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Flagyl Insomnia Side Effects

Flagyl Insomnia Side Effect Reports


The following Flagyl Insomnia side effect reports were submitted by healthcare professionals and consumers.

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

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



Migraine, Hallucination, Mania, Psychotic Disorder, Insomnia, Decreased Appetite, Weight Decreased, Speech Disorder

This Insomnia side effect was reported by a consumer or non-health professional from US. A 32-year-old female patient (weight:NA) experienced the following symptoms/conditions: rectal stenosis. The patient was prescribed Flagyl (dosage: NA), which was started on May 15, 2013. Concurrently used drugs: NA. When starting to take Flagyl the consumer reported the following symptoms:
  • Migraine
  • Hallucination
  • Mania
  • Psychotic Disorder
  • Insomnia
  • Decreased Appetite
  • Weight Decreased
  • Speech Disorder
These side effects may potentially be related to Flagyl.
Pain, Crying, Chills, Tremor, Insomnia

This Insomnia Flagyl side effect was reported by a consumer or non-health professional from US on Jun 14, 2013. A Female , 84 years of age, was treated with Flagyl. The patient presented the following health conditions:
  • Pain
  • Crying
  • Chills
  • Tremor
  • Insomnia
. Flagyl dosage: Unk. Additional drugs used at the same time:
  • Levaquin (Unk)
Insomnia, Gait Disturbance, Dizziness

This is a Flagyl side effect report of a 42-year-old patient (weight:NA) from PT, suffering from the following symptoms/conditions: diarrhoea, who was treated with Flagyl (dosage:3 In 1 D, start time: Jan 24, 2013), combined with:
  • Imuran (azathioprine)(azathioprine)
  • Mesalazine (mesalaz Ine ) (mesalazine)
, and developed a serious reaction and a Insomnia side effect. The patient presented with:
  • Insomnia
  • Gait Disturbance
  • Dizziness
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Flagyl treatment in patients suffering from diarrhoea, resulting in Insomnia.

Insomnia, Gait Disturbance, Dizziness

A 42-year-old patient (weight: NA) from PT with the following symptoms: diarrhoea started Flagyl/00012501/(flagyl-metronidazole) treatment (dosage: NA) on Jan 24, 2013. Soon after starting Flagyl/00012501/(flagyl-metronidazole) treatment, the consumer experienced several side effects, including:
  • Insomnia
  • Gait Disturbance
  • Dizziness
. Concurrently used drugs:
  • Imuran
  • Salofalk
This finding indicates that some patients can be more vulnerable to developing Flagyl/00012501/(flagyl-metronidazole) side effects, such as Insomnia.
Muscle Twitching, Dyspepsia, Visual Impairment, Headache, Photopsia, Formication, Insomnia, Tinnitus, Retching

A female patient from UNITED STATES was prescribed and started Flagyl on Oct 24, 2011. Patient felt the following Flagyl side effects: muscle twitching, dyspepsia, visual impairment, headache, photopsia, formication, insomnia, tinnitus, retching Additional patient health information: Female , 30 years of age, weighting 138.0 lb, The consumer reported the following symptoms: was diagnosed with and. Flagyl dosage: 500mg 2x Day Oral. Concurrently used drugs: NA.
Heart Rate Increased, Abdominal Discomfort, Nausea, Weight Decreased, Insomnia, Vision Blurred, Thinking Abnormal, Palpitations, Candidiasis

This report suggests a potential Flagyl Insomnia side effect(s) that can have serious consequences. A female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): vaginitis bacterial and used Flagyl (dosage: 500 Mg, 2x/day) starting May 25, 2011. Soon after starting Flagyl the patient began experiencing various side effects, including:
  • Heart Rate Increased
  • Abdominal Discomfort
  • Nausea
  • Weight Decreased
  • Insomnia
  • Vision Blurred
  • Thinking Abnormal
  • Palpitations
  • Candidiasis
Drugs used concurrently:NA. Although Flagyl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Insomnia, may still occur.
Candidiasis, Insomnia, Diarrhoea, Palpitations, Heart Rate Increased, Anxiety, Abdominal Discomfort, Blood Pressure Increased, Vision Blurred

