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Flagyl Headache Side Effects

Flagyl Headache Side Effect Reports


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

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



Dyspnoea, Burning Sensation, Rash Papular, Somnolence, Headache, Dizziness, Pain In Extremity, Breast Pain

This Headache side effect was reported by a consumer or non-health professional from US. A 45-year-old female patient (weight:NA) experienced the following symptoms/conditions: giardiasis. The patient was prescribed Flagyl (dosage: 250 Mg 3 X Per Day Po), which was started on Apr 21, 2013. Concurrently used drugs: NA. When starting to take Flagyl the consumer reported the following symptoms:
  • Dyspnoea
  • Burning Sensation
  • Rash Papular
  • Somnolence
  • Headache
  • Dizziness
  • Pain In Extremity
  • Breast Pain
These side effects may potentially be related to Flagyl.
Decreased Appetite, Headache, Burning Sensation, Back Pain, Vulvovaginal Discomfort, Visual Impairment

This Headache Flagyl side effect was reported by a health professional from US on Jan 16, 2013. A Female , 72 years of age, was treated with Flagyl. The patient presented the following health conditions:
  • Decreased Appetite
  • Headache
  • Burning Sensation
  • Back Pain
  • Vulvovaginal Discomfort
  • Visual Impairment
. Flagyl dosage: Unk. Additional drugs used at the same time: NA.
Headache, Confusional State, Asthenia, Vision Blurred, Meningitis Aseptic, Csf Glucose Increased, Csf Protein Increased

This is a Flagyl side effect report of a 77-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: diverticulitis, who was treated with Flagyl (dosage:NA, start time: Dec 03, 2012), combined with: NA., and developed a serious reaction and a Headache side effect. The patient presented with:
  • Headache
  • Confusional State
  • Asthenia
  • Vision Blurred
  • Meningitis Aseptic
  • Csf Glucose Increased
  • Csf Protein Increased
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Flagyl treatment in female patients suffering from diverticulitis, resulting in Headache.

Sleep Disorder, Dystonia, Disturbance In Attention, Nervous System Disorder, Muscle Spasms, Pain In Extremity, Headache, Hallucination, Confusional State

A 54-year-old female patient (weight: NA) from NL with the following symptoms: giardiasis started Flagyl treatment (dosage: (df Oral)) on Mar 24, 2005. Soon after starting Flagyl treatment, the consumer experienced several side effects, including:
  • Sleep Disorder
  • Dystonia
  • Disturbance In Attention
  • Nervous System Disorder
  • Muscle Spasms
  • Pain In Extremity
  • Headache
  • Hallucination
  • Confusional State
. Concurrently used drugs:
  • Diazepam
  • Codeine
This finding indicates that some patients can be more vulnerable to developing Flagyl side effects, such as Headache.
Food Aversion, Angioedema, Chromaturia, Headache

A patient from DK was prescribed and started Flagyl on Nov 09, 2012. Patient felt the following Flagyl side effects: food aversion, angioedema, chromaturia, headache Additional patient health information: male , 78 years of age, The consumer reported the following symptoms: was diagnosed with and. Flagyl dosage: NA. Concurrently used drugs:
  • Azithromycin
Nausea, Headache, Dizziness, Vomiting

This report suggests a potential Flagyl Headache side effect(s) that can have serious consequences. A 32-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): bacterial vaginosis and used Flagyl (dosage: 500 Mg, 2x/day) starting Nov 01, 2011. Soon after starting Flagyl the patient began experiencing various side effects, including:
  • Nausea
  • Headache
  • Dizziness
  • Vomiting
Drugs used concurrently:NA. Although Flagyl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Headache, may still occur.
Headache

An adverse event was reported by a consumer or non-health professional on May 18, 2012 by a male taking Flagyl (dosage: Unk) . Location: UNITED STATES , weighting 200.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Flagyl side effects: headache. Additional medications/treatments:
Muscle Twitching, Dyspepsia, Visual Impairment, Headache, Photopsia, Formication, Insomnia, Tinnitus, Retching

This Headache problem was reported by a consumer or non-health professional from UNITED STATES. A 30-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): diarrhoea.On Jun 14, 2011 a consumer started treatment with Flagyl (dosage: 500mg 2x 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:
  • Muscle Twitching
  • Dyspepsia
  • Visual Impairment
  • Headache
  • Photopsia
  • Formication
  • Insomnia
  • Tinnitus
  • Retching
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Headache, may become evident only after a product is in use by the general population.
Nasopharyngitis, Oropharyngeal Pain, Headache

