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Synthroid (Levothyroxine) - Dizziness - Suspected Cause - Side Effect Reports

 
 



Index of reports > Cases with Dizziness (47)

Below is the selection of side effect reports (a.k.a. adverse event reports) related to Synthroid (Levothyroxine) where reactions include dizziness. The selected reports were submitted to the FDA during the sample period of about a year.

 Reports 1 - 30 of 47   Next >>

Possible Synthroid side effects in 81 year old female

Reported by a consumer/non-health professional from United States on 2012-08-10

Patient: 81 year old female, weighing 61.2 kg (134.6 pounds)

Reactions: Weight Decreased, Pain, Chills, Drug Interaction, Headache, Pyrexia, Abdominal Pain Upper, Malaise, Fatigue, Oedema Peripheral, DRY Mouth, Dizziness, Muscle Spasms, Blood Pressure Increased, Vein Disorder, Nausea, Paraesthesia, Anxiety, Panic Attack, Insomnia, Vision Blurred, Gait Disturbance, Influenza

Adverse event resulted in: disablity

Drug(s) suspected as cause:
Synthroid
    Dosage: 50 mcg, 1 d
    Indication: Thyroid Disorder

Fish OIL (Fish Oil)
    Indication: Product Used FOR Unknown Indication

Oxybutynin Chloride
    Dosage: 10 mg
    Indication: Hypertonic Bladder

Hydrocodone Bitartrate
    Dosage: 350 mg, as needed (one or two times)
    Indication: Spinal Cord Disorder

Rivastigmine Tartrate
    Indication: Dementia

Lisinopril
    Dosage: 30 mg (10 mg, 3 in 1 d)
    Indication: Hypertension

Aspirin
    Dosage: 81 mg, 1 d
    Indication: Hypertension

Xanax
    Dosage: 1 mg, as required)
    Indication: Panic Attack

Multivitamin
    Dosage: unknown
    Indication: Product Used FOR Unknown Indication

Lyrica
    Dosage: 50 mg, 1 d, oral
    Administration route: Oral
    Indication: Vein Pain
    Start date: 2012-07-26
    End date: 2012-07-28

Lovastatin
    Dosage: 20 mg, d
    Indication: Blood Cholesterol



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-07-31

Patient: female, weighing 62.2 kg (136.8 pounds)

Reactions: Brain Neoplasm Benign, Weight Increased, Feeling of Despair, Fatigue, Heart Rate Decreased, Alopecia, Dizziness

Drug(s) suspected as cause:
Synthroid
    End date: 2012-02-01

Synthroid
    Indication: Product Used FOR Unknown Indication
    Start date: 2009-02-01

Synthroid
    Start date: 2012-02-01

Synthroid

Other drugs received by patient: Reclast



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-07-27

Patient: female, weighing 110.3 kg (242.7 pounds)

Reactions: Endometriosis, Blood Thyroid Stimulating Hormone Decreased, Uterine Enlargement, Thyroxine Increased, Thinking Abnormal, Hot Flush, Dizziness, Temperature Intolerance, Asthenia, Polycystic Ovaries

Drug(s) suspected as cause:
Synthroid
    Indication: Thyroidectomy
    Start date: 1971-01-01
    End date: 2012-07-17

Synthroid
    Start date: 2012-07-17

Other drugs received by patient: Unknown Medications



Possible Synthroid side effects in male

Reported by a consumer/non-health professional from United States on 2012-07-10

Patient: male

Reactions: Gallbladder Pain, Respiratory Disorder, Suffocation Feeling, Rash, Blood Thyroid Stimulating Hormone Decreased, Skin Odour Abnormal, Oedema Peripheral, Dizziness, Asthenia, Feeling Abnormal, Cough, Blister, Heart Rate Abnormal

Drug(s) suspected as cause:
Levoxyl
    Dosage: unk

Synthroid
    Dosage: unk

Levoxyl
    Dosage: 50 ug, unk

Levoxyl
    Dosage: unk
    Start date: 2012-04-01

Levoxyl
    Dosage: 50 ug, 4x/day
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2011-06-01

