Common Tamiflu Side Effects


The most commonly reported Tamiflu side effects (click to view or check a box to report):

Abnormal Behaviour (901)
Hallucination (414)
No Adverse Event (342)
Vomiting (273)
Delirium (264)
Convulsion (239)
Pneumonia (169)
Depressed Level Of Consciousness (166)
Overdose (165)
Confusional State (161)
Diarrhoea (156)
Nausea (141)
Loss Of Consciousness (141)
Death (120)
Pregnancy (109)
Rash (99)
Pyrexia (98)
Fall (98)
Agitation (97)
Anxiety (91)

➢ More



If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Tamiflu Side Effects Reported to FDA



Tamiflu Side Effect Report#9999222
Irritability, Restless Legs Syndrome, Initial Insomnia, Fatigue, Dizziness
This is a report of a 34-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: influenza, who was treated with Tamiflu 75mg (dosage: NA, start time:
Mar 06, 2014), combined with: NA. and developed a serious reaction and side effect(s): Irritability, Restless Legs Syndrome, Initial Insomnia, Fatigue, Dizziness after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu 75mg treatment in female patients, resulting in Irritability side effect.
Tamiflu Side Effect Report#9998338
Acute Disseminated Encephalomyelitis, Gait Disturbance
This report suggests a potential Tamiflu Acute Disseminated Encephalomyelitis side effect(s) that can have serious consequences. A 2.-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: influenza and used Tamiflu (dosage: 6 Mg/ml, 5 Ml) starting
Jan 21, 2014. After starting Tamiflu the patient began experiencing various side effects, including: Acute Disseminated Encephalomyelitis, Gait DisturbanceAdditional drugs used concurrently: NA.The patient was hospitalized. Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Acute Disseminated Encephalomyelitis, may still occur.
Tamiflu Side Effect Report#9994360
Abnormal Behaviour
This Abnormal Behaviour problem was reported by a physician from JP. A 6-year-old patient (weight: NA) was diagnosed with the following symptoms/conditions: influenza. On
Feb 26, 2014 this consumer started treatment with Tamiflu (dosage: Dosage Is Uncertain.). The following drugs were being taken at the same time: NA. When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Abnormal BehaviourAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Abnormal Behaviour, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9988275
Pancreatitis, Lipase Increased
This Pancreatitis side effect was reported by a physician from FR. A 36-year-old male patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Tamiflu (drug dosage: NA), which was initiated on
Feb 20, 2014. Concurrently used drugs:
  • Valium
  • Midazolam Hydrochloride
  • Augmentin
  • Clamoxyl (france)
  • Rovamycine
  • Sufentanyl
  • Nozinan (france)
  • Catapressan
.After starting to take Tamiflu the consumer reported adverse symptoms, such as: Pancreatitis, Lipase IncreasedThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9970428
Parosmia, Dysgeusia
This is a report of a 49-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: influenza, who was treated with Tamiflu (dosage: 1 Pill, start time:
Feb 20, 2014), combined with: NA. and developed a serious reaction and side effect(s): Parosmia, Dysgeusia after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu treatment in female patients, resulting in Parosmia side effect.
Tamiflu Side Effect Report#9970038
Dyskinesia, Dizziness, Overdose
This report suggests a potential Tamiflu Dyskinesia side effect(s) that can have serious consequences. A 12-year-old patient (weight: NA) from KR was diagnosed with the following symptoms/conditions: influenza and used Tamiflu (dosage: 75 Mg 2 Capsules) starting
Mar 04, 2014. After starting Tamiflu the patient began experiencing various side effects, including: Dyskinesia, Dizziness, OverdoseAdditional drugs used concurrently: NA.The patient was hospitalized. Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Dyskinesia, may still occur.
Tamiflu Side Effect Report#9967660
Mental Disorder
This Mental Disorder problem was reported by a consumer or non-health professional from US. A 6-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On NS this consumer started treatment with Tamiflu (dosage: NA). The following drugs were being taken at the same time: NA. When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Mental DisorderAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Mental Disorder, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9958677
Haematuria, Renal Colic
This Haematuria side effect was reported by a pharmacist from KR. A 68-year-old female patient (weight:NA) experienced the following symptoms/conditions: influenza.The patient was prescribed Tamiflu (drug dosage: NA), which was initiated on
