Effexor Fatigue Side Effect Reports


The following Effexor Fatigue side effect reports were submitted by healthcare professionals and consumers.

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

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


Vomiting, Headache, Weight Increased, Nausea, Dizziness, Fatigue

This Fatigue side effect was reported by a consumer or non-health professional from US. A 51-year-old female patient (weight:NA) experienced the following symptoms/conditions: depression. The patient was prescribed Effexor Xr (dosage: 75 Mg, 2x/day), which was started on 201401. Concurrently used drugs: NA. When starting to take Effexor Xr the consumer reported the following symptoms:
  • Vomiting
  • Headache
  • Weight Increased
  • Nausea
  • Dizziness
  • Fatigue
These side effects may potentially be related to Effexor Xr.
Incorrect Dose Administered, Hallucination, Visual, Confusional State, Insomnia, Anaemia, Fatigue

This Fatigue Effexor Lp side effect was reported by a health professional from FR on Jan 13, 2014. A Female , 90 years of age, was treated with Effexor Lp. The patient presented the following health conditions:
  • Incorrect Dose Administered
  • Hallucination, Visual
  • Confusional State
  • Insomnia
  • Anaemia
  • Fatigue
. Effexor Lp dosage: 75 Mg, 1x/day. Additional drugs used at the same time:
  • Xanax (0.5 Df, 3x/day)
  • Temesta (1 Mg, 1x/day At Bedtime)
  • Ixprim (1 Df, 3x/day)
  • Ixprim (8 Df, Daily)
The patient was hospitalized.
Fatigue, Hyperhidrosis, Somnolence, Yawning, Cough, Dry Mouth

This is a Effexor Xr side effect report of a 56-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: depression, who was treated with Effexor Xr (dosage:Unk, start time: 2013), combined with: NA., and developed a serious reaction and a Fatigue side effect. The patient presented with:
  • Fatigue
  • Hyperhidrosis
  • Somnolence
  • Yawning
  • Cough
  • Dry Mouth
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Effexor Xr treatment in female patients suffering from depression, resulting in Fatigue.
Headache, Fatigue, Nausea, Off Label Use

A 49-year-old female patient (weight: NA) from US with the following symptoms: fibromyalgia,pain started Effexor treatment (dosage: Unk) on NS. Soon after starting Effexor treatment, the consumer experienced several side effects, including:
  • Headache
  • Fatigue
  • Nausea
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Effexor side effects, such as Fatigue.
Crying, Decreased Interest, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Insomnia, Feelings Of Worthlessness, Feeling Guilty

A female patient from US was prescribed and started Effexor Xr on Nov 11, 2013. Patient felt the following Effexor side effects: crying, decreased interest, asthenia, fatigue, apathy, psychiatric symptom, insomnia, feelings of worthlessness, feeling guilty Additional patient health information: Female , 30 years of age, The consumer reported the following symptoms: . Effexor Xr dosage: Unk. Concurrently used drugs: NA.
Crying, Anxiety, Decreased Interest, Depressed Mood, Fatigue, Apathy, Psychiatric Symptom, Insomnia, Disturbance In Attention

This report suggests a potential Effexor Xr Fatigue side effect(s) that can have serious consequences. A 30-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): NA and used Effexor Xr (dosage: Unk) starting NS. Soon after starting Effexor Xr the patient began experiencing various side effects, including:
  • Crying
  • Anxiety
  • Decreased Interest
  • Depressed Mood
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Insomnia
  • Disturbance In Attention
Drugs used concurrently:NA. Although Effexor Xr demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Fatigue, may still occur.
Crying, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Insomnia, Feelings Of Worthlessness, Feeling Guilty, Irritability

An adverse event was reported by a consumer or non-health professional on Nov 08, 2013 by a Female taking Effexor Xr (dosage: Unk) . Location: US , 30 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Effexor side effects: crying, asthenia, fatigue, apathy, psychiatric symptom, insomnia, feelings of worthlessness, feeling guilty, irritability. Additional medications/treatments:
Crying, Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Insomnia

This Fatigue problem was reported by a consumer or non-health professional from US. A 30-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Effexor Xr (dosage: Unk). The following drugs/medications were being taken at the same time: NA. When commencing Effexor Xr, the patient experienced the following unwanted symptoms /side effects:
  • Crying
  • Anxiety
  • Decreased Interest
  • Depressed Mood
  • Asthenia
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Insomnia
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Fatigue, may become evident only after a product is in use by the general population.
Crying, Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Headache, Apathy, Psychiatric Symptom

This is a Effexor Xr side effect report of a 30-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Effexor Xr (dosage: Unk) starting NS. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Crying
  • Anxiety
  • Decreased Interest
  • Depressed Mood
  • Asthenia
  • Fatigue
  • Headache
  • Apathy
  • Psychiatric Symptom
This opens a possibility that Effexor Xr could cause Fatigue and that some female patients may be more susceptible.
Crying, Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Headache, Apathy, Psychiatric Symptom