Levothyroxine Sodium
    Dosage: unk
    Start date: 2012-04-01
    End date: 2012-04-01



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from Brazil on 2012-07-05

Patient: female, weighing 57.5 kg (126.5 pounds)

Reactions: Bone Pain, Abasia, Pain, Expired Drug Administered, Headache, Bone Erosion, Malaise, Arthropathy, Joint Range of Motion Decreased, Dizziness, Joint Effusion, Sinusitis, Pain in Extremity, Meniscus Cyst, Musculoskeletal Pain, Muscular Weakness, Menopause, Osteoarthritis, Arthralgia, Joint Swelling, Insomnia, Gait Disturbance

Drug(s) suspected as cause:
Levothyroxine Sodium
    Dosage: fasting
    Administration route: Oral
    Indication: Hypothyroidism

Synthroid
    Dosage: fasting
    Administration route: Oral
    Indication: Hypothyroidism

Synthroid

Other drugs received by patient: Estradiol; Estradiol



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-06-13

Patient: female, weighing 44.4 kg (97.8 pounds)

Reactions: Increased Appetite, Conversion Disorder, Pain, Headache, Herpes Zoster, Fatigue, Dizziness, Emotional Disorder, Hallucination, Candidiasis, Thyroid Function Test Abnormal, Nervousness, Vomiting, Restlessness, Insomnia, Vertigo, Vision Blurred, Colitis

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Synthroid
    Dosage: 75 ug, daily
    Indication: Thyroidectomy

Ativan
    Dosage: 50 mg, 1x/day
    Indication: Agitation

Ativan
    Dosage: 0.5 mg, as needed

Oxycodone HCL
    Dosage: unk

Ciprofloxacin HCL
    Dosage: unk

Morphine Sulfate
    Dosage: unk

Lyrica
    Dosage: 50 mg, 2x/day
    Administration route: Oral
    Indication: Post Herpetic Neuralgia
    Start date: 2012-05-17

Gabapentin
    Dosage: unk, 2x/day
    Indication: Post Herpetic Neuralgia

Ativan
    Dosage: 25mg in morning and 50mg in evening
    Indication: Anxiety



Possible Synthroid side effects in male

Reported by a consumer/non-health professional from United States on 2012-05-23

Patient: male

Reactions: Gallbladder Pain, Respiratory Disorder, Suffocation Feeling, Rash, Blood Thyroid Stimulating Hormone Decreased, Skin Odour Abnormal, Oedema Peripheral, Dizziness, Asthenia, Feeling Abnormal, Heart Rate Abnormal, Blister, Cough

Drug(s) suspected as cause:
Levoxyl
    Dosage: 50 ug, 4x/day
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2011-06-01

Levoxyl
    Dosage: unk
    Start date: 2012-04-01

Levoxyl
    Dosage: unk

Levothyroxine Sodium
    Dosage: unk
    Start date: 2012-04-01
    End date: 2012-04-01

Synthroid
    Dosage: unk

Levoxyl
    Dosage: unk



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-05-23

Patient: female, weighing 52.2 kg (114.7 pounds)

Reactions: Drug Ineffective, Dizziness, Stress

Drug(s) suspected as cause:
Synthroid
    Dosage: 0.2 mg, daily
    Indication: Thyroidectomy
    Start date: 1981-01-01

Xanax
    Dosage: 0.5 mg, as needed
    Indication: Stress



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-05-10

Patient: female, weighing 90.8 kg (199.8 pounds)

Reactions: Concussion, Head Injury, Dizziness, Fall

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Synthroid
    Indication: Hypothyroidism
    Start date: 2012-03-08

Butalbital
    Indication: Headache

Other drugs received by patient: Lortab; Aspirin; Carafate; Lasix; Zoloft



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-05-09

Patient: female, weighing 62.2 kg (136.8 pounds)

Reactions: Brain Neoplasm Benign, Weight Increased, Heart Rate Decreased, Fatigue, Dizziness

Drug(s) suspected as cause:
Synthroid
    Start date: 2012-02-01

Synthroid
    Indication: Product Used FOR Unknown Indication
    Start date: 2009-02-01

