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Review: could Tamiflu cause Taste loss?

Summary: Taste loss is found among people who take Tamiflu, especially for people who are female, 50-59 old, have been taking the drug for < 1 month, also take medication Prozac, and have The flu.

We study 10,422 people who have side effects while taking Tamiflu from FDA and social media. Among them, 8 have Taste loss. Find out below who they are, when they have Taste loss and more.

You are not alone: join a mobile support group for people who take Tamiflu and have Taste loss >>>






Tamiflu has active ingredients of oseltamivir phosphate. It is often used in the flu. (latest outcomes from 10,941 Tamiflu users)

Taste loss

Taste loss has been reported by people with high blood pressure, high blood cholesterol, depression, gastroesophageal reflux disease, the flu. (latest reports from 1,295 Taste loss patients)

On Feb, 24, 2015: 10,422 people reported to have side effects when taking Tamiflu. Among them, 8 people (0.08%) have Taste Loss.

Trend of Taste loss in Tamiflu reports

Time on Tamiflu when people have Taste loss * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ years
Taste loss100.00%0.00%0.00%0.00%0.00%0.00%0.00%

Gender of people who have Taste loss when taking Tamiflu * :

Taste loss62.50%37.50%

Age of people who have Taste loss when taking Tamiflu * :

Taste loss0.00%0.00%0.00%0.00%14.29%0.00%71.43%14.29%

Severity of Taste loss when taking Tamiflu ** :

leastmoderateseveremost severe
Taste loss0.00%75.00%25.00%0.00%

How people recovered from Taste loss ** :

while on the drugafter off the drugnot yet
Taste loss0.00%0.00%100.00%

Top conditions involved for these people * :

  1. Flu (3 people, 37.50%)
  2. H1n1 (1 people, 12.50%)

Top co-used drugs for these people * :

  1. Prozac (2 people, 25.00%)
  2. Percocet (2 people, 25.00%)
  3. Advil (2 people, 25.00%)
  4. Ascorbic acid (2 people, 25.00%)
  5. Tenormin (2 people, 25.00%)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

Comments for this study:

Jackie Lyons (2 years ago):

I was prescribed Tamiflu after a bout of flu about a month ago. I was quite surprised. I thought that Tamiflu had only been used in cases of suspected swine flu. I have lost about 99% of my sense of smell leaving me almost unable to taste anything! I was not warned that this was a known side-effect or definitely would not have taken this drug. Does anyone know if this is a temporary situation? From the previous posts this does not seem to be the case. I am a 51 year old female from Ireland.
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Bridget (2 years ago):

You have GOT to be kidding me. I have lost about 95% of my taste AND smell but I was thinking (hoping!) maybe because I had a lot of nasal congestion that it was just temporary. But then I got to thinking-My nose has been stuffy lots of times, and I've never lost my taste?! Then I got to thinking about the tamiflu...I'm kinda freakin out at the thought that this could continue even after I'm off it and over the flu. Time
Will tell! Crossing my fingers!!!! You take your sense of taste and smell for granted until you lose it!!! Geez!!!!
Reply the comment

Billie eaton (3 years ago):

I took Tamiflu in July 2009. I have not had a sense of taste or smell since that time. Very discouraging. Once in a while I can taste on first bite mustard and some herbs. I'm hoping that the two senses will return some day. Such a loss.
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Get connected: join our support group of tamiflu and taste loss on

Do you have Taste Loss while taking Tamiflu?

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- support group for people who have Taste Loss

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  • Narcolepsy-cataplexy and epilepsy after taking tamiflu (1 response)
    Sorry for my unperfect English : ) I'm french.

    I suddenly declared an "atypic" Narcolepsy-cataplexy after taking two pills of TAMIFLU in 2007. My husband was ill, and our family doctor recommanded me and my baby to take the same medecine otherwise we should also catch the "bad" flu.

    I took two pills of TAMIFLU and fell down at my office, unanimated but not unconscious, unable to move, prisonner in my own body. Till this day, I couldn't help falling down 10 to 15 Times a day, being sleepy all the day long, being paralysed when I Wake up in the morning. Several nights I also experimented tonic-clonic epilepsy seizures and insomnia. My life would never be the same till then.

    I was misdiagnotised the first time, since I didn't carry the "HLA specific type" confirming a typical narcolepsy. But the cataplexy attacks were so specifically that I obtained to be recieved in a sleep-center to check my sleepness architecture. The results were shortly confirming the diagnosis of Narcolpesy-Cataplexy in its nontypical form, "secondary type" as in rare cases as following a trauma, and also the diagnostics of frontal epilepsy.

    I precise I did NEVER had seizure or epilepsy crises before the day I fell down after taking TAMILFU.

    At the RMI, I was detected an "intrasellar arachnoidocele" which could explain the survenience of my symptoms. It's sudden appearance might have been a side effect of TAMIFLU which is now known to rich (oseltamivir substance)the blood-brain barrier and cause irreversible dammages to brain.

    As a conclusion, TAMIFLU appeared to be responsable of a "medecinal intoxication" causing the narcolepsy-cataplexy I suddenly suffer since then.

    Several Years after, we hear about narcolepsy cases caused by the massive H1N1 vaccinations... But what about me, am I the only one case declared by TAMIFLU and its molecule oseltamivir ?

    Astrid B

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  • From this study (4 days ago):

  • Took Tamiflu for Type A Flu on January 21, 2015. Took two days of 5 days RX, made me sick to my stomach, stopped taking. Even since then, I have no sense of smell or taste.


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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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