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Myonal Side Effects

Common Myonal Side Effects


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

Hypoglycaemia (4)
Cold Sweat (2)
Epilepsy (2)
Abdominal Pain Upper (2)
Joint Dislocation (2)
Insomnia (2)
Hepatic Function Abnormal (2)
Renal Failure (1)
Sensory Disturbance (1)
Respiratory Tract Oedema (1)
White Blood Cell Count Increased (1)
Menopausal Symptoms (1)
Weight Increased (1)
Pneumonia Aspiration (1)
Purpura (1)
Pyrexia (1)
Palpitations (1)
Ovarian Cancer (1)
Muscular Weakness (1)
Muscle Spasms (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.

Myonal Side Effects Reported to FDA

The following Myonal 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 Myonal 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.
Face Oedema, Weight Increased, Urinary Retention
This is a report of a 23-year-old female patient (weight: NA) from JAPAN, suffering from the following symptoms/conditions: NA, who was treated with Myonal (dosage: 2 Tablets/day, start time: Apr 19, 2012), combined with:
  • Celebrex (200 Mg, 1x/day)
  • Loxonin (2 Tapes/day)
and developed a serious reaction and side effect(s). The consumer presented with:
  • Face Oedema
  • Weight Increased
  • Urinary Retention
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Myonal treatment in female patients, resulting in face oedema side effect.

Dermatitis Bullous
This report suggests a potential Myonal Dermatitis Bullous side effect(s) that can have serious consequences. A 77-year-old male patient (weight: NA) from JAPAN was diagnosed with the following symptoms/conditions: spinal osteoarthritis and used Myonal (dosage: Unk) starting Feb 13, 2012. Soon after starting Myonal the patient began experiencing various side effects, including:
  • Dermatitis Bullous
Drugs used concurrently:
  • Celebrex (100 Mg,uid/qd)
  • Celebrex (100 Mg, 2x/day)
  • Ketoprofen (Unk)
  • Rebamipide (Unk)
Although Myonal demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as dermatitis bullous, may still occur.

Malignant Peritoneal Neoplasm, Malignant Ascites, Malignant Pleural Effusion, Ovarian Cancer
This Malignant Peritoneal Neoplasm, Malignant Ascites, Malignant Pleural Effusion, Ovarian Cancer problem was reported by a physician from JAPAN. A female patient (weight: NA) was diagnosed with the following symptoms/conditions: muscle tightness,prophylaxis,rheumatoid arthritis. On Oct 23, 2009 this consumer started treatment with Myonal (dosage: NA). The following drugs were being taken at the same time:
  • Selbex
  • Actemra
  • Loxonin
  • Bredinin
  • Infree
  • Isoniazid
  • Methycobal
When commencing Myonal, the patient experienced the following unwanted symptoms/side effects:
  • Malignant Peritoneal Neoplasm
  • Malignant Ascites
  • Malignant Pleural Effusion
  • Ovarian Cancer
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 malignant peritoneal neoplasm, may become evident only after a product is in use by the general population.

Jaundice
This is a report of a 76-year-old female patient (weight: NA) from JAPAN. The patient developed the following symptoms/conditions: back pain,type 2 diabetes mellitus,neurosis and was treated with Myonal (dosage: 50 Mg, 2x/day) starting Apr 22, 2011. Concurrently used drugs:
  • Alogliptin Benzoate (12.5 Mg, 1x/day)
  • Diazepam (5 Mg, 1x/day)
  • Lyrica (100 Mg, 1x/day)
  • Prednisolone (2 Mg, 2x/day)
  • Folic Acid (5 Mg, 1x/day)
  • Aspara K (600 Mg, 2x/day)
  • Uniphyl (100 Mg, 1x/day)
  • Rabeprazole Sodium (10 Mg, 1x/day)
Soon after that, the consumer experienced the following side effects:
  • Jaundice
The patient was hospitalized. This opens a possibility that Myonal treatment could cause the above reactions, including jaundice, and some female subjects may be more susceptible.