Synthroid
    End date: 2012-02-01

Synthroid

Other drugs received by patient: Reclast



Possible Synthroid side effects in female

Reported by a physician from United States on 2012-05-04

Patient: female, weighing 97.5 kg (214.5 pounds)

Reactions: Drug Dose Omission, Asthma, Scab, Orthostatic Hypotension, Headache, Fall, Chest Pain, Dizziness, Migraine, Dyspnoea, Drug Hypersensitivity, Supraventricular Tachycardia, Laceration, Impaired Healing, LOW Density Lipoprotein Increased, Hypertension, Sleep Apnoea Syndrome

Drug(s) suspected as cause:
Aspirin
    Indication: Product Used FOR Unknown Indication

Topamax
    Indication: Product Used FOR Unknown Indication

Vesicare
    Indication: Product Used FOR Unknown Indication

Singulair
    Indication: Product Used FOR Unknown Indication

Promethazine
    Indication: Product Used FOR Unknown Indication

Methotrexate
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Tizanidine HCL
    Indication: Product Used FOR Unknown Indication

Sulfasalazine
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Butalbital
    Indication: Product Used FOR Unknown Indication

Remicade
    Start date: 2011-01-01

Verapamil
    Indication: Product Used FOR Unknown Indication

Neurontin
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Folic Acid
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Prozac
    Indication: Product Used FOR Unknown Indication

Remicade
    Indication: Rheumatoid Arthritis

Remicade
    Dosage: loading dose
    Start date: 2010-01-01

Darvon
    Indication: Product Used FOR Unknown Indication

Fiorinal
    Indication: Product Used FOR Unknown Indication

Enalapril Maleate
    Indication: Product Used FOR Unknown Indication

Xanax
    Indication: Product Used FOR Unknown Indication

Requip
    Indication: Product Used FOR Unknown Indication

Voltaren
    Administration route: Topical
    Indication: Product Used FOR Unknown Indication

Lodine
    Indication: Product Used FOR Unknown Indication

Soma
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Synthroid
    Administration route: Oral
    Indication: Product Used FOR Unknown Indication

Calcium and VIT D
    Indication: Product Used FOR Unknown Indication

Hydrocodone Bitartrate and Ibuprofen
    Indication: Product Used FOR Unknown Indication

Phenergan
    Indication: Product Used FOR Unknown Indication

Other drugs received by patient: Methotrexate



Possible Synthroid side effects in male

Reported by a consumer/non-health professional from United States on 2012-04-30

Patient: male

Reactions: Gallbladder Pain, Respiratory Disorder, Suffocation Feeling, Rash, Blood Thyroid Stimulating Hormone Decreased, Skin Odour Abnormal, Oedema Peripheral, Dizziness, Feeling Abnormal, Asthenia, Cough, Blister, Heart Rate Abnormal

Drug(s) suspected as cause:
Levoxyl
    Dosage: unk
    Start date: 2012-04-01

Synthroid
    Dosage: unk

Levothyroxine Sodium
    Dosage: unk
    Start date: 2012-04-01
    End date: 2012-04-01

Levoxyl
    Dosage: 50 ug, 4x/day
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2011-06-01



Possible Synthroid side effects in male

Reported by a physician from United States on 2012-04-20

Patient: male, weighing 69.9 kg (153.8 pounds)

Reactions: Nasopharyngitis, Drug Ineffective, Deafness, Hypohidrosis, Weight Increased, Fatigue, Dizziness, Carpal Tunnel Syndrome, Temperature Intolerance, Hypersomnia, Decreased Appetite, Muscle Spasms, Gastrointestinal Disorder, Hypothyroidism, Memory Impairment, Asthenia, Feeling Abnormal

Drug(s) suspected as cause:
Synthroid
    Dosage: unit dose is daily average
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2005-01-01
    End date: 2012-03-31

Synthroid
    Start date: 2012-04-01

Other drugs received by patient: Areds EYE Vitamins; Cytomel



Possible Synthroid side effects in female

Reported by a physician from United States on 2012-04-12

Patient: female, weighing 149.8 kg (329.6 pounds)

