Norflex Side Effects

Common Norflex Side Effects

The most commonly reported Norflex side effects (click to view or check a box to report):

Pulmonary Embolism (3)
Fall (2)
Hypersensitivity (2)
Dyspnoea (2)
Urinary Retention (2)
Pain (2)
Injury (2)
Lumbar Vertebral Fracture (1)
Paranasal Sinus Hypersecretion (1)
Pain In Extremity (1)
Pyrexia (1)
Lung Disorder (1)
Withdrawal Syndrome (1)
Obstructive Airways Disorder (1)
Oedema Peripheral (1)
Ovarian Cyst (1)
Neoplasm (1)
Nasopharyngitis (1)
Musculoskeletal Discomfort (1)
Mental Disorder (1)

➢ More

If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

Norflex Side Effects Reported to FDA

The following Norflex reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.

The appearance of Norflex on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.
Renal Failure Acute, Blood Creatinine Increased
This is a report of a 50-year-old male patient (weight: NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Norflex (orphenadrine Citrate)(100 Milligram, Tablets (dosage: NA, start time: Mar 07, 2011), combined with:
  • Folic Acid (folic Acid)(1 Milligram, Tablets)
  • Lisinopril (lisinopril)(2.5 Milligram, Tablets)
and developed a serious reaction and side effect(s). The consumer presented with:
  • Renal Failure Acute
  • Blood Creatinine Increased
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Norflex (orphenadrine Citrate)(100 Milligram, Tablets treatment in male patients, resulting in renal failure acute side effect. The patient was hospitalized.

Ear Infection
This report suggests a potential Norflex Ear Infection side effect(s) that can have serious consequences. A female patient (weight: NA) from UNITED STATES was diagnosed with the following symptoms/conditions: inflammation,thyroidectomy,nerve injury and used Norflex (dosage: Unk) starting Feb 01, 2012. Soon after starting Norflex the patient began experiencing various side effects, including:
  • Ear Infection
Drugs used concurrently:
  • Levothyroxine (Unk)
  • Lyrica (Unk)
  • Cymbalta (Unk)
  • Lipitor (20 Mg, 1x/day)
  • Potassium (Unk)
Although Norflex demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as ear infection, may still occur.

Pulmonary Embolism
This Pulmonary Embolism problem was reported by a physician from UNITED STATES. A 21-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On Feb 22, 2011 this consumer started treatment with Norflex (dosage: 60 Mg, Unk). The following drugs were being taken at the same time:
  • Toradol (60 Mg, Unk)
  • Multi-vitamin (1 Tablet Daily)
  • Yaz
  • Fastin (30 Mg, Unk)
  • Vicodin (Unk)
When commencing Norflex, the patient experienced the following unwanted symptoms/side effects:
  • Pulmonary Embolism
The patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as pulmonary embolism, may become evident only after a product is in use by the general population.

Injection Site Pain, Urticaria, Nasopharyngitis, Paranasal Sinus Hypersecretion, Blood Pressure Increased, Pyrexia, Ovarian Cyst
This is a report of a 45-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Norflex (dosage: NA) starting Jun 01, 2011. Concurrently used drugs:
  • Humira (Twice Weekly, Every Monday And Thursday)
  • Humira
  • Muscle Relaxants
Soon after that, the consumer experienced the following side effects:
  • Injection Site Pain
  • Urticaria
  • Nasopharyngitis
  • Paranasal Sinus Hypersecretion
  • Blood Pressure Increased
  • Pyrexia
  • Ovarian Cyst
This opens a possibility that Norflex treatment could cause the above reactions, including injection site pain, and some female subjects may be more susceptible.