This is a Flagyl side effect report of a 30-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Flagyl (dosage: NA) starting Aug 01, 2010. Concurrently used drugs:
  • Humira
  • Bleotha
Soon after that, the consumer experienced the following of symptoms:
  • Nasopharyngitis
  • Oropharyngeal Pain
  • Headache
This opens a possibility that Flagyl could cause Headache and that some patients may be more susceptible.
Erythema, Fatigue, Headache, Hypersensitivity, Infection, Malaise, Oedema Peripheral, Pruritus, Quality Of Life Decreased

This Headache side effect was reported by a consumer or non-health professional from UNITED KINGDOM on Oct 15, 2010. A female patient from UNITED KINGDOM , 79 years of age, weighting 108.0 lb, was diagnosed with and was treated with Flagyl. Directly after treatment started, patient experienced the unwanted or unexpected Flagyl side effects: erythema, fatigue, headache, hypersensitivity, infection, malaise, oedema peripheral, pruritus, quality of life decreased. Flagyl dosage: 400mg Bd Oral Use.
Associated medications used:
  • Corticosteroid Nos
  • Evorel
  • Lansoprazole
These side effects may potentially be related to Flagyl.
Gardnerella Infection, Headache, Hypersensitivity, Joint Swelling, Neck Pain, Pruritus, Pyrexia, Rash Macular

This Headache side effect was reported by a consumer or non-health professional from UNITED STATES. A 56-year-old female patient (weight:NA) experienced the following symptoms/conditions: gastrointestinal disorder,vaginal disorder. The patient was prescribed Flagyl (dosage: 500 Mg, 2x/day, Oral), which was started on Apr 22, 2009. Concurrently used drugs: NA. When starting to take Flagyl the consumer reported the following symptoms:
  • Gardnerella Infection
  • Headache
  • Hypersensitivity
  • Joint Swelling
  • Neck Pain
  • Pruritus
  • Pyrexia
  • Rash Macular
These side effects may potentially be related to Flagyl.
Arthralgia, Dysgeusia, Headache, Insomnia, Nausea, Paraesthesia

This Headache 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
Headache, Nausea, Toothache

This is a Flagyl side effect report of a 50-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: tooth abscess, who was treated with Flagyl (dosage:1 Tablet Every 8 Hours Po, start time: Mar 26, 2009), combined with: NA., and developed a serious reaction and a Headache side effect. The patient presented with:
  • Headache
  • Nausea
  • Toothache
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 tooth abscess, resulting in Headache.
Dizziness, Headache, Hypersensitivity, Hypoaesthesia, Nausea

A 56-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: vaginitis bacterial started Flagyl treatment (dosage: 500 Mgs. Twice A Day Po) on Dec 29, 2008. Soon after starting Flagyl treatment, the consumer experienced several side effects, including:
  • Dizziness
  • Headache
  • Hypersensitivity
  • Hypoaesthesia
  • Nausea
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Flagyl side effects, such as Headache.
Abdominal Discomfort, Asthenia, Balance Disorder, Chest Pain, Dizziness, Dyspnoea, Headache, Hyperhidrosis, Hypersensitivity

A female patient from BRAZIL was prescribed and started Flagyl on Apr 08, 2008. After Flagyl was administered, patient encountered several Flagyl side effects: abdominal discomfort, asthenia, balance disorder, chest pain, dizziness, dyspnoea, headache, hyperhidrosis, hypersensitivity Additional patient health information: Female , 22 years of age, weighting 116.8 lb, The consumer reported the following symptoms: was diagnosed with and. Flagyl dosage: Dose Quantity: 1. Concurrently used drugs: NA.
Abdominal Discomfort, Asthenia, Balance Disorder, Chest Pain, Dizziness, Dyspnoea, Headache, Hyperhidrosis, Hypersensitivity