Reactions: Migraine, Benign Intracranial Hypertension, Nausea, Dizziness

Drug(s) suspected as cause:
Synthroid

Other drugs received by patient: Prilosec; Ativan



Possible Synthroid side effects in male

Reported by a consumer/non-health professional from Canada on 2012-04-06

Patient: male

Reactions: Product Quality Issue, Fatigue, Dizziness, Somnolence

Drug(s) suspected as cause:
Synthroid



Possible Synthroid side effects in female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-03-16

Patient: female, weighing 149.8 kg (329.6 pounds)

Reactions: Migraine, Nausea, Visual Acuity Reduced, Headache, CSF Volume Increased, Benign Intracranial Hypertension, Brain Oedema, Optic Nerve Injury, Dizziness

Drug(s) suspected as cause:
Synthroid

Other drugs received by patient: Ativan; Prilosec



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-03-13

Patient: female, weighing 62.2 kg (136.8 pounds)

Reactions: Weight Increased, Heart Rate Decreased, Fatigue, Dizziness, Brain Neoplasm

Drug(s) suspected as cause:
Synthroid

Synthroid
    End date: 2012-02-01

Synthroid
    Start date: 2012-02-01

Synthroid
    Indication: Product Used FOR Unknown Indication
    Start date: 2009-02-01

Other drugs received by patient: Reclast



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-03-07

Patient: female, weighing 102.4 kg (225.3 pounds)

Reactions: Dysstasia, Dizziness, Headache, Asthenia, Feeling Abnormal

Drug(s) suspected as cause:
Azithromycin
    Dosage: unk
    Indication: Sinusitis

Azithromycin
    Indication: Tooth Infection

Levoxyl
    Dosage: 25 ug, 1x/day
    Administration route: Oral
    Start date: 2011-02-22
    End date: 2011-01-01

Synthroid
    Dosage: 25 ug, 1x/day
    Administration route: Oral
    Start date: 2011-03-01
    End date: 2011-03-03

Clindamycin HCL
    Dosage: unk
    Administration route: Oral
    Indication: Sinusitis
    Start date: 2011-05-23
    End date: 2011-05-26

Venlafaxine HCL
    Dosage: 75 mg, 2x/day
    Administration route: Oral
    Indication: Depression

Clindamycin HCL
    Indication: Tooth Infection

Other drugs received by patient: Xanax; Xanax



Possible Synthroid side effects in male

Reported by a consumer/non-health professional from Canada on 2012-02-21

Patient: male

Reactions: Product Quality Issue, Fatigue, Dizziness, Somnolence

Drug(s) suspected as cause:
Synthroid



Possible Synthroid side effects in female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-02-21

Patient: female, weighing 61.2 kg (134.7 pounds)

Reactions: Agitation, Cardiac Flutter, Restless Legs Syndrome, Laceration, Injection Site Pain, Diarrhoea, Dyspepsia, Insomnia, Dizziness, Vision Blurred, Memory Impairment, Depression

Adverse event resulted in: disablity

Drug(s) suspected as cause:
Synthroid
    Dosage: duration 10 years
    Administration route: Oral
    Indication: Thyroid Disorder

Invega Sustenna
    Dosage: after 28-feb-2012
    Indication: Bipolar Disorder

Atenolol
    Administration route: Oral
    Indication: Hypertension

Invega Sustenna
    Start date: 2012-01-24
    End date: 2012-01-24

Invega Sustenna
    Start date: 2012-01-31

Other drugs received by patient: Albuterol; Magnesium; Multiple Vitamin; Vitamin B Complex CAP



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from Puerto Rico on 2012-02-08

Patient: female, weighing 69.0 kg (151.8 pounds)

Reactions: Dysarthria, Incoherent, Unresponsive To Stimuli, Dizziness, Epilepsy

Adverse event resulted in: hospitalization

Drug(s) suspected as cause:
Synthroid

Synthroid
    Administration route: Oral
    Start date: 2012-01-29

Synthroid
    Administration route: Oral
    Indication: Hypothyroidism

Synthroid



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-01-28

Patient: female, weighing 102.2 kg (224.7 pounds)