Purpura, Hypoglycaemia, Muscle Spasms
A 81-year-old patient (weight: NA) from JAPAN with the following symptoms/conditions: NA started Myonal (epirizole Hydrochloride) (epirizole Hydrochloride) treatment (dosage: NA) on Jan 18, 2011. Soon after starting Myonal (epirizole Hydrochloride) (epirizole Hydrochloride) treatment, the subject experienced various side effects, including:
  • Purpura
  • Hypoglycaemia
  • Muscle Spasms
Concurrently used drugs:
  • Shakuyakukanzoutou (herbal Extract Nos) (granules) (herbal Extract Nos
  • Excelase (enzymes Nos) (tablet) (enzymes Nos)
  • Halfdigoxin (digoxin) (digoxin)
  • Protecadin (lafutidine) (tablet) (lafutidine)
  • Ubilon (tibolone) (tablet) (tibolone)
  • Cardenalin (doxazosin Mesilate) (doxazosin Mesilate)
  • Stronger Neo-minophagen C (cysteine, Aminoacetic Acid, Glycyrrhizic Ac
  • Magmitt (magnesium Oxide) (tablet) (magnesium Oxide)
This finding indicates that some patients could be more vulnerable to Myonal (epirizole Hydrochloride) (epirizole Hydrochloride).

Blood Pressure Systolic Increased, Cold Sweat, Hypoaesthesia, Cervical Spinal Stenosis, Blood Glucose Increased, Menopausal Symptoms, Cerebral Infarction, Hypoglycaemia, Hunger
A 71-year-old female patient from JAPAN (weight: NA) experienced symptoms, such as: spinal osteoarthritis and was treated with Myonal(dosage: 3 Df, Unk). The treatment was initiated on Aug 23, 2011. After that a consumer reported the following side effect(s):
  • Blood Pressure Systolic Increased
  • Cold Sweat
  • Hypoaesthesia
  • Cervical Spinal Stenosis
  • Blood Glucose Increased
  • Menopausal Symptoms
  • Cerebral Infarction
  • Hypoglycaemia
  • Hunger
Concurrently used drugs, which potentially could have contributed to side effect(s) or affected Myonal efficacy:
  • Sitagliptin Phosphate (25 Mg, Unk)
  • Amlodipine (2.5 Mg, Unk)
  • Magmitt (Unk)
  • Amaryl (0.5 Mg, Unk)
  • Methycobal (3 Df, Unk)
  • Crestor (2.5 Mg, Unk)
  • Kakkon-to (Unk)
  • Celecoxib (2 Df, Unk)
The patient was hospitalized.

Renal Failure
In this report, Myonal was administered for the following condition: NA.A 23-year-old male consumer from JAPAN (weight: NA) started Myonal treatment (dosage: NA) on NS.Sometime after starting the treatment, the patient complained of the following side effect(s):
  • Renal Failure
A possible interaction with other drugs could have contributed to this reaction: NA.The patient was hospitalized.Establishing a causal relationship between a specific drug and consumer's side effects is complex, but it is possible that in this report Myonal treatment could be related to the listed above side effect(s).

Skin Exfoliation, Sensory Disturbance, Hyperkeratosis
This is a report of the following Myonal side effect(s):
  • Skin Exfoliation
  • Sensory Disturbance
  • Hyperkeratosis
A 42-year-old male patient from JAPAN (weight: NA) presented with the following condition: musculoskeletal stiffness,hypercholesterolaemia,hypertension and received a treatment with Myonal (dosage: NA) starting: Apr 16, 2011.The following concurrently used drugs could have generated interactions:
  • Zetia
  • Amlodipine (Dosage Is Uncertain During A Day)
This report suggests that a Myonal treatment could be associated with the listed above side effect(s).

Joint Dislocation
This Myonal report was submitted by a 36-year-old male consumer from JAPAN (weight: NA). The patient was diagnosed with: muscle spasms and Myonal was administered (dosage: 50 Mg, Tid) starting: Mar 28, 2011. The consumer developed a set of symptoms:
  • Joint Dislocation
Other drugs used simultaneously:
  • Botox (50 Units, Single)
  • Botox (50 Units, Single)
Those unexpected symptoms could be linked to a Myonal treatment, however establishing a potential drug-safety problem requires a more detailed clinical analysis.

