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Flexeril Lethargy Side Effects

Flexeril Lethargy Side Effect Reports


The following Flexeril Lethargy side effect reports were submitted by healthcare professionals and consumers.

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

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



Somnolence, Decreased Appetite, Vision Blurred, Coordination Abnormal, Lethargy, Loss Of Libido, Muscular Weakness, Disturbance In Attention, Nightmare

This Lethargy side effect was reported by a consumer or non-health professional from US. A 32-year-old patient (weight:NA) experienced the following symptoms/conditions: muscle strain. The patient was prescribed Flexeril (dosage: NA), which was started on Sep 14, 2013. Concurrently used drugs: NA. When starting to take Flexeril the consumer reported the following symptoms:
  • Somnolence
  • Decreased Appetite
  • Vision Blurred
  • Coordination Abnormal
  • Lethargy
  • Loss Of Libido
  • Muscular Weakness
  • Disturbance In Attention
  • Nightmare
These side effects may potentially be related to Flexeril.
Lethargy, Depression

This Lethargy Flexeril side effect was reported by a consumer or non-health professional from UNITED STATES on Apr 01, 2011. A male , 63 years of age, was treated with Flexeril. The patient presented the following health conditions:
  • Lethargy
  • Depression
. Flexeril dosage: NA. Additional drugs used at the same time:
  • Ibuprofen
  • Xanax
  • Methylphanidate Hydrochloride (10 Mg)
Joint Swelling, Asthenia, Oedema Peripheral, Lethargy, Fatigue

This is a Flexeril side effect report of a 56-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: insomnia, who was treated with Flexeril (dosage:NA, start time: Sep 22, 2011), combined with:
  • Trazodone Hcl
  • Red Yeast
  • Fentanyl (100mcg Patch Every 3 Days)
  • Ginko Biloba
  • Prednisone Tab (Taper)
  • Humira
  • Wellbutrin Xl
  • Prozac
, and developed a serious reaction and a Lethargy side effect. The patient presented with:
  • Joint Swelling
  • Asthenia
  • Oedema Peripheral
  • Lethargy
  • Fatigue
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Flexeril treatment in female patients suffering from insomnia, resulting in Lethargy.

Urinary Retention, Calculus Ureteric, Rash, Urinary Tract Infection, Hypotension, Lethargy, Cystitis, Kidney Infection, Enterococcal Infection

A 60-year-old patient (weight: NA) from UNITED STATES with the following symptoms: muscle spasms,multiple sclerosis started Flexeril treatment (dosage: NA) on Jan 01, 2011. Soon after starting Flexeril treatment, the consumer experienced several side effects, including:
  • Urinary Retention
  • Calculus Ureteric
  • Rash
  • Urinary Tract Infection
  • Hypotension
  • Lethargy
  • Cystitis
  • Kidney Infection
  • Enterococcal Infection
. Concurrently used drugs:
  • Tysabri
  • Tysabri
  • Lisinopril
  • Trileptal
  • Sertraline Hydrochloride
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Flexeril side effects, such as Lethargy.
Urinary Tract Infection, Lethargy, Kidney Infection, Hypotension, Cystitis, Calculus Ureteric, Urinary Retention, Rash

A patient from UNITED STATES was prescribed and started Flexeril on Feb 23, 2011. Patient felt the following Flexeril side effects: urinary tract infection, lethargy, kidney infection, hypotension, cystitis, calculus ureteric, urinary retention, rash Additional patient health information: male , 60 years of age, weighting 174.2 lb, The consumer reported the following symptoms: was diagnosed with and. Flexeril dosage: NA. Concurrently used drugs:
  • Tysabri
  • Sertraline
  • Tysabri
  • Trileptal
  • Lisinopril
The patient was hospitalized.
Agitation, Blood Pressure Systolic Increased, Confusional State, Grand Mal Convulsion, Heart Rate Increased, Lethargy, Respiratory Rate Increased, Speech Disorder

This report suggests a potential Flexeril Lethargy side effect(s) that can have serious consequences. A 23-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Flexeril (dosage: NA) starting NS. Soon after starting Flexeril the patient began experiencing various side effects, including:
  • Agitation
  • Blood Pressure Systolic Increased
  • Confusional State
  • Grand Mal Convulsion
  • Heart Rate Increased
  • Lethargy
  • Respiratory Rate Increased
  • Speech Disorder
Drugs used concurrently:
  • Ultram
  • Effexor
The patient was hospitalized. Although Flexeril demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Lethargy, may still occur.
Depressed Level Of Consciousness, Hypotension, Lethargy, Pneumonia

An adverse event was reported by a health professional on Apr 18, 2007 by a Female taking Flexeril (dosage: NA) was diagnosed with and. Location: UNITED STATES , weighting 261.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Flexeril side effects: depressed level of consciousness, hypotension, lethargy, pneumonia. Additional medications/treatments:
Associated medications used:
  • Fentanyl
  • Tenormin
  • Lioresal
  • Klonopin
  • Methadone Hcl
  • Protonix
  • Ibuprofen
  • Albuterol
The patient was hospitalized.
Depressed Level Of Consciousness, Hypotension, Lethargy, Pneumonia

This Lethargy problem was reported by a health professional from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): muscle spasms,breakthrough pain,hypertension.On NS a consumer started treatment with Flexeril (dosage: NA). The following drugs/medications were being taken at the same time:
  • Fentanyl
  • Tenormin
  • Lioresal
  • Klonopin
  • Methadone Hcl
  • Protonix
  • Ibuprofen
  • Albuterol
When commencing Flexeril, the patient experienced the following unwanted symptoms /side effects:
  • Depressed Level Of Consciousness
  • Hypotension
  • Lethargy
  • Pneumonia
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Lethargy, may become evident only after a product is in use by the general population.
Dizziness, Hallucination, Lethargy, Mental Status Changes, Urinary Tract Infection

This is a Flexeril side effect report of a 58-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Flexeril (dosage: NA) starting NS. Concurrently used drugs:
  • Zyprexa
  • Protonix
  • Trazodone Hcl
  • Ativan
  • Zyrtec
  • Seroquel
  • Diovan
  • Combivent
Soon after that, the consumer experienced the following of symptoms:
  • Dizziness
  • Hallucination
  • Lethargy
  • Mental Status Changes
  • Urinary Tract Infection
The patient was hospitalized. This opens a possibility that Flexeril could cause Lethargy and that some female patients may be more susceptible.

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

Flexeril Lethargy Causes and Reviews


We are sorry, but no medical information on this topic currently exists in our database. Our articles are updated often, please revisit soon.


Flexeril Lethargy Reviews

Sat, 09 Jan 2010
My mother, 87, was given Flexeril for a tight shoulder muscle. After 7 pills is having hallucinations. Mentally sharp otherwise. Last pill was on 12/29/2009. How long can we expect these? She is an invalid.
Wed, 31 Mar 2010
anxiety, anger, and exhaustion
Mon, 18 Apr 2011
I was taking Flexeril after I was diagnosed with a rib contusion following heavy lifting. I am taking Lexapro, Adderall and Trazadone already for A.D.D. depression and sleep deprivation. The Flexeril made me extremely tired, irritable, so much so that after a 24 hour period, I was nearly suicidal, possibly homicidal. I threw the medication away after reoccuring this feeling several times.
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Pain (102)
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Cerebrovascular Accident (9)
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Lethargy (9)
Diarrhoea (8)
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Vision Blurred (8)
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Myocardial Infarction (7)

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