Mar 03, 2014. Concurrently used drugs: NA..After starting to take Tamiflu the consumer reported adverse symptoms, such as: Haematuria, Renal ColicThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9950173
Pain In Extremity, Muscular Weakness
This is a report of a 4-year-old female patient (weight: NA) from KR, suffering from the following health symptoms/conditions: influenza, who was treated with Tamiflu (dosage: NA, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Pain In Extremity, Muscular Weakness after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu treatment in female patients, resulting in Pain In Extremity side effect.
Tamiflu Side Effect Report#9949438
Pneumonia, Respiratory Failure
This report suggests a potential Tamiflu Pneumonia side effect(s) that can have serious consequences. A 49-year-old male patient (weight: NA) from JP was diagnosed with the following symptoms/conditions: NA and used Tamiflu (dosage: NA) starting NS. After starting Tamiflu the patient began experiencing various side effects, including: Pneumonia, Respiratory FailureAdditional drugs used concurrently:
  • Depakene
  • Risperidone
  • Levotomin
  • Tasmolin
  • Rohypnol
  • Lendormin
Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Pneumonia, may still occur.
Tamiflu Side Effect Report#9928312
Abnormal Behaviour, Aggression, Belligerence, Restlessness, Agitation, Hallucination, Sleep Terror, Sleep Disorder, Anxiety
This Abnormal Behaviour problem was reported by a consumer or non-health professional from US. A 7-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: influenza. On
Feb 05, 2014 this consumer started treatment with Tamiflu (dosage: 6 Ml Liquid Twice Daily Taken By Mouth). The following drugs were being taken at the same time: NA. When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Abnormal Behaviour, Aggression, Belligerence, Restlessness, Agitation, Hallucination, Sleep Terror, Sleep Disorder, AnxietyThe patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Abnormal Behaviour, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9927861
Enterocolitis Haemorrhagic, Multi-organ Failure
This Enterocolitis Haemorrhagic side effect was reported by a physician from JP. A 51-year-old male patient (weight:NA) experienced the following symptoms/conditions: influenza,functional gastrointestinal disorder.The patient was prescribed Tamiflu (drug dosage: Dosage Is Uncertain.), which was initiated on
Nov 19, 2009. Concurrently used drugs:
  • Magmitt
  • Gasmotin
  • Lioresal
  • Depakene
  • Clarithromycin (Morning)
  • Lansoprazole (Daytime)
.After starting to take Tamiflu the consumer reported adverse symptoms, such as: Enterocolitis Haemorrhagic, Multi-organ FailureThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9927521
Mental Disorder, Abnormal Behaviour
This is a report of a 6-year-old male patient (weight: NA) from US, suffering from the following health symptoms/conditions: NA, who was treated with Tamiflu (dosage: NA, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Mental Disorder, Abnormal Behaviour after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu treatment in male patients, resulting in Mental Disorder side effect.
Tamiflu Side Effect Report#9927508
Depressed Level Of Consciousness, Gait Disturbance
This report suggests a potential Tamiflu Depressed Level Of Consciousness side effect(s) that can have serious consequences. A 83-year-old male patient (weight: NA) from JP was diagnosed with the following symptoms/conditions: influenza and used Tamiflu (dosage: NA) starting
Feb 15, 2014. After starting Tamiflu the patient began experiencing various side effects, including: Depressed Level Of Consciousness, Gait DisturbanceAdditional drugs used concurrently:
  • Domenan
  • Transamin
  • Mucodyne
  • Zithromax
  • Aspirin
The patient was hospitalized. Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Depressed Level Of Consciousness, may still occur.
Tamiflu Side Effect Report#9927501
Abnormal Behaviour
This Abnormal Behaviour problem was reported by a physician from JP. A 6.-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: influenza. On
Feb 14, 2014 this consumer started treatment with Tamiflu (dosage: NA). The following drugs were being taken at the same time:
  • Klaricid
  • Asverin
  • Mucodyne
  • Polaramine
  • Lac B-r
When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Abnormal BehaviourAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Abnormal Behaviour, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9927468
Deafness
This Deafness side effect was reported by a physician from IE. A 57-year-old male patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Tamiflu (drug dosage: NA), which was initiated on
Feb 21, 2014. Concurrently used drugs: NA..After starting to take Tamiflu the consumer reported adverse symptoms, such as: DeafnessThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9925116