Joint Dislocation
This is a report of a possible correlation between Myonal use and the following symptoms/side effect(s):
  • Joint Dislocation
which could contribute to an assessment of Myonal risk profile.A 36-year-old male consumer from JAPAN (weight: NA) was suffering from muscle spasms and was treated with Myonal (dosage: 50 Mg, Tid) starting Mar 28, 2011.Other concurrent medications:
  • Botox (50 Units, Single)
  • Botox (50 Units, Single)


Coagulopathy, Erythema Multiforme, Aphthous Stomatitis, Hepatic Function Abnormal, Skin Ulcer
A 17-year-old male patient from JAPAN (weight: NA) presented with the following symptoms: malignant glioma and after a treatment with Myonal (eperisone Hydrochloride) (dosage: 50 Mg, Tid, Po) experienced the following side effect(s):
  • Coagulopathy
  • Erythema Multiforme
  • Aphthous Stomatitis
  • Hepatic Function Abnormal
  • Skin Ulcer
The treatment was started on Apr 20, 2011. Myonal (eperisone Hydrochloride) was used in combination with the following drugs:
  • Loxonin (loxoprofen Sodium Hydrate) (loxoprofen Sodium) (60 Mg, Prn, Po)
  • Ubretid (distigmine Bromide) (5 Mg, Qd, Po)
  • Primperan Tab (10 Mg, Qd, Iv)
  • Mucosta (rebamipide) (100 Mg, Prn, Po)
  • Zolpidem Tartrate (5 Mg, Qd, Po)
  • Magmitt (magnesium Oxide) (330 Mg, Tid, Po)
  • Fentanyl Citrate (Iv)
  • Famotidine (10 Mg, Bid, Po)
The patient was hospitalized.This report could alert potential Myonal (eperisone Hydrochloride) consumers.

Hypoglycaemia
In this report, a 76-year-old male patient from JAPAN (weight: NA) was affected by a possible Myonal side effect.The patient was diagnosed with NA. After a treatment with Myonal (dosage: NA, start date: Jan 28, 2011), the patient experienced the following side effect(s):
  • Hypoglycaemia
The following simultaneously used drugs could have led to this reaction:
  • Loxonin
  • Methycobal
  • Amlodipine (2.5 Mg, Unk)
The findings here stress that side effects should be taken into consideration when evaluating a Myonal treatment.

Hepatic Function Abnormal, White Blood Cell Count Increased, Pyrexia
This is a report of a 39-year-old female patient from JAPAN (weight: NA), who used Myonal (dosage: 50 Mg, 2x/day) for a treatment of cervicobrachial syndrome. After starting a treatment on Dec 13, 2010, the patient experienced the following side effect(s):
  • Hepatic Function Abnormal
  • White Blood Cell Count Increased
  • Pyrexia
The following drugs could possibly have interacted with the Myonal treatment
  • Mucosta (100 Mg, 2x/day)
  • Celecoxib (100 Mg, 2x/day)
The patient was hospitalized.Taken together, these observations suggest that a Myonal treatment could be related to side effect(s), such as Hepatic Function Abnormal, White Blood Cell Count Increased, Pyrexia.

Somnolence, Intraocular Pressure Increased
This somnolence side effect was reported by a pharmacist from JAPAN. A 68-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Myonal (dosage: NA), which was started on NS. Concurrently used drugs:
  • Neurotropin
  • Lyrica (75mg Daily)
  • Loxonin (Unk)
  • Mucosta
When starting to take Myonal the consumer reported the following symptoms:
  • Somnolence
  • Intraocular Pressure Increased
These side effects may potentially be related to Myonal.

Hypoglycaemia
This is a Myonal side effect report of a 76-year-old male patient (weight:NA) from JAPAN, suffering from the following symptoms/conditions: NA, who was treated with Myonal (dosage:NA, start time: Jan 28, 2011), combined with:
  • Methycobal
  • Amlodipine (2.5 Mg, Unk)
  • Loxonin
, and developed a serious reaction and a hypoglycaemia side effect. The patient presented with:
  • Hypoglycaemia
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Myonal treatment in male patients suffering from NA, resulting in hypoglycaemia.

Syncope, Palpitations, Vomiting, Cold Sweat, Abdominal Pain
This report suggests a potential Myonal syncope side effect(s) that can have serious consequences. A 64-year-old male patient from JAPAN (weight:NA) was diagnosed with the following health condition(s): NA and used Myonal (dosage: NA) starting Feb 05, 2007. Soon after starting Myonal the patient began experiencing various side effects, including:
  • Syncope
  • Palpitations
  • Vomiting
  • Cold Sweat
  • Abdominal Pain
Drugs used concurrently:
  • Loxonin
  • Aspirin
  • Amaryl
  • Valsartan
  • Amlodipine Besilate
  • Allegra
Although Myonal demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as syncope, may still occur.

