Fluoxetine Serotonin Syndrome Side Effect Reports


The following Fluoxetine Serotonin Syndrome side effect reports were submitted by healthcare professionals and consumers.

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

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


Serotonin Syndrome, Tremor, Dyskinesia, Mydriasis, Hyperventilation, Feeling Abnormal

This Serotonin Syndrome side effect was reported by a physician from GB. A 15-year-old patient (weight:NA) experienced the following symptoms/conditions: depression. The patient was prescribed Fluoxetine (dosage: NA), which was started on Feb 07, 2014. Concurrently used drugs: NA. When starting to take Fluoxetine the consumer reported the following symptoms:
  • Serotonin Syndrome
  • Tremor
  • Dyskinesia
  • Mydriasis
  • Hyperventilation
  • Feeling Abnormal
These side effects may potentially be related to Fluoxetine.
Serotonin Syndrome

This Serotonin Syndrome Fluoxetine side effect was reported by a health professional from IN on Feb 25, 2014. A male , 46 years of age, was treated with Fluoxetine. The patient presented the following health conditions:
  • Serotonin Syndrome
. Fluoxetine dosage: NA. Additional drugs used at the same time:
  • Tramadol/acetaminophen
  • Ondansetron
Serotonin Syndrome, Mania, Paranoia

This is a Fluoxetine side effect report of a 72-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: NA, who was treated with Fluoxetine (dosage:20 Mg, Daily (1/d), start time: NS), combined with:
  • Tramadol (150 Mg, Daily (1/d))
  • Acetaminophen
, and developed a serious reaction and a Serotonin Syndrome side effect. The patient presented with:
  • Serotonin Syndrome
  • Mania
  • Paranoia
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Fluoxetine treatment in female patients suffering from NA, resulting in Serotonin Syndrome.
Muscle Spasms, Muscle Twitching, Strabismus, Tremor, Substance Use, Cerebral Haemorrhage, Serotonin Syndrome, Somatoform Disorder

A 16-year-old female patient (weight: NA) from US with the following symptoms: depression started Fluoxetine treatment (dosage: NA) on 201312. Soon after starting Fluoxetine treatment, the consumer experienced several side effects, including:
  • Muscle Spasms
  • Muscle Twitching
  • Strabismus
  • Tremor
  • Substance Use
  • Cerebral Haemorrhage
  • Serotonin Syndrome
  • Somatoform Disorder
. Concurrently used drugs:
  • Diclofenac
  • L-thyroxin Valette
This finding indicates that some patients can be more vulnerable to developing Fluoxetine side effects, such as Serotonin Syndrome.
Completed Suicide, Serotonin Syndrome, Suicidal Ideation

A female patient from GB was prescribed and started Fluoxetine on Feb 07, 2014. Patient felt the following Fluoxetine side effects: completed suicide, serotonin syndrome, suicidal ideation Additional patient health information: Female , 21 years of age, weighting 143.3 lb, The consumer reported the following symptoms: was diagnosed with and. Fluoxetine dosage: Unk. Concurrently used drugs:
  • Imigran (Unk)
Serotonin Syndrome, Suicidal Ideation, Completed Suicide

This report suggests a potential Fluoxetine Serotonin Syndrome side effect(s) that can have serious consequences. A 21-year-old female patient from GB (weight:NA) was diagnosed with the following health condition(s): depression,migraine and used Fluoxetine (dosage: NA) starting Sep 14, 2012. Soon after starting Fluoxetine the patient began experiencing various side effects, including:
  • Serotonin Syndrome
  • Suicidal Ideation
  • Completed Suicide
Drugs used concurrently:NA. Although Fluoxetine demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Serotonin Syndrome, may still occur.
Serotonin Syndrome

An adverse event was reported by a physician on Aug 27, 2013 by a male taking Fluoxetine (dosage: NA) was diagnosed with and. Location: US , 23 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Fluoxetine side effects: serotonin syndrome. Additional medications/treatments:
Serotonin Syndrome

