This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Levoxyl (Levothyroxine) and submitted to the FDA during the sample period of about a year. The information is not vetted and should not be considered as verified clinical evidence.
Reports by Event Outcome
All Cases (283)
Death (10)
Life Threatening Events (2)
Reports by Reaction Type
Drug Ineffective (31),
Fatigue (27),
Alopecia (26),
Malaise (24),
Hypersensitivity (23),
Feeling Abnormal (21),
Dizziness (19),
Anxiety (19),
Rash (17),
Insomnia (17),
Asthenia (17),
Pruritus (16)
Below are a few examples of reports where side effects / adverse reactions may be related to Levoxyl (Levothyroxine). For a complete list or a specific selection of reports, please use the links above.
Possible Levoxyl side effects in 57 year old female
Reported by a consumer/non-health professional from United States on 2012-08-24
Patient: 57 year old female, weighing 68.0 kg (149.6 pounds)
Reactions: Drug Ineffective
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in male
Reported by a pharmacist from United States on 2012-08-24
Patient: male
Reactions: Tremor
Drug(s) suspected as cause:
Levoxyl
Dosage: 175 ug, unk
End date: 2012-08-03
Levoxyl
Dosage: 150 ug, unk
Start date: 2012-08-03
Levoxyl
Dosage: 150 ug, unk
Levoxyl
Dosage: unk
Possible Levoxyl side effects in 68 year old female
Reported by a consumer/non-health professional from United States on 2012-08-24
Patient: 68 year old female, weighing 59.0 kg (129.7 pounds)
Reactions: Nausea, Dyspepsia, Thyroid Disorder, Drug Dispensing Error
Drug(s) suspected as cause:
Levoxyl
Dosage: 50 ug, 1x/day
Indication: Thyroid Disorder
Liothyronine Sodium
Dosage: 5 ug, 1x/day
Indication: Thyroid Disorder
Start date: 2012-08-17
Possible Levoxyl side effects in female
Reported by a physician from United States on 2012-08-24
Patient: female
Reactions: Medication Error, Drug Dispensing Error
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 52 year old female
Reported by a consumer/non-health professional from United States on 2012-08-24
Patient: 52 year old female, weighing 54.4 kg (119.7 pounds)
Reactions: Movement Disorder, Motor Dysfunction, Hypoaesthesia, Muscle Rigidity, Myalgia, Hypokinesia, Arthralgia, Activities of Daily Living Impaired, Insomnia, Dysgraphia, Coordination Abnormal, Gait Disturbance, Muscle Spasms
Drug(s) suspected as cause:
Levoxyl
Dosage: 100 ug, 1x/day
Administration route: Oral
Indication: Autoimmune Thyroiditis
End date: 2012-02-01
Levoxyl
Dosage: 0.05 mg, one daily, 4 weeks
Administration route: Oral
Start date: 2012-05-31
End date: 2012-06-27
Levoxyl
Dosage: 100 ug, 1x/day
Administration route: Oral
Start date: 2012-02-17
Possible Levoxyl side effects in
Reported by a pharmacist from United States on 2012-08-24
Patient:
Reactions: Nervous System Disorder
Drug(s) suspected as cause:
Levoxyl
Dosage: 150 ug, unk
Levoxyl
Dosage: 150 ug, unk
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-23
Patient: female
Reactions: Swelling Face, Hypersomnia
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 67 year old female
Reported by a consumer/non-health professional from United States on 2012-08-23
Patient: 67 year old female, weighing 78.9 kg (173.6 pounds)
Reactions: Confusional State, Nasopharyngitis, Weight Loss Poor, DRY Skin, Thyroxine Increased, Constipation, Weight Increased, Respiratory Tract Congestion, Mood Altered, TRI-Iodothyronine Decreased, Alopecia, Insomnia, Onychoclasis, Disturbance in Attention, Memory Impairment
Drug(s) suspected as cause:
Levoxyl
Dosage: 100 ug, daily
Levoxyl
Dosage: 50 ug, unk
Indication: Hypothyroidism
Synthroid
Dosage: unk
Indication: Hypothyroidism
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-22
Patient: female
Reactions: Product Quality Issue, Drug Ineffective
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 81 year old female
Reported by a consumer/non-health professional from United States on 2012-08-15
Patient: 81 year old female, weighing 51.2 kg (112.7 pounds)