This Fatigue side effect was reported by a consumer or non-health professional from US on Oct 31, 2013. A female patient from US , 30 years of age, was treated with Effexor Xr. Directly after treatment started, patient experienced the unwanted or unexpected Effexor side effects: crying, anxiety, decreased interest, depressed mood, asthenia, fatigue, headache, apathy, psychiatric symptom. Effexor Xr dosage: Unk. These side effects may potentially be related to Effexor Xr.
Crying, Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Headache, Apathy, Psychiatric Symptom

This Fatigue side effect was reported by a consumer or non-health professional from US. A 30-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Effexor Xr (dosage: Unk), which was started on NS. Concurrently used drugs: NA. When starting to take Effexor Xr the consumer reported the following symptoms:
  • Crying
  • Anxiety
  • Decreased Interest
  • Depressed Mood
  • Asthenia
  • Fatigue
  • Headache
  • Apathy
  • Psychiatric Symptom
These side effects may potentially be related to Effexor Xr.
Decreased Interest, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Disturbance In Attention, Appetite Disorder, Tension, Restlessness

This Fatigue Effexor Xr side effect was reported by a consumer or non-health professional from US on Oct 31, 2013. A Female , 30 years of age, was treated with Effexor Xr. The patient presented the following health conditions:
  • Decreased Interest
  • Asthenia
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Disturbance In Attention
  • Appetite Disorder
  • Tension
  • Restlessness
. Effexor Xr dosage: Unk. Additional drugs used at the same time: NA.
Anxiety, Depressed Mood, Asthenia, Fatigue, Apathy, Irritability, Nervousness, Restlessness, Dyspnoea

This is a Effexor Xr side effect report of a 30-year-old patient (weight:NA) from US, suffering from the following symptoms/conditions: NA, who was treated with Effexor Xr (dosage:Unk, start time: NS), combined with: NA., and developed a serious reaction and a Fatigue side effect. The patient presented with:
  • Anxiety
  • Depressed Mood
  • Asthenia
  • Fatigue
  • Apathy
  • Irritability
  • Nervousness
  • Restlessness
  • Dyspnoea
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Effexor Xr treatment in patients suffering from NA, resulting in Fatigue.
Crying, Decreased Interest, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Irritability, Tension, Restlessness

A 30-year-old female patient (weight: NA) from US with the following symptoms: NA started Effexor Xr treatment (dosage: Unk) on NS. Soon after starting Effexor Xr treatment, the consumer experienced several side effects, including:
  • Crying
  • Decreased Interest
  • Asthenia
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Irritability
  • Tension
  • Restlessness
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Effexor Xr side effects, such as Fatigue.
Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Feelings Of Worthlessness, Feeling Guilty

A female patient from US was prescribed and started Effexor Xr on Oct 30, 2013. After Effexor was administered, patient encountered several Effexor side effects: anxiety, decreased interest, depressed mood, asthenia, fatigue, apathy, psychiatric symptom, feelings of worthlessness, feeling guilty Additional patient health information: Female , 30 years of age, The consumer reported the following symptoms: . Effexor Xr dosage: Unk. Concurrently used drugs: NA.
Anxiety, Decreased Interest, Depressed Mood, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Feelings Of Worthlessness, Feeling Guilty

This report suggests a potential Effexor Xr Fatigue side effect(s) that can have serious consequences. A 30-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): NA and used Effexor Xr (dosage: Unk) starting NS. Soon after starting Effexor Xr the patient began experiencing various side effects, including:
  • Anxiety
  • Decreased Interest
  • Depressed Mood
  • Asthenia
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Feelings Of Worthlessness
  • Feeling Guilty
Drugs used concurrently:NA. Although Effexor Xr demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Fatigue, may still occur.
Crying, Anxiety, Decreased Interest, Depressed Mood, Fatigue, Apathy, Psychiatric Symptom, Insomnia, Feeling Guilty

An adverse event was reported by a consumer or non-health professional on Oct 30, 2013 by a male taking Effexor Xr (dosage: Unk) . Location: US , 30 years of age, patient began experiencing various side effects, including: Patient felt the following Effexor side effects: crying, anxiety, decreased interest, depressed mood, fatigue, apathy, psychiatric symptom, insomnia, feeling guilty. Additional medications/treatments:
Decreased Interest, Asthenia, Fatigue, Apathy, Psychiatric Symptom, Disturbance In Attention, Appetite Disorder, Tension, Restlessness

This Fatigue problem was reported by a consumer or non-health professional from US. A 30-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Effexor Xr (dosage: Unk). The following drugs/medications were being taken at the same time: NA. When commencing Effexor Xr, the patient experienced the following unwanted symptoms /side effects:
  • Decreased Interest
  • Asthenia
  • Fatigue
  • Apathy
  • Psychiatric Symptom
  • Disturbance In Attention
  • Appetite Disorder
  • Tension
  • Restlessness
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Fatigue, may become evident only after a product is in use by the general population.
Fatigue, Asthenia, Headache, Insomnia, Disturbance In Attention, Irritability, Appetite Disorder