This report suggests a potential Flagyl Headache side effect(s) that can have serious consequences. A 22-year-old female patient from BRAZIL (weight:NA) was diagnosed with the following health condition(s): NA and used Flagyl (dosage: Dose Quantity: 1) starting Mar 30, 2008. Soon after starting Flagyl the patient began experiencing various side effects, including:
  • Abdominal Discomfort
  • Asthenia
  • Balance Disorder
  • Chest Pain
  • Dizziness
  • Dyspnoea
  • Headache
  • Hyperhidrosis
  • Hypersensitivity
Drugs used concurrently:NA. Although Flagyl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Headache, may still occur.
Headache, Pharyngolaryngeal Pain, Pyrexia, Syncope, Vomiting

An adverse event was reported by a consumer or non-health professional on Sep 19, 2007 by a Female taking Flagyl (dosage: Dose: Unk) . Location: BRAZIL , child 10 years of age, patient began experiencing various side effects, including: Patient felt the following Flagyl side effects: headache, pharyngolaryngeal pain, pyrexia, syncope, vomiting. Additional medications/treatments:
Headache, Musculoskeletal Stiffness

This Headache problem was reported by a consumer or non-health professional from . A 42-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Aug 16, 2007 a consumer started treatment with Flagyl (dosage: Dose: 1 Ovule). The following drugs/medications were being taken at the same time: NA. When commencing Flagyl, the patient experienced the following unwanted symptoms /side effects:
  • Headache
  • Musculoskeletal Stiffness
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Headache, may become evident only after a product is in use by the general population.
Diarrhoea, Dizziness, Headache, Myalgia, Pollakiuria

This is a Flagyl side effect report of a 22-year-old female patient (weight: NA) from . The patient developed the following symptoms/conditions: NA and was treated with Flagyl (dosage: NA) starting Jul 04, 2007. Concurrently used drugs:
  • Amoxicillin
  • Chlorhexidine Gluconate (Dose: 0.2%)
Soon after that, the consumer experienced the following of symptoms:
  • Diarrhoea
  • Dizziness
  • Headache
  • Myalgia
  • Pollakiuria
This opens a possibility that Flagyl could cause Headache and that some female patients may be more susceptible.
Headache, Hypotonic-hyporesponsive Episode, Nausea, Syncope

This Headache side effect was reported by a physician from IRELAND on Jul 23, 2007. A female patient from IRELAND , 54 years of age, was treated with Flagyl. Patient felt the following Flagyl side effects: headache, hypotonic-hyporesponsive episode, nausea, syncope. Flagyl dosage: NA. These side effects may potentially be related to Flagyl.

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

Flagyl Headache Causes and Reviews


Almost everyone has had a Headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor.

The most common type of Headache is a tension Headache. Tension Headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related to stress, depression or anxiety. You are more likely to get tension Headaches if you work too much, don't get enough sleep, miss meals, or use alcohol.

Other common types of Headaches include migraines, cluster Headaches, and sinus Headaches. Most people can feel much better by making lifestyle changes, learning ways to relax and taking pain relievers.

Not all Headaches require a doctor's attention. But sometimes Headaches warn of a more serious disorder. Let your health care provider know if you have sudden, severe Headaches. Get medical help right away if you have a Headache after a blow to your head, or if you have a Headache along with a stiff neck, fever, confusion, loss of consciousness, or pain in the eye or ear.

NIH: National Institute of Neurological Disorders and Stroke


Flagyl Headache 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)
Vomiting (56)
Nausea (53)
Dizziness (51)
Hypoaesthesia (46)
Rash (44)
Pain (44)
Neuropathy Peripheral (43)
Abdominal Pain (43)
Confusional State (41)
Pruritus (37)
Dyspnoea (37)
Weight Decreased (36)
Urticaria (36)
Chills (34)
Thrombocytopenia (32)
Dysgeusia (31)
Headache (29)
Hypersensitivity (29)
Renal Failure Acute (27)
Anxiety (27)
Erythema (26)
Convulsion (26)
Oedema Peripheral (23)
Insomnia (22)
Neutropenia (22)
Asthenia (22)
Cholestasis (22)
Malaise (21)
Fatigue (21)
Anaemia (20)
Burning Sensation (19)
Fall (18)
Gait Disturbance (18)
Arthralgia (18)
Alanine Aminotransferase Increased (17)
Clostridium Difficile Colitis (17)
Abdominal Discomfort (17)
Depression (17)
Toxic Skin Eruption (17)
Muscle Spasms (17)
Hepatitis (16)
Hypotension (16)
Pancreatitis Acute (16)
Pain In Extremity (16)
Tremor (16)
Pancreatitis (15)
Polyneuropathy (15)

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