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Flexeril Muscular Weakness Side Effects

Flexeril Muscular Weakness Side Effect Reports


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

This information will help you understand how side effects, such as Muscular Weakness, 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 Muscular Weakness 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.
Thermal Burn, Gait Disturbance, Laceration, Feeling Abnormal, Breast Injury, Road Traffic Accident, Visual Impairment, Muscular Weakness, Lumbar Vertebral Fracture

This Muscular Weakness Flexeril side effect was reported by a consumer or non-health professional from UNITED STATES on Jun 05, 2012. A Female , weighting 230.2 lb, was diagnosed with and was treated with Flexeril. The patient presented the following health conditions:
  • Thermal Burn
  • Gait Disturbance
  • Laceration
  • Feeling Abnormal
  • Breast Injury
  • Road Traffic Accident
  • Visual Impairment
  • Muscular Weakness
  • Lumbar Vertebral Fracture
. Flexeril dosage: 10 Mg, Unk. Additional drugs used at the same time:
  • Gilenya (0.5 Mg, Qd)
The patient was hospitalized.
Activities Of Daily Living Impaired, Movement Disorder, Chills, Asthenia, Mobility Decreased, Hypoaesthesia, Muscular Weakness

This is a Flexeril side effect report of a 66-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Flexeril (dosage:NA, start time: Mar 26, 2012), combined with:
  • Interferon Beta-1b (8 Miu, Qod, Subcutaneous)
  • Aspirin (2 Df)
, and developed a serious reaction and a Muscular Weakness side effect. The patient presented with:
  • Activities Of Daily Living Impaired
  • Movement Disorder
  • Chills
  • Asthenia
  • Mobility Decreased
  • Hypoaesthesia
  • Muscular Weakness
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 NA, resulting in Muscular Weakness.

Hypotension, Muscular Weakness, Sepsis, Neutropenic Colitis, Hypophagia

A 62-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Flexeril treatment (dosage: NA) on Oct 21, 2011. Soon after starting Flexeril treatment, the consumer experienced several side effects, including:
  • Hypotension
  • Muscular Weakness
  • Sepsis
  • Neutropenic Colitis
  • Hypophagia
. Concurrently used drugs:
  • Percocet
  • Brentuximab Vedotin (brentuximab Vedotin) Injection (1.8 Mg/kg, Q21d, Intravenous)
  • Norvasc
  • Prednisone Tab (100 Mg, Qcycle, Oral)
  • Neurontin
  • Doxycycline (doxycycline Hyclate)
  • Hydrochlorothiazide (hydrochlorothaizide)
  • Metoprolol Tartrate
This finding indicates that some patients can be more vulnerable to developing Flexeril side effects, such as Muscular Weakness.
Speech Disorder, Respiratory Distress, Decreased Appetite, Muscular Weakness, Sialoadenitis, Diarrhoea, Chronic Hepatic Failure

A female patient from UNITED STATES was prescribed and started Flexeril on Sep 20, 2011. Patient felt the following Flexeril side effects: speech disorder, respiratory distress, decreased appetite, muscular weakness, sialoadenitis, diarrhoea, chronic hepatic failure Additional patient health information: Female , 60 years of age, The consumer reported the following symptoms: was diagnosed with and. Flexeril dosage: 10 Mg, Unk. Concurrently used drugs:
  • Lactulose
  • Nexavar (200 Mg, Qd)
  • Nexavar (200 Mg, Bid)
Lymphadenopathy, Ecchymosis, Off Label Use, Muscular Weakness, Swelling

This report suggests a potential Flexeril Muscular Weakness side effect(s) that can have serious consequences. A 47-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Flexeril (dosage: NA) starting Mar 07, 2011. Soon after starting Flexeril the patient began experiencing various side effects, including:
  • Lymphadenopathy
  • Ecchymosis
  • Off Label Use
  • Muscular Weakness
  • Swelling
Drugs used concurrently:
  • Lovaza
  • Multi-vitamin
  • Neurontin
  • Tramadol Hcl
  • Skelaxin
  • Dexamethasone Sodium Phosphate (Iontophoresis)
  • Celexa
  • Naprosyn
Although Flexeril demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Muscular Weakness, may still occur.
Muscular Weakness, Paraesthesia

An adverse event was reported by a consumer or non-health professional on Dec 10, 2007 by a Female taking Flexeril (dosage: NA) . Location: UNITED STATES , weighting 160.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Flexeril side effects: muscular weakness, paraesthesia. Additional medications/treatments:
Associated medications used:
  • Ultram
Abasia, Dysstasia, Muscular Weakness

This Muscular Weakness problem was reported by a consumer or non-health professional from UNITED STATES. A 35-year-old patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Flexeril (dosage: 10 Mg Once Daily Po). The following drugs/medications were being taken at the same time: NA. When commencing Flexeril, the patient experienced the following unwanted symptoms /side effects:
  • Abasia
  • Dysstasia
  • Muscular Weakness
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Muscular Weakness, may become evident only after a product is in use by the general population.

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

Flexeril Muscular Weakness Causes and Reviews


Myasthenia gravis is a disease that causes weakness in your voluntary muscles. These are the muscles that you control. For example, you may have weakness in the muscles for eye movement, facial expressions, and swallowing. You can also have weakness in other muscles. This weakness gets worse with activity, and better with rest.

Myasthenia gravis is an autoimmune disease. Your body's immune system makes antibodies that block or change some of the nerve signals to your muscles. This makes your muscles weaker.

Other conditions can cause muscle weakness, so myasthenia gravis can be hard to diagnose. Tests used to make a diagnosis include blood, nerve, muscle, and imaging tests.

With treatment, the muscle weakness often gets much better. Medicines can help improve nerve-to-muscle messages and make muscles stronger. Other drugs keep your body from making so many abnormal antibodies. These medicines can have major side effects, so they should be used carefully. There are also treatments which filter abnormal antibodies from the blood or add healthy antibodies from donated blood. Sometimes, surgery to take out the thymus gland helps.

Some people with myasthenia gravis go into remission. This means that they do not have symptoms. The remission is usually temporary, but sometimes it can be permanent.

NIH: National Institute of Neurological Disorders and Stroke


Flexeril Muscular Weakness 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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Top Flexeril Side Effects

Pain (103)
Pulmonary Embolism (74)
Fatigue (71)
Nausea (70)
Fall (68)
Pain In Extremity (66)
Dyspnoea (66)
Oedema Peripheral (65)
Feeling Abnormal (65)
Depression (65)
Somnolence (64)
Headache (64)
Muscle Spasms (64)
Overdose (63)
Dizziness (61)
Deep Vein Thrombosis (54)
Anxiety (50)
Convulsion (48)
Confusional State (46)
Asthenia (44)
Back Pain (13)
Loss Of Consciousness (11)
Hypertension (11)
Heart Rate Increased (11)
Abdominal Pain Upper (10)
Amnesia (10)
Malaise (10)
Injury (10)
Blood Pressure Increased (10)
Cerebrovascular Accident (9)
Cardiac Failure (9)
Death (9)
Injection Site Pain (9)
Weight Increased (9)
Pneumonia (9)
Lethargy (9)
Diarrhoea (8)
Completed Suicide (8)
Muscular Weakness (8)
Urinary Tract Infection (8)
Vision Blurred (8)
Vomiting (8)
Incorrect Dose Administered (7)
Hallucination (7)
Liver Disorder (7)
Hypotension (7)
Paraesthesia (7)
Suicidal Ideation (7)
Rhabdomyolysis (7)
Myocardial Infarction (7)

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