Withdrawal Syndrome, Hypersensitivity, Urinary Retention, Tremor, Agitation, Restlessness, Lethargy, Injury
A 38-year-old female patient (weight: NA) from UNITED STATES with the following symptoms/conditions: NA started Norflex treatment (dosage: NA) on NS. Soon after starting Norflex treatment, the subject experienced various side effects, including:
  • Withdrawal Syndrome
  • Hypersensitivity
  • Urinary Retention
  • Tremor
  • Agitation
  • Restlessness
  • Lethargy
  • Injury
Concurrently used drugs:
  • Celebrex (In Mrng)
  • Lexapro
  • Zolpidem (At Nyt)
  • Abilify (2mg Daily For 2 Days Then 5mg)
  • Tramadol Hcl (Pill)
  • Topamax (A Supper Time 20mg)
  • Clonazepam (1df-0.5 Units Nt Specified At Nyt)
The patient was hospitalized. This finding indicates that some female patients could be more vulnerable to Norflex.

Pulmonary Embolism, Injury, Pain
A 24-year-old female patient from UNITED STATES (weight: NA) experienced symptoms, such as: NA and was treated with Norflex(dosage: NA). The treatment was initiated on Jun 01, 2009. After that a consumer reported the following side effect(s):
  • Pulmonary Embolism
  • Injury
  • Pain
Concurrently used drugs, which potentially could have contributed to side effect(s) or affected Norflex efficacy:
  • Flexeril
  • Yaz (Unk)
  • Toradol
  • Naproxen
  • Benadryl

Insomnia, Urinary Retention, Somnolence, Dry Mouth, Breath Odour
In this report, Norflex was administered for the following condition: muscle strain.A 73-year-old female consumer from UNITED STATES (weight: NA) started Norflex treatment (dosage: 100 Mgs) on Jul 07, 2011.Sometime after starting the treatment, the patient complained of the following side effect(s):
  • Insomnia
  • Urinary Retention
  • Somnolence
  • Dry Mouth
  • Breath Odour
A possible interaction with other drugs could have contributed to this reaction: NA.Establishing a causal relationship between a specific drug and consumer's side effects is complex, but it is possible that in this report Norflex treatment could be related to the listed above side effect(s).

Abdominal Pain Upper, Diarrhoea, Lung Disorder
This is a report of the following Norflex side effect(s):
  • Abdominal Pain Upper
  • Diarrhoea
  • Lung Disorder
A male patient from UNITED STATES (weight: NA) presented with the following condition: pain,oropharyngeal pain and received a treatment with Norflex (dosage: 100mg 2 A Day) starting: Sep 09, 2010.The following concurrently used drugs could have generated interactions:
  • Amoxicillin And Clavulanate Potassium (875mg/ 125mg Twice Daily)
  • Amoxicillin And Clavulanate Potassium (875mg/ 125mg Twice Daily)
The patient was hospitalized.This report suggests that a Norflex treatment could be associated with the listed above side effect(s).

Limb Discomfort, Fall, Arthralgia
This Norflex report was submitted by a female consumer from UNITED STATES (weight: NA). The patient was diagnosed with: back pain and Norflex was administered (dosage: Unk) starting: Feb 01, 2011. The consumer developed a set of symptoms:
  • Limb Discomfort
  • Fall
  • Arthralgia
Other drugs used simultaneously:
  • Vistaril (Unk)
  • Vistaril
Those unexpected symptoms could be linked to a Norflex treatment, however establishing a potential drug-safety problem requires a more detailed clinical analysis.

Pain In Extremity, Mental Disorder, Headache, Deep Vein Thrombosis, Dyspnoea, Oedema Peripheral, Pulmonary Embolism
This is a report of a possible correlation between Norflex use and the following symptoms/side effect(s):
  • Pain In Extremity
  • Mental Disorder
  • Headache
  • Deep Vein Thrombosis
  • Dyspnoea
  • Oedema Peripheral
  • Pulmonary Embolism
which could contribute to an assessment of Norflex risk profile.A 32-year-old female consumer from UNITED STATES (weight: NA) was suffering from NA and was treated with Norflex (dosage: NA) starting Apr 01, 2007.Other concurrent medications:
  • Nonsteroidals
  • Jasmine
  • Yasmin (Unk Unk, Qd)
  • Anaprox (It Will Need To Stop When Her Inr Is Therapeutic)
  • Flexeril
The patient was hospitalized.