Reactions: Vomiting, Orthostatic Hypotension, Headache, Weight Increased, Rheumatoid Arthritis, Neuropathy Peripheral, Dizziness, Gait Disturbance, Intracranial Pressure Increased, Cerebral Cyst, Arthritis

Drug(s) suspected as cause:
Prednisone TAB
    Administration route: Oral
    Indication: Rheumatoid Arthritis

Synthroid
    Administration route: Oral
    Indication: Hypothyroidism

Humira
    Indication: Rheumatoid Arthritis

Other drugs received by patient: Amitriptyline HCL; Lidocaine Jelly; Triamcinolone Ointment; Oxycodone HCL; Oxycodone HCL; Vitamin TAB; Lyrica; Metaxalone; Lidocaine Pressure Point Injections



Possible Synthroid side effects in 51 year old female

Reported by a health professional (non-physician/pharmacist) from United States on 2012-01-27

Patient: 51 year old female, weighing 77.3 kg (170.1 pounds)

Reactions: Nausea, Musculoskeletal Pain, Blood Thyroid Stimulating Hormone Increased, Headache, Hyperhidrosis, Feeling Cold, Neck Pain, Dizziness, Cold Sweat, Asthenia, Pain in JAW

Drug(s) suspected as cause:
Wellbutrin
    Indication: Depression
    Start date: 1994-01-01

Synthroid
    Indication: Hypothyroidism

Other drugs received by patient: Lorazepam



Possible Synthroid side effects in 43 year old female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: 43 year old female, weighing 56.3 kg (123.9 pounds)

Reactions: Blood Glucose Decreased, Alopecia, Dizziness, Headache, Heart Rate Irregular

Drug(s) suspected as cause:
Synthroid
    Indication: Radiotherapy To Thyroid

Synthroid
    Dosage: in the morning
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2010-12-14

Other drugs received by patient: Blood Pressure Medication; Clonozapam



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: female

Reactions: Anxiety, Nausea, Muscular Weakness, Dizziness, Headache, Hyperhidrosis, Abdominal Pain Upper

Drug(s) suspected as cause:
Synthroid



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: female, weighing 70.8 kg (155.8 pounds)

Reactions: Dizziness, Headache, Feeling Abnormal

Drug(s) suspected as cause:
Synthroid
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2008-01-01

Synthroid
    Indication: Hypothyroidism



Possible Synthroid side effects in 31 year old female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: 31 year old female, weighing 63.6 kg (139.8 pounds)

Reactions: Tablet Physical Issue, Blood Thyroid Stimulating Hormone Normal, Muscular Weakness, Dysphemia, Tremor, Dysarthria, Fatigue, Palpitations, Dizziness, Memory Impairment

Drug(s) suspected as cause:
Synthroid
    Indication: Hypothyroidism
    Start date: 2008-01-01
    End date: 2011-11-28

Synthroid
    Start date: 2011-11-28

Other drugs received by patient: Multi-Vitamins; Probiotic; Vitamin C



Possible Synthroid side effects in female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: female, weighing 56.0 kg (123.2 pounds)

Reactions: Nausea, Dizziness, Hunger

Drug(s) suspected as cause:
Synthroid

Other drugs received by patient: Januvia



Possible Synthroid side effects in 78 year old female

Reported by a consumer/non-health professional from United States on 2012-01-05

Patient: 78 year old female, weighing 52.2 kg (114.9 pounds)

Reactions: Dizziness, Hyperhidrosis

Drug(s) suspected as cause:
Synthroid
    Administration route: Oral
    Start date: 2010-03-01

Synthroid
    Administration route: Oral
    Indication: Hypothyroidism
    Start date: 2005-01-01
    End date: 2010-03-01



Possible Synthroid side effects in female

Reported by a pharmacist from United States on 2012-01-05

Patient: female

Reactions: Dizziness

Drug(s) suspected as cause:
Synthroid



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