An adverse event was reported by a consumer or non-health professional on Jun 09, 2011 by a Female taking Flagyl (dosage: 500 Mg, 2x/day) was diagnosed with and. Location: UNITED STATES , weighting 141.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Flagyl side effects: candidiasis, insomnia, diarrhoea, palpitations, heart rate increased, anxiety, abdominal discomfort, blood pressure increased, vision blurred. Additional medications/treatments:
Feeling Of Body Temperature Change, Frequent Bowel Movements, Hyperhidrosis, Vomiting, Asthenia, Dysgeusia, Insomnia, Crohn's Disease

This Insomnia problem was reported by a consumer or non-health professional from CANADA. A female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Nov 27, 2008 a consumer started treatment with Flagyl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Ensure
  • Calcium Carbonate
  • Accupril
  • Prednisone
  • Valtrex
  • Folic Acid
  • Humira
  • Vitamin D
When commencing Flagyl, the patient experienced the following unwanted symptoms /side effects:
  • Feeling Of Body Temperature Change
  • Frequent Bowel Movements
  • Hyperhidrosis
  • Vomiting
  • Asthenia
  • Dysgeusia
  • Insomnia
  • Crohn's Disease
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 Insomnia, may become evident only after a product is in use by the general population.
Injection Site Swelling, Insomnia, Myalgia

This is a Flagyl side effect report of a female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Flagyl (dosage: NA) starting Dec 22, 2010. Concurrently used drugs:
  • Cimzia ((400 Mg 1x/2 Weeks Subcutaneous))
  • Bactrim
Soon after that, the consumer experienced the following of symptoms:
  • Injection Site Swelling
  • Insomnia
  • Myalgia
This opens a possibility that Flagyl could cause Insomnia and that some female patients may be more susceptible.
Psychotic Disorder, Insomnia, Paranoia

This Insomnia side effect was reported by a physician from UNITED STATES on Mar 24, 2011. A female patient from UNITED STATES , 44 years of age, was diagnosed with and was treated with Flagyl. Directly after treatment started, patient experienced the unwanted or unexpected Flagyl side effects: psychotic disorder, insomnia, paranoia. Flagyl dosage: NA.
Associated medications used:
  • Levaquin
  • Ambien
  • Cogentin
  • Metronidazole
  • Ibuprofen
  • Advil Liqui-gels
The patient was hospitalized. These side effects may potentially be related to Flagyl.
Insomnia, Pain, Tinnitus

This Insomnia side effect was reported by a consumer or non-health professional from UNITED STATES. A patient (weight:NA) experienced the following symptoms/conditions: clostridial infection. The patient was prescribed Flagyl (dosage: 500 Mg 3 X Daily Oral), which was started on Mar 06, 2010. Concurrently used drugs: NA. When starting to take Flagyl the consumer reported the following symptoms:
  • Insomnia
  • Pain
  • Tinnitus
These side effects may potentially be related to Flagyl.
Arthralgia, Dysgeusia, Headache, Insomnia, Nausea, Paraesthesia

This Insomnia Flagyl side effect was reported by a consumer or non-health professional from UNITED STATES on Jan 04, 2008. A Female , weighting 130.3 lb, was diagnosed with and was treated with Flagyl. The patient presented the following health conditions:
  • Arthralgia
  • Dysgeusia
  • Headache
  • Insomnia
  • Nausea
  • Paraesthesia
. Flagyl dosage: NA. Additional drugs used at the same time:
  • Xalatan
  • Multi-vitamins
Ataxia, Blepharospasm, Blood Pressure Systolic Increased, Confusional State, Dyspnoea, Fibromyalgia, Insomnia, Multiple Sclerosis