This Serotonin Syndrome problem was reported by a physician from US. A 23-year-old patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Fluoxetine (fluoxetine) (dosage: NA). The following drugs/medications were being taken at the same time: NA. When commencing Fluoxetine (fluoxetine), the patient experienced the following unwanted symptoms /side effects:
  • Serotonin Syndrome
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Serotonin Syndrome, may become evident only after a product is in use by the general population.
Serotonin Syndrome

This is a Fluoxetine Hcl Capsules Usp, 10mg, 20 Mg, 40 Mg side effect report of a 39-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Fluoxetine Hcl Capsules Usp, 10mg, 20 Mg, 40 Mg (dosage: NA) starting NS. Concurrently used drugs:
  • Linezolid
  • Disulfiram
  • Buspirone
  • Cyclobenzaprine
  • Folate Sodium
  • Lorazepam
  • Haloperidol
Soon after that, the consumer experienced the following of symptoms:
  • Serotonin Syndrome
The patient was hospitalized. This opens a possibility that Fluoxetine Hcl Capsules Usp, 10mg, 20 Mg, 40 Mg could cause Serotonin Syndrome and that some female patients may be more susceptible.
Serotonin Syndrome, Movement Disorder, Muscle Rigidity, Toxicity To Various Agents, Hyperthermia Malignant, Neuroleptic Malignant Syndrome

This Serotonin Syndrome side effect was reported by a physician from US on Aug 23, 2013. A patient from US , 23 years of age, was treated with Fluoxetine (fluoxetine). Directly after treatment started, patient experienced the unwanted or unexpected Fluoxetine side effects: serotonin syndrome, movement disorder, muscle rigidity, toxicity to various agents, hyperthermia malignant, neuroleptic malignant syndrome. Fluoxetine (fluoxetine) dosage: NA.
Associated medications used:
  • Diazepam (At Night)
  • Midazolam (midazolam) (Single)
  • Propofol (Single)
  • Fentanyl (Single)
  • Remifentanil
  • Bupivacaine
These side effects may potentially be related to Fluoxetine (fluoxetine).
Serotonin Syndrome

This Serotonin Syndrome side effect was reported by a health professional from US. A 23-year-old patient (weight:NA) experienced the following symptoms/conditions: depression,anxiety. The patient was prescribed Fluoxetine (dosage: Unk), which was started on NS. Concurrently used drugs: NA. When starting to take Fluoxetine the consumer reported the following symptoms:
  • Serotonin Syndrome
The patient was hospitalized. These side effects may potentially be related to Fluoxetine.
Serotonin Syndrome, Rash Morbilliform, Rash Maculo-papular, Rash Erythematous, Diarrhoea, Nausea, Restlessness, Dizziness, Myalgia

This Serotonin Syndrome Fluoxetine Hcl side effect was reported by a pharmacist from US on Jul 25, 2013. A Female , 57 years of age, was treated with Fluoxetine Hcl. The patient presented the following health conditions:
  • Serotonin Syndrome
  • Rash Morbilliform
  • Rash Maculo-papular
  • Rash Erythematous
  • Diarrhoea
  • Nausea
  • Restlessness
  • Dizziness
  • Myalgia
. Fluoxetine Hcl dosage: 40 Mg, 1x/day. Additional drugs used at the same time:
  • Tramadol Hcl (Unk)
  • Doxepin Hcl (Unk)
  • Milnacipran (12.5 Mg Once On Day 1)
  • Milnacipran (12.5 Mg Twice Daily On Days 2-3)
  • Milnacipran (25 Mg Twice Daily On Days 4-7)
  • Milnacipran (50 Mg Twice Daily Thereafter)
  • Alprazolam (Unk)
  • Zolpidem (Unk)
The patient was hospitalized.
Headache, Nausea, Photophobia, Phonophobia, Serotonin Syndrome, Toxicity To Various Agents, Dysarthria, Hyperhidrosis, Agitation