Reactions: Blood Cholesterol Increased, Blood Triglycerides Increased, Hypertension
Drug(s) suspected as cause:
Levoxyl
Other drugs received by patient: Omeprazole; Vitamin D; Docusate; Acetaminophen; Calcium; Vitamin B-12
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-15
Patient: female
Reactions: Palpitations, Drug Intolerance, Extrasystoles, Blood Thyroid Stimulating Hormone Increased
Drug(s) suspected as cause:
Levothyroxine Sodium
Dosage: 12.5 ug, 1x/day (12.5mcg oral tablet once a day by cutting 25mcg tablet into half)
Administration route: Oral
Indication: Hypothyroidism
Levoxyl
Dosage: 12.5 ug, 1x/day (cutting 25mcg tablet into half)
Administration route: Oral
Indication: Hypothyroidism
Start date: 2012-01-01
Levoxyl
Dosage: unk, once a day (taking half of 25mcg tablet and a fraction more of the other half)
Start date: 2012-06-01
Possible Levoxyl side effects in 81 year old female
Reported by a consumer/non-health professional from United States on 2012-08-14
Patient: 81 year old female, weighing 51.2 kg (112.7 pounds)
Reactions: Weight Decreased, Alopecia, Constipation
Drug(s) suspected as cause:
Levoxyl
Other drugs received by patient: D-Mannose; Acetaminophen; Calcium; Omeprazole; Vitamin D; Vitamin B-12
Possible Levoxyl side effects in 52 year old female
Reported by a physician from United States on 2012-08-14
Patient: 52 year old female, weighing 54.4 kg (119.7 pounds)
Reactions: Movement Disorder, Motor Dysfunction, Hypoaesthesia, Muscle Rigidity, Hypokinesia, Activities of Daily Living Impaired, Arthralgia, Insomnia, Dysgraphia, Gait Disturbance, Coordination Abnormal, Muscle Spasms
Drug(s) suspected as cause:
Levoxyl
Dosage: 100 ug, 1x/day
Administration route: Oral
Indication: Autoimmune Thyroiditis
End date: 2012-02-01
Levoxyl
Dosage: 0.05 mg, 1x/day
Administration route: Oral
Start date: 2012-06-04
Levoxyl
Dosage: 100 ug, 1x/day
Administration route: Oral
Start date: 2012-02-17
Possible Levoxyl side effects in 89 year old female
Reported by a consumer/non-health professional from United States on 2012-08-10
Patient: 89 year old female, weighing 66.0 kg (145.2 pounds)
Reactions: Ocular Vascular Disorder, Cataract, Pain in Extremity, Insomnia, Visual Impairment, Pollakiuria, Carpal Tunnel Syndrome
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Levoxyl
Dosage: 75 ug, daily
Levoxyl
Dosage: 200 ug, 1x/day
Start date: 2012-07-01
Levoxyl
Dosage: 50 ug, daily
Indication: Thyroid Disorder
Levoxyl
Dosage: 150 ug, daily
Levoxyl
Dosage: 100 ug, daily
Toviaz
Dosage: unk
Other drugs received by patient: Lisinopril; Zocor; Synthroid; Coumadin; Tricor; Atenolol
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-09
Patient: female
Reactions: Nasopharyngitis, Mood Altered, Thyroid Disorder, Cough
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 64 year old female
Reported by a consumer/non-health professional from United States on 2012-08-08
Patient: 64 year old female
Reactions: Abdominal Discomfort
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 48 year old female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: 48 year old female, weighing 56.7 kg (124.7 pounds)
Reactions: Urticaria, Thyroid Function Test Abnormal
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: female
Reactions: Abdominal Pain Upper
Drug(s) suspected as cause:
Cytomel
Dosage: unk
Administration route: Oral
Levoxyl
Dosage: unk
Administration route: Oral
Possible Levoxyl side effects in 89 year old female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: 89 year old female, weighing 66.0 kg (145.2 pounds)
Reactions: Cataract, Ocular Vascular Disorder, Pain in Extremity, Visual Impairment, Insomnia, Pollakiuria, Carpal Tunnel Syndrome
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Levoxyl
Dosage: 75 ug, daily
Levoxyl
Dosage: 100 ug, daily
Levoxyl
Dosage: 150 ug, daily
Levoxyl
Dosage: 50 ug, daily
Indication: Thyroid Disorder
Levoxyl
Dosage: 200 ug, 1x/day
Start date: 2012-07-01
Toviaz
Dosage: unk
Other drugs received by patient: Coumadin; Zocor; Atenolol; Tricor; Synthroid; Lisinopril
