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Robaxin Side Effects and Adverse Effects reported to US Food and Drug Administration (FDA)

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Showing 1-25 of 54 

Deep Vein Thrombosis, Pulmonary Embolism (7551394-X)
on Jun 01, 2011 Female from UNITED STATES , 27 years of age, weighting 195.0 lb, was treated with Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: deep vein thrombosis, pulmonary embolism. Robaxin dosage: Unk.
Associated medications used:
  • Yaz
  • Albuterol Sulfate Autohaler (Unk)
  • St. John's Wort (Unk)
  • Vitamin Tab (Unk)
  • Norco (Unk)
  • Naproxen (aleve) (Unk Unk, Prn)
  • Prednisone (Unk)
Patient was hospitalized.

Myopia (7518461-8)
Patient was taking Robaxin. Patient felt the following Robaxin side effects: myopia on May 26, 2011 from UNITED STATES Additional patient health information: Female , 40 years of age, . Robaxin dosage: N/A.
Multiple prescriptions taken:
  • Ultram
  • Imitrex
  • Naproxen


Malaise, Abdominal Discomfort, Abdominal Pain Upper, Diarrhoea, Vision Blurred, Haematochezia, Ulcer, Faeces Discoloured, Gastric Haemorrhage (7513316-7)
Adverse event was reported on May 25, 2011 by a Male taking Robaxin (Dosage: Twice A Day Am-once Pm-once Every 12 Hrs. End Of August 2010) . Location: UNITED STATES , weighting 125.0 lb, After Robaxin was administered, patient encountered several Robaxin side effects: malaise, abdominal discomfort, abdominal pain upper, diarrhoea, vision blurred, haematochezia, ulcer, faeces discoloured, gastric haemorrhage.
Multiple concurrent drugs taken:
  • Naproxen (Twice A Day Am-once Pm-once Every 12 Hrs Beginning Of August 2010)
  • Diflunisal
Patient was hospitalized.

Back Disorder, Pain, Nausea, Fatigue, Discomfort, Vomiting (7471930-1)
on Jul 29, 2010 Female from UNITED STATES , 52 years of age, was treated with Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: back disorder, pain, nausea, fatigue, discomfort, vomiting. Robaxin dosage: N/A.
Associated medications used:
  • Oxycodone
  • Tykerb (1215mg Per Day)
  • Phenergan Hcl
  • Lisinopril
  • Coreg
  • Zantac 75



Ligament Operation, Jaw Operation, Intervertebral Disc Operation, Gallbladder Operation (7443413-6)
on Apr 26, 2011 Female from UNITED STATES , weighting 134.5 lb, was treated with Robaxin. Patient felt the following Robaxin side effects: ligament operation, jaw operation, intervertebral disc operation, gallbladder operation. Robaxin dosage: 750 Mg, Every 3 Hours.
Multiple prescriptions taken:
  • Singulair (Unk)
  • Calan (120 Mg, 1x/day)
  • Amitriptyline (50 Mg, 1x/day At Night)
  • Hyoscyamine (Unk)


Hyperlipidaemia, Oedema, Pulmonary Hypertension (7435362-4)
Patient was taking Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: hyperlipidaemia, oedema, pulmonary hypertension on Apr 11, 2011 from UNITED STATES Additional patient health information: Female , weighting 167.3 lb, . Robaxin dosage: N/A.
Multiple concurrent drugs taken:
  • Citalopram
  • Norvasc
  • Naproxen
  • Paroxetine Hcl
  • Avandamet


Tremor, Insomnia, Fatigue, Dysphonia, Abnormal Dreams, Renal Failure Acute, Surgery, Middle Insomnia (7372092-1)
Adverse event was reported on Mar 15, 2011 by a Female taking Robaxin (Dosage: N/A) was diagnosed with
  • muscle spasms
  • anxiety
  • hypertension
and. Location: UNITED STATES , 67 years of age, weighting 190.0 lb, Directly after, patient experienced the unwanted or unexpected Robaxin side effects: tremor, insomnia, fatigue, dysphonia, abnormal dreams, renal failure acute, surgery, middle insomnia.
Associated medications used:
  • Clonazepam
  • Blood Pressure Med
  • Seroquel
  • Ativan
  • Seroquel
  • Methocarbamol
  • Seroquel
  • Nexium
Patient was hospitalized.