This is a Fluoxetine (fluoxetine) side effect report of a 36-year-old female patient (weight:NA) from IN, suffering from the following symptoms/conditions: back pain, who was treated with Fluoxetine (fluoxetine) (dosage:NA, start time: NS), combined with:
  • Ultracet
, and developed a serious reaction and a Serotonin Syndrome side effect. The patient presented with:
  • Headache
  • Nausea
  • Photophobia
  • Phonophobia
  • Serotonin Syndrome
  • Toxicity To Various Agents
  • Dysarthria
  • Hyperhidrosis
  • Agitation
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Fluoxetine (fluoxetine) treatment in female patients suffering from back pain, resulting in Serotonin Syndrome.
Serotonin Syndrome, Headache, Nausea, Vomiting

A 46-year-old patient (weight: NA) from IN with the following symptoms: back pain,nausea,vomiting started Fluoxetine treatment (dosage: NA) on NS. Soon after starting Fluoxetine treatment, the consumer experienced several side effects, including:
  • Serotonin Syndrome
  • Headache
  • Nausea
  • Vomiting
. Concurrently used drugs:
  • Ondasetron Hcl (16 Mg (8 Mg 2 In 1 D))
  • Ondasetron Hcl (16 Mg (8 Mg 2 In 1 D))
  • Tramadol And Acetaminophen (37.5/325)
This finding indicates that some patients can be more vulnerable to developing Fluoxetine side effects, such as Serotonin Syndrome.
Procedural Headache, Dyspnoea, Somnolence, Loss Of Consciousness, Tremor, Unresponsive To Stimuli, Serotonin Syndrome, Toxicity To Various Agents

A patient from COUNTRY NOT SPECIFIED was prescribed and started Fluoxetine on Jul 22, 2013. After Fluoxetine was administered, patient encountered several Fluoxetine side effects: procedural headache, dyspnoea, somnolence, loss of consciousness, tremor, unresponsive to stimuli, serotonin syndrome, toxicity to various agents Additional patient health information: male , 24 years of age, The consumer reported the following symptoms: was diagnosed with and. Fluoxetine dosage: NA. Concurrently used drugs:
  • Meperidine
  • Meperidine
  • Fentanyl
  • Propofol
  • Morphine
  • Sevoflurane
  • Midazolam
Off Label Use, Serotonin Syndrome, Nausea, Vomiting, Headache, Restlessness, Sleep Disorder, Tachycardia, Body Temperature Increased

This report suggests a potential Fluoxetine Hcl Serotonin Syndrome side effect(s) that can have serious consequences. A 46-year-old patient from IN (weight:NA) was diagnosed with the following health condition(s): back pain,nausea,vomiting and used Fluoxetine Hcl (dosage: 40 Mg, 1x/day) starting NS. Soon after starting Fluoxetine Hcl the patient began experiencing various side effects, including:
  • Off Label Use
  • Serotonin Syndrome
  • Nausea
  • Vomiting
  • Headache
  • Restlessness
  • Sleep Disorder
  • Tachycardia
  • Body Temperature Increased
Drugs used concurrently:
  • Ondansetron (8 Mg, 2x/day)
  • Ondansetron
  • Ultracet (37.5/325)
Although Fluoxetine Hcl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Serotonin Syndrome, may still occur.
Chest Discomfort, Palpitations, Chills, Serotonin Syndrome, Dyspnoea, Feeling Abnormal, Tremor, Abasia

An adverse event was reported by a health professional on Jul 15, 2013 by a male taking Fluoxetine (dosage: Unk) was diagnosed with and. Location: GB , 33 years of age, weighting 224.9 lb, patient began experiencing various side effects, including: Patient felt the following Fluoxetine side effects: chest discomfort, palpitations, chills, serotonin syndrome, dyspnoea, feeling abnormal, tremor, abasia. Additional medications/treatments:
Multiple prescriptions taken:
  • Zomig (Unk)
  • Aloe Vera
  • Migraleve Pink
  • Migraleve Yellow
  • Seretide
Chest Discomfort, Serotonin Syndrome, Dyspnoea, Feeling Abnormal