This is a Flagyl side effect report of a 51-year-old female patient (weight:NA) from , suffering from the following symptoms/conditions: NA, who was treated with Flagyl (dosage:Unk, start time: Jan 01, 2006), combined with:
  • Neurontin (Unk)
  • Lyrica
  • Levaquin (Unk)
, and developed a serious reaction and a Insomnia side effect. The patient presented with:
  • Ataxia
  • Blepharospasm
  • Blood Pressure Systolic Increased
  • Confusional State
  • Dyspnoea
  • Fibromyalgia
  • Insomnia
  • Multiple Sclerosis
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Flagyl treatment in female patients suffering from NA, resulting in Insomnia.
Insomnia, Palpitations, Panic Reaction, Pyrexia, Tinnitus

A 48-year-old female patient (weight: NA) from with the following symptoms: NA started Flagyl treatment (dosage: Dose: 2 Tablets Daily) on Jan 30, 2007. Soon after starting Flagyl treatment, the consumer experienced several side effects, including:
  • Insomnia
  • Palpitations
  • Panic Reaction
  • Pyrexia
  • Tinnitus
. Concurrently used drugs:
  • Ciproxin /00697201/
This finding indicates that some patients can be more vulnerable to developing Flagyl side effects, such as Insomnia.
Agitation, Confusional State, Coordination Abnormal, Insomnia, Swollen Tongue

A patient from UNITED KINGDOM was prescribed and started Flagyl on Feb 06, 2007. After Flagyl was administered, patient encountered several Flagyl side effects: agitation, confusional state, coordination abnormal, insomnia, swollen tongue Additional patient health information: male , 25 years of age, The consumer reported the following symptoms: . Flagyl dosage: NA. Concurrently used drugs:
  • Lansoprazole (Dose: Unk)
  • Clarithromycin (Dose: Unk)
The patient was hospitalized.
Anxiety, Arthralgia, Blood Glucose Increased, Chest Pain, Condition Aggravated, Diarrhoea, Dyskinesia, Hypoaesthesia, Insomnia

This report suggests a potential Flagyl Insomnia side effect(s) that can have serious consequences. A 48-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): diverticulitis and used Flagyl (dosage: 500 Mg Bid Po) starting Oct 17, 2006. Soon after starting Flagyl the patient began experiencing various side effects, including:
  • Anxiety
  • Arthralgia
  • Blood Glucose Increased
  • Chest Pain
  • Condition Aggravated
  • Diarrhoea
  • Dyskinesia
  • Hypoaesthesia
  • Insomnia
Drugs used concurrently:NA. The patient was hospitalized. Although Flagyl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Insomnia, may still occur.
Abasia, Cognitive Disorder, Depression, Dizziness, Economic Problem, Fall, Insomnia, Irritability, Memory Impairment

An adverse event was reported by a consumer or non-health professional on Oct 10, 2005 by a Female taking Flagyl (dosage: (bid Interval: Every Day), Oral) was diagnosed with and. Location: UNITED STATES , 72 years of age, weighting 160.0 lb, patient began experiencing various side effects, including: Patient felt the following Flagyl side effects: abasia, cognitive disorder, depression, dizziness, economic problem, fall, insomnia, irritability, memory impairment. Additional medications/treatments: The patient was hospitalized.
Depression, Difficulty In Walking, Dizziness, Fall, Hypoaesthesia, Insomnia, Irritability, Memory Impairment, Neuropathy

This Insomnia problem was reported by a consumer or non-health professional from UNITED STATES. A 72-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): infection,liver disorder.On Sep 15, 2002 a consumer started treatment with Flagyl (dosage: (bid Interval: Every Day), Oral). The following drugs/medications were being taken at the same time: NA. When commencing Flagyl, the patient experienced the following unwanted symptoms /side effects:
  • Depression
  • Difficulty In Walking
  • Dizziness
  • Fall
  • Hypoaesthesia
  • Insomnia
  • Irritability
  • Memory Impairment
  • Neuropathy
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 Insomnia, may become evident only after a product is in use by the general population.
Depression, Difficulty In Walking, Dizziness, Fall, Hypoaesthesia, Insomnia, Irritability, Memory Impairment, Movement Disorder

