection
  • Ask you to stop eating certain foods to see whether your diarrhea goes away

If you have chronic diarrhea, your health care provider may perform other tests to look for signs of disease.

What are the treatments for diarrhea?

Diarrhea is treated by replacing lost fluids and electrolytes to prevent dehydration. Depending on the cause of the problem, you may need medicines to stop the diarrhea or treat an infection.

Adults with diarrhea should drink water, fruit juices, sports drinks, sodas without caffeine, and salty broths. As your symptoms improve, you can eat soft, bland food.

Children with diarrhea should be given oral rehydration solutions to replace lost fluids and electrolytes.

Can diarrhea be prevented?

Two types of diarrhea can be prevented - rotavirus diarrhea and traveler's diarrhea. There are vaccines for rotavirus. They are given to babies in two or three doses.

You can help prevent traveler's diarrhea by being careful about what you eat and drink when you are in developing countries:

  • Use only bottled or purified water for drinking, making ice cubes, and brushing your teeth
  • If you do use tap water, boil it or use iodine tablets
  • Make sure that the cooked food you eat is fully cooked and served hot
  • Avoid unwashed or unpeeled raw fruits and vegetables

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


Metronidazole Diarrhoea Reviews

Sat, 19 May 2012

I had this wierd taste in my mouth when I ate. It made everything taste expired, even flavored water.

Wed, 23 May 2012

how you can forestall Morning illness throughout being pregnant is a thriller widespread in pregnant girls.  Nausea happens as one among the early indicators of being pregnant. 

Thu, 09 Feb 2012

Started four doses of 500 mg 3x/day, then shifted to iv metro in the hospital, then 2 more doses at home. I feel dizzy and lightheaded. It's been less than two days since i stopped it, i still have a bit of dizziness and lightheadedness. I wonder how many days will this dizziness persist?

Sat, 26 May 2012

If a harmful invader sets up camp somewhere on your body, the immune system mounts a defense by sending white blood cells, the body's main infection-fighting cells, into the area.

Sat, 09 Apr 2011

Describe Your Metronidazole Experience Here: after taking a total of 4 pills, 1 first day 2 second day and 1 in third day. I had symptoms begin on that second day. There was tingling in my lips with burning in my lips and tongue. The next day they look swollen. My ear was all congested, around opening of nose it burns and I have nasal congestion and runny. My eye lid swelled up and I have a confirmed bacterial infection in eye.(may be related to meds) eye dr wouldn't say. Doctor who out me on meds told me not to take anymore, so I'm waiting for these symptoms to go away. How long after meds are stopped will symptoms go away? I've had alot of symptoms some common some not so.

Mon, 12 Jan 2009
prescribed Metronidazole for tooth complaint after one day felt dizzy, day two pins and needles and numbness in arms and day three severe abdominal pains.taken to hospital then transfered to emergency care unit. after six hours of tests it appeared to be a severe reaction to Metronidazole.i will never use this drug again.
Sun, 15 Feb 2009
I am deeply indebted to Danny Smith with his comments about Metronidazole. I was also prescribed Metronidazole for a tooth complaint and after experiencing dizziness and being very unwell with nausea, happened to find his remarks on the net. After taking each tablet my symptoms increased and finally searched the net for some information. I immediately stopped my medication and alerted my Dr who has prescribed anti nausea pills and amoxycillin which have settled my symptoms and the infection has reduced in anticipation of root canals to be performed in a couple of days.
Tue, 19 May 2009
Was prescribed Flagyl and also had sever reaction to drug. After two days hand numb and tingly, day three I could hardly walk, my mind was in a fog and I couldn't think. Completely surpressed my appetite and gave me terrible anxiety.
Mon, 25 Jan 2010
Can I take Flagyl for a UTI?
Thu, 11 Feb 2010
Diagnosed with BV and started taking Flagyl orally twice per day for 7 days. In the 4th day of my treatment my period started. Had very heavy flow. No cramps but very heavy menstrual bleeding and passed large blood clots. Very worried.
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Metronidazole Side Effects

Dysarthria (124)
Dizziness (124)
Vomiting (119)
Nausea (108)
Encephalopathy (106)
Diarrhoea (102)
Paraesthesia (93)
Headache (88)
Confusional State (80)
Ataxia (80)
Toxic Encephalopathy (71)
Pruritus (67)
Gait Disturbance (62)
Neuropathy Peripheral (60)
Pain (60)
Pyrexia (58)
Cerebellar Syndrome (58)
Rash (56)
Urticaria (51)
Malaise (49)
Neurotoxicity (44)
Anaphylactic Reaction (44)
Abdominal Pain (43)
Dyspnoea (42)
Anxiety (41)
Dysgeusia (41)
International Normalised Ratio Increased (39)
Asthenia (38)
Hypoaesthesia (37)
Fatigue (37)
Convulsion (34)
Somnolence (34)
Nuclear Magnetic Resonance Imaging Brain Abnormal (32)
Pain In Extremity (31)
Coordination Abnormal (31)
Arthralgia (31)
Abdominal Pain Upper (30)
Balance Disorder (30)
Clostridium Difficile Colitis (30)
Depression (30)
Chest Pain (30)
Cerebellar Ataxia (29)
Insomnia (28)
Dysphagia (27)
Condition Aggravated (27)
Feeling Abnormal (27)
Psychotic Disorder (27)
Nystagmus (26)
Liver Function Test Abnormal (26)
Muscular Weakness (25)

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