This Serotonin Syndrome problem was reported by a consumer or non-health professional from GB. A 33-year-old patient (weight: NA) was diagnosed with the following medical condition(s): depressed mood,migraine.On Jun 11, 2013 a consumer started treatment with Fluoxetine (dosage: NA). The following drugs/medications were being taken at the same time:
  • Zomig
  • Aloe Vera
  • Migraleve /00436001/
  • Seretide
When commencing Fluoxetine, the patient experienced the following unwanted symptoms /side effects:
  • Chest Discomfort
  • Serotonin Syndrome
  • Dyspnoea
  • Feeling Abnormal
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Serotonin Syndrome, may become evident only after a product is in use by the general population.
Serotonin Syndrome

This is a Fluoxetine side effect report of a 24-year-old patient (weight: NA) from JO. The patient developed the following symptoms/conditions: depression,induction of anaesthesia and was treated with Fluoxetine (dosage: 20 Mg/day) starting NS. Concurrently used drugs:
  • Fentanyl (100 ?g)
  • Pethidine (100 Mg)
  • Sevoflurane (Unk)
  • Midazolam (3 Mg, Unk)
  • Propofol (150 Mg, Unk)
  • Propofol (150 Mg)
  • Morphine (3 Mg, Unk)
Soon after that, the consumer experienced the following of symptoms:
  • Serotonin Syndrome
The patient was hospitalized. This opens a possibility that Fluoxetine could cause Serotonin Syndrome and that some patients may be more susceptible.
Chest Discomfort, Palpitations, Abasia, Feeling Abnormal, Dyspnoea, Tremor, Chills, Serotonin Syndrome

This Serotonin Syndrome side effect was reported by a health professional from GB on Jul 08, 2013. A patient from GB , 33 years of age, weighting 226.0 lb, was diagnosed with and was treated with Fluoxetine. Patient felt the following Fluoxetine side effects: chest discomfort, palpitations, abasia, feeling abnormal, dyspnoea, tremor, chills, serotonin syndrome. Fluoxetine dosage: 20 Mg, Unk.
Multiple prescriptions taken:
  • Zomig (2.5 Mg/m2, Unk)
  • Seretide
  • Migraleve
  • Migraleve /00116401/
  • Aloe Vera
These side effects may potentially be related to Fluoxetine.
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DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Fluoxetine Serotonin Syndrome Causes and Reviews


Antidepressants are medicines that treat depression. Your doctor can prescribe them for you. They work to balance some of the natural chemicals in our brains. It may take several weeks for them to help. There are several types of antidepressants. You and your doctor may have to try a few before finding what works best for you.

Antidepressants may cause mild side effects that usually do not last long. These may include headache, nausea, sleep problems, restlessness, and sexual problems. Tell your doctor if you have any side effects. You should also let your doctor know if you take any other medicines, vitamins, or herbal supplements.

It is important to keep taking your medicines, even if you feel better. Do not stop taking your medicines without talking to your doctor. You often need to stop antidepressants gradually.

NIH: National Institute of Mental Health


Fluoxetine Serotonin Syndrome Reviews

Mon, 16 Apr 2012

I like your site.

Wed, 26 Aug 2009
can it increase your fertilty
Mon, 05 Oct 2009
My chest has grown since being on Fluoxetine, however i am also on the pill and i know that is partially why, but i'm wondering if Fluoxetine could be also responsible?
Mon, 08 Dec 2008
Yes I have had mild Fluoxetine side effects. I am only 12 years old but it was prescribed to me by a doctor.
Fri, 27 Feb 2009
I was on 20 mg from age 13-18 and it completely stunted my pubertal growth. I didnt grow an inch AND I hit puberty very late. I have very very short legs, arms, and fingers. This medicine is garbage. It also caused gonadal atrophy, so now I can barley have sex with girls. Its very embarassing to talk about but its the truth so I need to get it out there. This drug has destroyed my body...
Sat, 20 Aug 2011
I'm on my 5th day taking 20 mg of Fluoxetine. Is it known to make you cry? I've gone from a practical inability to cry to crying often. Is this a normal side effect?
Mon, 18 Jan 2010
child has had problems with strattera and Fluoxetine mixing what could they be?
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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