Abdominal Pain Upper, Nausea, Vomiting
This is a report of a 23-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: influenza, who was treated with Tamiflu 75mg Genentech (dosage: One Capsule Twice Daily Taken By Mouth, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Abdominal Pain Upper, Nausea, Vomiting after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu 75mg Genentech treatment in female patients, resulting in Abdominal Pain Upper side effect.
Tamiflu Side Effect Report#9924409
Abnormal Behaviour, Restlessness
This report suggests a potential Tamiflu Abnormal Behaviour side effect(s) that can have serious consequences. A 8-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: influenza and used Tamiflu (dosage: NA) starting
Feb 21, 2014. After starting Tamiflu the patient began experiencing various side effects, including: Abnormal Behaviour, RestlessnessAdditional drugs used concurrently: NA. Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Abnormal Behaviour, may still occur.
Tamiflu Side Effect Report#9924300
Overdose, Nausea, Gastrointestinal Disorder
This Overdose problem was reported by a physician from HK. A patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On NS this consumer started treatment with Tamiflu (dosage: Each Time 1 Capsule). The following drugs were being taken at the same time: NA. When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Overdose, Nausea, Gastrointestinal DisorderAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Overdose, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9921967
Rash
This Rash side effect was reported by a consumer or non-health professional from US. A 61-year-old male patient (weight:NA) experienced the following symptoms/conditions: influenza.The patient was prescribed Tamiflu (drug dosage: NA), which was initiated on
Jan 24, 2014. Concurrently used drugs: NA..After starting to take Tamiflu the consumer reported adverse symptoms, such as: RashThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9921455
Hallucination
This is a report of a 8.-year-old female patient (weight: NA) from CA, suffering from the following health symptoms/conditions: influenza,asthma, who was treated with Tamiflu (dosage: NA, start time:
Feb 10, 2014), combined with:
  • Advair
and developed a serious reaction and side effect(s): Hallucination after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu treatment in female patients, resulting in Hallucination side effect.
Tamiflu Side Effect Report#9918707
Depressed Level Of Consciousness, Convulsion, Delusion, Musculoskeletal Stiffness
This report suggests a potential Tamiflu Depressed Level Of Consciousness side effect(s) that can have serious consequences. A 2.-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: influenza,pyrexia and used Tamiflu (dosage: (a Teaspoon) For 5 Days) starting
Feb 14, 2014. After starting Tamiflu the patient began experiencing various side effects, including: Depressed Level Of Consciousness, Convulsion, Delusion, Musculoskeletal StiffnessAdditional drugs used concurrently:
  • Ibuprofen
Although Tamiflu demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Depressed Level Of Consciousness, may still occur.
Tamiflu Side Effect Report#9915322
Spinal Compression Fracture, Abnormal Behaviour, Epiphysiolysis
This Spinal Compression Fracture problem was reported by a physician from JP. A 11-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: influenza. On 201402 this consumer started treatment with Tamiflu (dosage: Dosage Is Uncertain.). The following drugs were being taken at the same time: NA. When using Tamiflu, the patient experienced the following unwanted symptoms/side effects: Spinal Compression Fracture, Abnormal Behaviour, EpiphysiolysisThe patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Spinal Compression Fracture, may become evident only after a product is in use by the general population.
Tamiflu Side Effect Report#9915320
Abnormal Behaviour
This Abnormal Behaviour side effect was reported by a physician from JP. A 1-year-old male patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Tamiflu (drug dosage: Dosage Is Uncertain.?tamiflu Dry Syrup 3%), which was initiated on NS. Concurrently used drugs: NA..After starting to take Tamiflu the consumer reported adverse symptoms, such as: Abnormal BehaviourThese side effects may potentially be related to Tamiflu.
Tamiflu Side Effect Report#9915313
Pyrexia, Dyspnoea
This is a report of a 3-year-old male patient (weight: NA) from KR, suffering from the following health symptoms/conditions: influenza, who was treated with Tamiflu (dosage: NA, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Pyrexia, Dyspnoea after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Tamiflu treatment in male patients, resulting in Pyrexia side effect. The patient was hospitalized.