Deep Vein Thrombosis, Pain (7371127-X)
on Aug 11, 2010 Female from UNITED STATES , weighting 250.5 lb, was treated with Robaxin. Patient felt the following Robaxin side effects: deep vein thrombosis, pain. Robaxin dosage: N/A.
Multiple prescriptions taken:
  • Yaz
  • Ocella
  • Relafen


Deep Vein Thrombosis, Pulmonary Embolism (7361857-8)
on Sep 27, 2010 Female from UNITED STATES , weighting 115.0 lb, was diagnosed with
  • hypotonia
  • acne
and was treated with Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: deep vein thrombosis, pulmonary embolism. Robaxin dosage: 500 Mg, Unk.
Multiple concurrent drugs taken:
  • Yaz
  • Yasmin (1 Df (daily Dose), Qd, Oral)
  • Esgic
  • Coumadin
  • Advil Liqui-gels
  • Advair Diskus 100/50
  • Depo-provera (Unk)
  • Yasmin
Patient was hospitalized.

Gallbladder Non-functioning, Dysfunctional Uterine Bleeding, Pelvic Pain (7348033-X)
Patient was taking Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: gallbladder non-functioning, dysfunctional uterine bleeding, pelvic pain on Feb 14, 2011 from UNITED STATES Additional patient health information: Female , weighting 236.6 lb, . Robaxin dosage: N/A.
Associated medications used:
  • Xanax
  • Soma
  • Vicodin
  • Yasmin
Patient was hospitalized.

Pain In Extremity, Skin Discolouration, Skin Exfoliation, Erythema (7337309-8)
Adverse event was reported on Feb 22, 2011 by a Male taking Robaxin (Dosage: 750 Milligram) . Location: UNITED STATES , weighting 160.1 lb, Patient felt the following Robaxin side effects: pain in extremity, skin discolouration, skin exfoliation, erythema.
Multiple prescriptions taken:
  • Fentanyl
  • Crestor (10 Milligram)
  • Polyethylene Glycol
  • Tramadol
  • Revlimid (25 Milligram)
  • Lotrel (10/20)
  • Valerian Root (3)
  • Revlimid (15 Milligram)


Pharyngeal Oedema, Eye Swelling, Swollen Tongue (7307861-7)
on Feb 16, 2011 Female from UNITED STATES , 66 years of age, was treated with Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: pharyngeal oedema, eye swelling, swollen tongue. Robaxin dosage: N/A.
Multiple concurrent drugs taken:
  • Nucynta
  • Nucynta
  • Effexor


Cardiac Failure Congestive, Nausea, Lung Neoplasm Malignant, Myocardial Infarction, Angina Unstable, Brain Neoplasm Malignant, Vomiting, Pulmonary Oedema, Coronary Artery Stenosis (7278132-2)
on Feb 03, 2011 Female from UNITED STATES , 47 years of age, weighting 192.5 lb, was treated with Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: cardiac failure congestive, nausea, lung neoplasm malignant, myocardial infarction, angina unstable, brain neoplasm malignant, vomiting, pulmonary oedema, coronary artery stenosis. Robaxin dosage: N/A.
Associated medications used:
  • Crestor
  • Celexa
  • Zetia
  • Lyrica
  • Avandia (4mg Twice Per Day)
  • Lotensin
  • Avandamet
  • Humulin R
Patient was hospitalized.

Local Swelling, Burning Sensation, Hypoaesthesia, Surgery, Inflammation (7276483-9)
Patient was taking Robaxin. Patient felt the following Robaxin side effects: local swelling, burning sensation, hypoaesthesia, surgery, inflammation on Feb 01, 2011 from UNITED STATES Additional patient health information: Female , weighting 259.9 lb, . Robaxin dosage: 750 Mg, 3x/day.
Multiple prescriptions taken:
  • Lyrica (100 Mg, 1x/day)
  • Progesterone (Unk)
  • Percocet (5.5 Mg, 3x/day)
  • Prozac (20 Mg, 1x/day)
  • Premarin (Unk)


Arthralgia (7263771-5)
Adverse event was reported on Nov 04, 2010 by a Female taking Robaxin (Dosage: Twice Daily, As Needed) was diagnosed with
  • muscle spasms
  • hypersensitivity
  • psoriasis
and. Location: UNITED STATES , weighting 185.2 lb, After Robaxin was administered, patient encountered several Robaxin side effects: arthralgia.
Multiple concurrent drugs taken:
  • Claritin
  • Humira


Injection Site Haemorrhage, Injection Site Nodule, Device Malfunction (7263522-4)
on Dec 15, 2010 Female from UNITED STATES , 25 years of age, was treated with Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: injection site haemorrhage, injection site nodule, device malfunction. Robaxin dosage: N/A.
Associated medications used:
  • Vit D
  • Tramadol Hcl
  • Iron Otc
  • Tylenol W/ Codeine No. 3
  • Humira