This is a Flagyl side effect report of a 72-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: liver disorder and was treated with Flagyl (dosage: NA) starting Sep 15, 2002. Concurrently used drugs:
  • Amitriptyline Hcl
  • Hydrochlorothiazide
  • Estropipate
  • Diazepam
Soon after that, the consumer experienced the following of symptoms:
  • Depression
  • Difficulty In Walking
  • Dizziness
  • Fall
  • Hypoaesthesia
  • Insomnia
  • Irritability
  • Memory Impairment
  • Movement Disorder
The patient was hospitalized. This opens a possibility that Flagyl could cause Insomnia and that some female patients may be more susceptible.
Depression, Dizziness, Fall, Insomnia, Irritability, Memory Impairment, Mental Disorder, Polyneuropathy, Spinal Fracture

This Insomnia side effect was reported by a consumer or non-health professional from UNITED STATES on Aug 10, 2005. A female patient from UNITED STATES , 72 years of age, weighting 160.0 lb, was diagnosed with and was treated with Flagyl. Patient felt the following Flagyl side effects: depression, dizziness, fall, insomnia, irritability, memory impairment, mental disorder, polyneuropathy, spinal fracture. Flagyl dosage: NA.
Multiple prescriptions taken:
  • Amitriptyline Hcl
  • Hydrochlorothiazide
  • Estropipate
  • Diazepam
The patient was hospitalized. These side effects may potentially be related to Flagyl.

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

Flagyl Insomnia Causes and Reviews


What is Insomnia?

Insomnia is a common sleep disorder. If you have it, you may have trouble falling asleep, staying asleep, or both. As a result, you may get too little sleep or have poor-quality sleep. You may not feel refreshed when you wake up.

What are the symptoms of Insomnia?

Symptoms of Insomnia include:

  • Lying awake for a long time before you fall asleep
  • Sleeping for only short periods
  • Being awake for much of the night
  • Feeling as if you haven't slept at all
  • Waking up too early
What are the types of Insomnia?

Insomnia can be acute (short-term) or chronic (ongoing). Acute Insomnia is common. Common causes include stress at work, family pressures, or a traumatic event. It usually lasts for days or weeks.

Chronic Insomnia lasts for a month or longer. Most cases of chronic Insomnia are secondary. This means they are the symptom or side effect of some other problem, such as certain medical conditions, medicines, and other sleep disorders. Substances such as caffeine, tobacco, and alcohol can also be a cause.

Sometimes chronic Insomnia is the primary problem. This means that it is not caused by something else. Its cause is not well understood, but long-lasting stress, emotional upset, travel and shift work can be factors. Primary Insomnia usually lasts more than one month.

Who gets Insomnia?

Insomnia is common. It affects women more often than men. You can get it at any age, but older adults are more likely to have it. You are also at higher risk of Insomnia if you

  • Have a lot of stress
  • Are depressed or have other emotional distress, such as divorce or death of a spouse
  • Have a lower income
  • Work at night or have frequent major shifts in your work hours
  • Travel long distances with time changes
  • Have an inactive lifestyle
  • Are African American; research shows that African Americans take longer to fall asleep, don't sleep as well, and have more sleep-related breathing problems than whites.
What other problems can Insomnia cause?

Insomnia can cause daytime sleepiness and a lack of energy. It also can make you feel anxious, depressed, or irritable. You may have trouble focusing on tasks, paying attention, learning, and remembering. Insomnia also can cause other serious problems. For example, it could make you may feel drowsy while driving. This could cause you get into a car accident.

How is Insomnia diagnosed?

To diagnose Insomnia, your health care provider

  • Takes your medical history
  • Asks for your sleep history. Your provider will ask you for details about your sleep habits.
  • Does a physical exam, to rule out other medical problems that might cause Insomnia
  • May recommend a sleep study. A sleep study measures how well you sleep and how your body responds to sleep problems.
What are the treatments for Insomnia?