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The appearance of Tamiflu on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.

What are common Tamiflu Side Effects for Women?

Women Side Effects Reports
Abnormal Behaviour 247
No Adverse Event 223
Hallucination 155
Vomiting 129
Convulsion 110
Pregnancy 105
Pneumonia 81
Diarrhoea 79
Delirium 78
Nausea 78

What are common Tamiflu Side Effects for Men?

Men Side Effects Reports
Abnormal Behaviour 627
Hallucination 249
Delirium 182
Vomiting 136
Convulsion 125
Depressed Level Of Consciousness 104
Confusional State 102
Pneumonia 86
Diarrhoea 72
Loss Of Consciousness 71

Track Your Side Effects

Note Your Observations

It is really important to keep track of your health symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:
    Side Effects Scale Date & Time Other Medicine(s) or Treatment(s)
    Scale: 1 = very mild to 10 = very bad

    Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

    You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Tamiflu reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
    FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.

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    Tamiflu Safety Alerts, Active Ingredients, Usage Information

    NDC 0004-0800
    Type HUMAN PRESCRIPTION DRUG
    Proprietary Name Tamiflu
    Name oseltamivir phosphate
    Dosage Form CAPSULE
    Route ORAL
    On market since 19991027
    Labeler Genentech, Inc.
    Active Ingredient(s) OSELTAMIVIR PHOSPHATE
    Strength(s) 75
    Unit(s) mg/1
    Pharma Class

    Tamiflu Dosage, Warnings, Usage.

    Side Effects reported to FDA: 5585

    Tamiflu safety alerts: 2011 2010 2009 2008 2007 2006 2003

    Reported deaths: 835

    Reported hospitalizations: 1492

    Tamiflu (oseltamivir phosphate) for Oral Suspension: Label Change-New Concentration (6 mg/mL)

    Patients may potentially receive either concentration (6 mg/mL or 12 mg/mL) from their pharmacy during the next influenza season (2011-2012).

     

    [Posted 07/11/2011]

     

    AUDIENCE: Pediatrics, Pharmacy

    ISSUE: Labeling changes are being made to Tamiflu oral suspension to reduce the possibility of prescribing and dosing confusion that can lead to medication errors.  The changes to the product label include:

    • A change in the concentration of Tamiflu from 12 mg/mL to 6 mg/mL. The lower concentration of Tamiflu is less likely to become frothy when shaken, which helps to ensure an accurate measurement. A change in the measurements of the oral dosing device from milligrams (mg = weight) to milliliters (mL = volume).
    • A change in the dosing table for Tamiflu to include a column for the volume (mL) based on the new 6 mg/mL concentration. Revised container labels and carton packaging. Revised compounding instructions for pharmacies to prepare a 6 mg/mL oral suspension from Tamiflu capsules in an emergency situation only if the commercially manufactured Tamiflu for oral suspension is unavailable.

    BACKGROUND: Tamiflu is in a class of medications called neuraminidase inhibitors. These drugs work by stopping the spread of the influenza (flu) virus in the body. Genentech, the manufacturer of Tamiflu for oral suspension, plans to begin distribution of the new 6 mg/mL product in July 2011.  The company has instituted a voluntary Take Back Program for wholesale buyers, distributors and pharmacies to remove the 12 mg/mL product from the marketplace. The 12 mg/mL product will remain in the marketplace and in state or national stockpiles until current supplies expire.

    RECOMMENDATION: It is important for healthcare professionals to be aware that a patient may potentially receive either concentration (6 mg/mL or 12 mg/mL) from their pharmacy during the next influenza season (2011-2012). Steps should be taken to avoid the potential for a medication error due to confusion between the two concentrations. Prescribers should include the new concentration (6 mg/mL) and dose in milliliters on all prescriptions for Tamiflu for oral suspension.

    Healthcare professionals and patients are encouraged to report adverse events or side effects related to the use of these products to the FDA's MedWatch Safety Information and Adverse Event Reporting Program:

    • Complete and submit the report Online: www.fda.gov/MedWatch/report.htm
    • Download form or call 1-800-332-1088 to request a reporting form, then complete and return to the address on the pre-addressed form, or submit by fax to 1-800-FDA-0178

     

     

    [07/11/2011 – Drug Safety Communication - FDA]

    [07/13/2011 - Consumer Update - FDA]

    [12/11/09 - Tamiflu Information Page - FDA]

     

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