Movement Disorder, Weight Increased, Pain (7257000-6)
on Jul 15, 2010 Female from UNITED STATES , weighting 160.1 lb, was diagnosed with
  • muscle spasms
  • fibromyalgia
and was treated with Robaxin. Patient felt the following Robaxin side effects: movement disorder, weight increased, pain. Robaxin dosage: N/A.
Multiple prescriptions taken:
  • Lyrica
  • Vitamin B Complex Cap
  • Prednisone
  • Humira
  • Diovan
  • Welchol
  • Valtrex
  • Cpap Machine


Hypersensitivity (7224679-4)
Patient was taking Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: hypersensitivity on Jan 06, 2011 from UNITED STATES Additional patient health information: Female , 41 years of age, weighting 175.0 lb, was diagnosed with
  • muscle spasms
and. Robaxin dosage: 1 Nightly Po.

Areflexia, Dysphagia, Hypoaesthesia Oral (6979553-5)
Adverse event was reported on Sep 10, 2010 by a Female taking Robaxin (Dosage: Po) was diagnosed with
  • pain
and. Location: UNITED STATES , weighting 130.0 lb, Directly after, patient experienced the unwanted or unexpected Robaxin side effects: areflexia, dysphagia, hypoaesthesia oral.
Associated medications used:
  • Methocarbamol


Hallucination, Malaise (6223465-1)
on Jun 05, 2009 Male from UNITED STATES , 45 years of age, weighting 339.5 lb, was diagnosed with
  • muscle spasms
  • staphylococcal infection
  • pain management
and was treated with Robaxin. Patient felt the following Robaxin side effects: hallucination, malaise. Robaxin dosage: N/A.
Multiple prescriptions taken:
  • Vancomycin Hcl
  • Percocet
  • Oxycontin
Patient was hospitalized.

Dysphoria (6168820-3)
on Apr 24, 2009 Female from UNITED STATES , weighting 138.8 lb, was treated with Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: dysphoria. Robaxin dosage: 750mg Tablet 750 Mg Qid Oral.
Multiple concurrent drugs taken:
  • Fluticasone Propionate
  • Mvi (multivitamins)


Charge Syndrome, Neonatal Respiratory Distress Syndrome, Persistent Foetal Circulation (5939850-9)
Patient was taking Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: charge syndrome, neonatal respiratory distress syndrome, persistent foetal circulation on Oct 30, 2008 from UNITED STATES Additional patient health information: Female , weighting 7.72 lb, was diagnosed with
  • pain
  • road traffic accident
and. Robaxin dosage: Standard Dose Presumed Daily. Patient was hospitalized and became disabled.

Diabetes Mellitus, Pyrexia, Rheumatoid Arthritis, Serum Sickness, Urticaria, White Blood Cell Count Decreased, White Blood Cell Count Increased (5646369-1)
Adverse event was reported on Feb 27, 2008 by a Female taking Robaxin (Dosage: N/A) was diagnosed with
  • back pain
and. Location: UNITED STATES , 54 years of age, weighting 275.0 lb, Patient felt the following Robaxin side effects: diabetes mellitus, pyrexia, rheumatoid arthritis, serum sickness, urticaria, white blood cell count decreased, white blood cell count increased. Patient was hospitalized.

Constipation (5367629-8)
on Jun 20, 2007 Male from UNITED STATES , 64 years of age, was treated with Robaxin. After Robaxin was administered, patient encountered several Robaxin side effects: constipation. Robaxin dosage: 750 Mg 1 Po Tid Prn Spasm.

Mania (4940143-7)
on Feb 28, 2006 Female from UNITED STATES , 25 years of age, weighting 135.0 lb, was diagnosed with
  • contusion
  • pain
and was treated with Robaxin. Directly after, patient experienced the unwanted or unexpected Robaxin side effects: mania. Robaxin dosage: Asnec, Oral. Patient was hospitalized.

Showing 1-25 of 54 

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Most drugs have a large list of nonsevere or mild adverse effects which do not rule out continued usage. These effects depend on individual sensitivity, and can include nausea, dizziness, diarrhea, malaise, vomiting, headache, dermatitis, dry mouth, etc. Check commonly reported side effects . These can be considered a form of pseudo-allergic reaction, as not all users experience these effects; many users experience none at all.

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.

Robaxin Information

Alternative ROBAXIN Names:METHOCARB

Active Ingredient: METHOCARB

Robaxin Dosage, Warnings, Usage.

Side Effects reported to FDA: 54. View Robaxin Adverse Reports

Robaxin safety alerts: No

Reported deaths: 1

Reported hospitalizations: 22

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