Treatments include lifestyle changes, counseling, and medicines:

  • Lifestyle changes, including good sleep habits, often help relieve acute (short-term) Insomnia. These changes might make it easier for you to fall asleep and stay asleep.
  • A type of counseling called cognitive-behavioral therapy (CBT) can help relieve the anxiety linked to chronic (ongoing) Insomnia
  • Several medicines also can help relieve your Insomnia and allow you to re-establish a regular sleep schedule

If your Insomnia is the symptom or side effect of another problem, it's important to treat that problem (if possible).

NIH: National Heart, Lung, and Blood Institute


Flagyl Insomnia Reviews

Thu, 07 Jan 2010
The exact same thing happened to me after I was prescribed high dose Flagyl for 5 days for suspected diverticulitis (painful bloating, frothy yellow diarrhea, excessive foul gas, etc.) my doc also put me on a Clear Liquid Diet for 3 days before I had this episode... I called 911 from work because I felt chest tightness, shortness of breath, extremely lightheaded, and couldn't stand up or walk without almost passing out. I was confused also with difficulty concentrating and speaking. EMTs found my blood pressure to be 170/100 and my EKG showed a "Right Bundle Branch Block". I felt better after they gave me nitroglycerin and 4 baby aspirins. At the ER my EKGs and cardiac enzymes were normal. A CT scan of my abdomen failed to show any diverticulitis- they told me it looked completely normal. They also said I was dehydrated with a slightly low potassium level which was to be expected after 9 days of diarrhea. They thought my episode was caused by severe intestinal spasms probably due to side effects of the Flagyl and ibuprofen I had taken that morning on basically an empty stomach!
Wed, 12 May 2010
I am currenty on Flagyl for a pelvic infection in combination with vibramyacin. This morning I took the vibramyacin and then was planning on taking the Flagyl an hour later, but I spent the this morning vomiting. I called the dr. and was told by my dr. to continue taking both but with food..vibramyacin said to take on empty stomach, but I think the Flagyl was effecting me from the night before and not drinking enough water in combo with the vibramyacin .. and I think that's why I threw up I did not take the Flagyl before I threw up, however, after I was ok and spoke to the dr hours later , he told me to continue taking both but I took the Flagyl thinking it was the vibramyacin causing all the trouble, I had stomach burning all day and then just a half hour ago I took the Flagyl again and immedialtey had I realized soon after taking it again that it is the culprit causing a heartburn like burning senstation in my stomach and lower esophogas... I am calling my dr. tomorrow again to tell him that I can't deal with this. I tried to push through since I want to be fully rid of the pelvic infection but this is ridiculous. It feels like a horrible heartburn burning sensation.
Fri, 09 Jul 2010
I took Flagyl for 5 days each day feeling worse nausea an inner agitation and yawning for air difficulty breathing.....felt like it was attacking my intestines and the body was reacting and going into flight or fight. Very uncomfortable really unbearable had to stop it feltl like I was poisoning myself. Feel like my insides have been stripped I am left feeling anxious and fragile. Treatment way worse than what it was prescribed for.I think it caused anxiety nearly panic
Fri, 07 Jan 2011
My son was treated with Flagyl and vancomycin for cdiff. Today after 2 weeks off vanco he has mucus in his stool. Does he still have cdiff? What should we do
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Flagyl Side Effects

Diarrhoea (69)
Pyrexia (65)
Paraesthesia (59)
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Nausea (53)
Dizziness (51)
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Rash (44)
Pain (44)
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Confusional State (41)
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Weight Decreased (36)
Urticaria (36)
Chills (34)
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Headache (29)
Hypersensitivity (29)
Renal Failure Acute (27)
Anxiety (27)
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Insomnia (22)
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Fall (18)
Gait Disturbance (18)
Arthralgia (18)
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Depression (17)
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Tremor (16)
Pancreatitis (15)
Polyneuropathy (15)

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