Swelling Face, Hypersensitivity, Dyspnoea, Obstructive Airways Disorder
A female patient from UNITED STATES (weight: NA) presented with the following symptoms: fibromyalgia,diabetes mellitus and after a treatment with Norflex (dosage: 100 Mg, 2x/day) experienced the following side effect(s):
  • Swelling Face
  • Hypersensitivity
  • Dyspnoea
  • Obstructive Airways Disorder
The treatment was started on Mar 01, 2010. Norflex was used in combination with the following drugs:
  • Sitagliptin (100 Mg, 1x/day)
  • Effexor (100 Mg, 1x/day)
  • Sectral (Unk)
  • Albuterol Sulfate (90 Ug, As Needed)
  • Levothyroxine (150 Ug, 1x/day)
  • Benicar Hct (40/25 Mg)
  • Zyrtec (Unk)
  • Benadryl (Unk)
This report could alert potential Norflex consumers.

Clavicle Fracture, Confusional State, Delirium, Fall, Hallucination, Lumbar Vertebral Fracture, Spinal Compression Fracture, Thoracic Vertebral Fracture
In this report, a 86-year-old male patient from UNITED STATES (weight: NA) was affected by a possible Norflex side effect.The patient was diagnosed with muscle strain. After a treatment with Norflex (dosage: NA, start date: NS), the patient experienced the following side effect(s):
  • Clavicle Fracture
  • Confusional State
  • Delirium
  • Fall
  • Hallucination
  • Lumbar Vertebral Fracture
  • Spinal Compression Fracture
  • Thoracic Vertebral Fracture
The following simultaneously used drugs could have led to this reaction: NA.The patient was hospitalized.The findings here stress that side effects should be taken into consideration when evaluating a Norflex treatment.

Hypoaesthesia, Musculoskeletal Discomfort, Neoplasm, Pain
This is a report of a 40-year-old male patient from FINLAND (weight: NA), who used Norflex (dosage: (60 Mg, Single Dose)) for a treatment of back pain. After starting a treatment on Nov 26, 2006, the patient experienced the following side effect(s):
  • Hypoaesthesia
  • Musculoskeletal Discomfort
  • Neoplasm
  • Pain
The following drugs could possibly have interacted with the Norflex treatment
  • Voltaren ((75 Mg, Single Dose))
  • Burana
The patient was hospitalized and became disabled.Taken together, these observations suggest that a Norflex treatment could be related to side effect(s), such as Hypoaesthesia, Musculoskeletal Discomfort, Neoplasm, Pain.

Alcohol Use, Cardiac Failure Congestive
This alcohol use side effect was reported by a physician from UNITED STATES. A 48-year-old female patient (weight:NA) experienced the following symptoms/conditions: back pain. The patient was prescribed Norflex (dosage: (100 Mg, 2 In 1 Day(s)), Oral), which was started on Nov 01, 1999. Concurrently used drugs:
  • Xanax
  • Restoril
When starting to take Norflex the consumer reported the following symptoms:
  • Alcohol Use
  • Cardiac Failure Congestive
These side effects may potentially be related to Norflex.

Angina Pectoris, Anxiety
This is a Norflex side effect report of a 65-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: back disorder,neck injury,surgery, who was treated with Norflex (dosage:100 Mg 1 In 1 Day(s), Oral, start time: Oct 19, 2004), combined with: NA., and developed a serious reaction and a angina pectoris side effect. The patient presented with:
  • Angina Pectoris
  • Anxiety
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Norflex treatment in female patients suffering from back disorder,neck injury,surgery, resulting in angina pectoris.

Keep Track of Side Effects

Note Your Observations

It is really important to keep of your symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:
    Side Effects Scale Date & Time Other Medicine(s) or Treatment(s)
    Scale: 1 = very mild to 10 = very bad

    You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Discuss Norflex Side Effects

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    Norflex Safety Alerts, Active Ingredients, Usage Information

    Norflex Dosage, Warnings, Usage.

    Side Effects reported to FDA: 15

    Norflex safety alerts: No

    Reported deaths: 1

    Reported hospitalizations: 7

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