Respiratory Tract Oedema
This respiratory tract oedema problem was reported by a physician from JAPAN. A 54-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): musculoskeletal pain,abdominal pain upper.On Oct 20, 2010 a consumer started treatment with Myonal (dosage: Unk). The following drugs/medications were being taken at the same time:
  • Selbex (Unk)
  • Celecox (200 Mg)
  • Gasmotin (5 Mg, 3x/day)
  • Pravastatin Sodium (Unk)
  • Isodine (Unk)
  • Celecox (200 Mg, Unk)
  • Influenza Virus Vaccine Polyvalent (Unk)
  • Acinon (Unk)
When commencing Myonal, the patient experienced the following unwanted symptoms /side effects:
  • Respiratory Tract Oedema
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 respiratory tract oedema, may become evident only after a product is in use by the general population.

Muscular Weakness, Pneumonia Aspiration, Increased Viscosity Of Bronchial Secretion
This is a Myonal side effect report of a 4-year-old male patient (weight: NA) from JAPAN. The patient developed the following symptoms/conditions: epilepsy and was treated with Myonal (dosage: 14 Mg, Unk) starting May 19, 2009. Concurrently used drugs:
  • Phenobal (12 Mg, Qd)
  • Rivotril (0.25 Mg, Qd)
  • Periactin (1.5 Mg, Qd)
  • Botox (60 Units, Single)
  • Asverin (30 Mg, Qd)
  • Diapp (4 Mg, Qd)
  • Botox (70 Units, Single)
  • Botox (40 Units, Single)
Soon after that, the consumer experienced the following of symptoms:
  • Muscular Weakness
  • Pneumonia Aspiration
  • Increased Viscosity Of Bronchial Secretion
The patient was hospitalized. This opens a possibility that Myonal could cause muscular weakness and that some male patients may be more susceptible.

Chronic Obstructive Pulmonary Disease
A male patient (weight: NA) from JAPAN with the following symptoms: headache started Myonal treatment (dosage: NA) on Aug 25, 2010. Soon after starting Myonal treatment, the consumer experienced several side effects, including:
  • Chronic Obstructive Pulmonary Disease
. Concurrently used drugs:
  • Loxonin
  • Symbicort (160/4.5 Ug Two Inhalation Two Times A Day)
  • Sultanol
  • Kenalog
  • Diovan
  • Mucosta
  • Spiriva
  • Calonal
The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Myonal side effects, such as chronic obstructive pulmonary disease.

Abdominal Pain Upper, Epilepsy, Insomnia
This abdominal pain upper side effect was reported by a health professional from JAPAN. A female patient (weight:NA) experienced the following symptoms/conditions: back pain,depression,lacunar infarction.The patient was prescribed Myonal (dosage: 100 Mg), which was started on Mar 23, 2007. Concurrently used drugs:
  • Hi-z (50 Mg)
  • Clopidogrel (50 Mg)
  • Clopidogrel (50 Mg)
  • Clopidogrel (25 Mg)
.When starting to take Myonal the consumer reported symptoms, such as:
  • Abdominal Pain Upper
  • Epilepsy
  • Insomnia
These side effects may potentially be related to Myonal.

Abdominal Pain Upper, Epilepsy, Insomnia
This is a report of a female patient (weight: NA) from JAPAN, suffering from the following symptoms/conditions: NA, who was treated with Myonal (dosage: 100 Mg, start time: Mar 23, 2007), combined with:
  • Hi-z (50 Mg)
  • Clopidogrel (50 Mg)
  • Clopidogrel (50 Mg)
  • Clopidogrel (25 Mg)
and developed a serious reaction and side effect(s). The consumer presented with:
  • Abdominal Pain Upper
  • Epilepsy
  • Insomnia
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Myonal treatment in female patients, resulting in abdominal pain upper side effect.

Colonic Haemorrhage, Diverticulum Intestinal
This report suggests a potential Myonal Colonic Haemorrhage, Diverticulum Intestinal side effect(s) that can have serious consequences. A female patient (weight: NA) from was diagnosed with the following symptoms/conditions: ill-defined disorder,hypertension and used Myonal (dosage: NA) starting NS. Soon after starting Myonal the patient began experiencing various side effects, including:
  • Colonic Haemorrhage
  • Diverticulum Intestinal
Drugs used concurrently:
  • Coversyl (Daily Dose: 4 Milligram(s))
  • Herbesser (Daily Dose: 60 Milligram(s))
  • Gasmotin
  • Mm
  • Soleton (Daily Dose: 240 Milligram(s))
  • Depas
  • Halcion
  • Gasnyne
The patient was hospitalized. Although Myonal demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as colonic haemorrhage, may still occur.



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.


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