This is a Effexor Xr side effect report of a 30-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Effexor Xr (dosage: Unk) starting NS. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Fatigue
  • Asthenia
  • Headache
  • Insomnia
  • Disturbance In Attention
  • Irritability
  • Appetite Disorder
This opens a possibility that Effexor Xr could cause Fatigue and that some female patients may be more susceptible.
Headache, Musculoskeletal Stiffness, Fatigue, Balance Disorder, Malaise, Insomnia, Vomiting Projectile

This Fatigue side effect was reported by a consumer or non-health professional from US on Nov 04, 2013. A female patient from US , 84 years of age, weighting 160.0 lb, was diagnosed with and was treated with Effexor Xr. Patient felt the following Effexor side effects: headache, musculoskeletal stiffness, fatigue, balance disorder, malaise, insomnia, vomiting projectile. Effexor Xr dosage: 75 Mg, Daily. These side effects may potentially be related to Effexor Xr.
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DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Effexor Fatigue Causes and Reviews


Everyone feels tired now and then. Sometimes you may just want to stay in bed. But, after a good night's sleep, most people feel refreshed and ready to face a new day. If you continue to feel tired for weeks, it's time to see your doctor. He or she may be able to help you find out what's causing your Fatigue and recommend ways to relieve it.

Fatigue itself is not a disease. Medical problems, treatments, and personal habits can add to Fatigue. These include

  • Taking certain medicines, such as antidepressants, antihistamines, and medicines for nausea and pain
  • Having medical treatments, like chemotherapy and radiation
  • Recovering from major surgery
  • Anxiety, stress, or depression
  • Staying up too late
  • Drinking too much alcohol or too many caffeinated drinks
  • Pregnancy

One disorder that causes extreme Fatigue is chronic Fatigue syndrome (CFS). This Fatigue is not the kind of tired feeling that goes away after you rest. Instead, it lasts a long time and limits your ability to do ordinary daily activities.

NIH: National Institute on Aging


Effexor Fatigue Reviews

Sun, 06 May 2012

I'm experiencing severe dizyness almost do face plants to the ground a dozen times a day. Can't focus when tryin to read.
Always confused and forgetfull .
about to loose my job if this shit continues.

Tue, 02 Oct 2012

all of the above plus hives massive weight gain....An evil drug...should be taken off the market!!

Mon, 02 May 2011

Thank you everyone. I am definitely going to tell my shrink that I need to get off Effexor
immediately. Does anyone out there also take lithium and temazapam(sleeping pill)?

Thu, 07 Jun 2012

Does anyone else feel that Effexor XR doesn't work as well when they are either having a bout of influenza or herpes, or another viral infection? I get brain zaps even on my normal dosage (150mg/day) if I am experiencing a cold or herpes outbreak.

Wed, 04 Nov 2009
tendon tears Effexor?
Tue, 12 May 2009
Effexor raised my blood presure alot ,I had extreme painful headaches,rash that started on my face which was horrible,then spread to my chest,my neck was beat red I itched so badly.I think docotrs need to be more educated on this med before giveing it out so quickly.
Sun, 17 May 2009
Effexor was horrible for me...as soon as I started it I started having panic attacks worse than ever (supposed to help them) scary bad dreams, waking up in a sweat and not knowing who I was, then depression. The first day I expeirenced the panic attacks fast heartrate, I called my Dr. and he assured me that it could not have taken effect that fast, not true! He told me to keep takin the medicine, I trusted his word until I ended up in the hospital feeling like I was loosing my mind. I ended up going into a very deep depression. This was many years ago but I read some of the post and thought I would share my experience. If your told that there is no way that you could be feeling any interactions on the first day, use your own judgement, I trusted my Dr's word and I almost died.
Sat, 11 Jun 2011
I Lost my children because of this drug, i almost took my own life and a life of someone very close to me, I also have liver damage, who do these people think they are making these and giving them to people?
Wed, 02 Dec 2009
Effexor amp; Pristiq is poison - I would know, I started taking it at 16 yrs old, instead of counselling I was given Effexor by a 'psychiatrist drug dealer' I was never offered counselling. I spent of $25,000 on this medication in my lifetime. Discontinuation Syndrome has been my worst nightmare. The brain zaps are disgusting. I wish I could get all of the people who hate venlafaxine together to sue these pharmaceutical companies. They have earnt billions of dollars off the suffering of us and we are the only ones who pay.
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Anxiety (625)
Depression (552)
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Condition Aggravated (471)
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Intentional Overdose (136)
Irritability (135)
Abnormal Dreams (123)
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Loss Of Consciousness (111)
Panic Attack (111)
Arthralgia (110)
Nightmare (109)
Disorientation (108)
Off Label Use (106)
Overdose (106)
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