Possible Levoxyl side effects in 55 year old female
Reported by a consumer/non-health professional from United States on 2012-08-06
Patient: 55 year old female, weighing 81.6 kg (179.5 pounds)
Reactions: Agitation, Anxiety, Dysphagia, Palpitations
Drug(s) suspected as cause:
Levoxyl
Dosage: 0.088 mg, unk
End date: 2012-05-01
Levoxyl
Dosage: unk
Levoxyl
Dosage: 100 ug, unk
Indication: Hypothyroidism
Levoxyl
Dosage: 0.088 mg, once
Start date: 2012-05-16
Possible Levoxyl side effects in 53 year old female
Reported by a consumer/non-health professional from United States on 2012-08-06
Patient: 53 year old female, weighing 81.6 kg (179.6 pounds)
Reactions: Thyroid Function Test Abnormal
Drug(s) suspected as cause:
Levoxyl
Other drugs received by patient: Glucophage
Possible Levoxyl side effects in 44 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-08-06
Patient: 44 year old female
Reactions: Myalgia, Dyspepsia, Arthralgia, Headache, Rash
Drug(s) suspected as cause:
Levothyroxine Sodium
Dosage: 100 ug, unk
Start date: 2006-01-01
End date: 2011-01-01
Levoxyl
Dosage: 100 ug, unk
Start date: 2011-01-01
Possible Levoxyl side effects in 49 year old male
Reported by a physician from United States on 2012-08-06
Patient: 49 year old male, weighing 98.9 kg (217.5 pounds)
Reactions: Weight Increased, Cognitive Disorder, Sluggishness
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in 54 year old female
Reported by a consumer/non-health professional from United States on 2012-08-03
Patient: 54 year old female, weighing 82.0 kg (180.4 pounds)
Reactions: Agitation, Dysphagia, Tremor, Anxiety, Palpitations, Thyroid Disorder, Eye Disorder, Feeling Abnormal, Nervousness
Drug(s) suspected as cause:
Levoxyl
Dosage: 100 ug, 1x/day
Administration route: Oral
Indication: Hypothyroidism
Start date: 2005-01-01
Levoxyl
Dosage: 88 ug, 1x/day
Administration route: Oral
Start date: 2010-01-01
End date: 2012-01-01
Levoxyl
Dosage: unk
Start date: 2012-02-01
Other drugs received by patient: Glucophage
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-02
Patient: female
Reactions: Nasopharyngitis, Mood Altered, Thyroid Disorder, Cough
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-02
Patient: female, weighing 90.7 kg (199.5 pounds)
Reactions: Respiratory Rate Increased, Pollakiuria, Feeling Abnormal, Nervousness
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-01
Patient: female, weighing 86.2 kg (189.6 pounds)
Reactions: Confusional State, Nasopharyngitis, Drug Ineffective, Malaise, Fatigue, Mood Altered, Thyroid Disorder, Dizziness, Feeling Abnormal, Asthenia, Cough
Drug(s) suspected as cause:
Levoxyl
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-01
Patient: female
Reactions: Heart Rate Increased
Drug(s) suspected as cause:
Levothyroxine Sodium
Dosage: unk
Levoxyl
Dosage: 25 ug, unk
Possible Levoxyl side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-01
Patient: female, weighing 65.8 kg (144.7 pounds)
Reactions: Cataract, Pain in Extremity, Optic Ischaemic Neuropathy, Ocular Vascular Disorder, Visual Impairment, Insomnia, Pollakiuria, Carpal Tunnel Syndrome
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Levoxyl
Dosage: 50 ug, daily
Indication: Thyroid Disorder
Levoxyl
Dosage: 150 ug, daily
Levoxyl
Dosage: 100 ug, daily
Levoxyl
Dosage: 75 ug, daily
Levoxyl
Dosage: 200 ug, daily
Toviaz
Dosage: unk
Other drugs received by patient: Coumadin; Synthroid; Atenolol; Zocor; Lisinopril; Tricor
Possible Levoxyl side effects in 71 year old female
Reported by a consumer/non-health professional from United States on 2012-08-01
Patient: 71 year old female, weighing 88.5 kg (194.6 pounds)
Reactions: Abnormal Dreams, Tinnitus, Balance Disorder, Sleep Disorder, Vertigo, Headache
Drug(s) suspected as cause:
Levothyroxine Generic OF Synthroid 25-75 MG
Dosage: 25mg-75mg daily via tricare
Indication: Hypothyroidism
Levoxyl
Dosage: 25 mg-75mg daily tricare
Indication: Hypothyroidism
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