This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Cytomel (Liothyronine) 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 (67)
Life Threatening Events (1)
Reports by Reaction Type
Drug Ineffective (14),
Alopecia (10),
Feeling Abnormal (10),
Fatigue (7),
Headache (6),
Dizziness (6),
Anxiety (6),
Weight Increased (5),
Dyspnoea (5),
Nausea (5),
DRY Skin (5),
Heart Rate Increased (5)
Below are a few examples of reports where side effects / adverse reactions may be related to Cytomel (Liothyronine). For a complete list or a specific selection of reports, please use the links above.
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: female
Reactions: Nausea, Headache
Drug(s) suspected as cause:
Cytomel
Dosage: unk
Administration route: Oral
Cytomel
Dosage: unk
Administration route: Oral
Possible Cytomel 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:
Levoxyl
Dosage: unk
Administration route: Oral
Cytomel
Dosage: unk
Administration route: Oral
Possible Cytomel side effects in 40 year old male
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: 40 year old male, weighing 70.3 kg (154.6 pounds)
Reactions: Drug Ineffective, Hypothyroidism
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: female
Reactions: Nausea, Headache
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in 59 year old female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: 59 year old female
Reactions: Hair Texture Abnormal, Alopecia, Trichorrhexis
Drug(s) suspected as cause:
Cytomel
Other drugs received by patient: Synthroid; Multi-Vitamin
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: female
Reactions: Drug Ineffective
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: female
Reactions: Nausea, Headache, Energy Increased
Drug(s) suspected as cause:
Cytomel
Other drugs received by patient: Synthroid
Possible Cytomel side effects in female
Reported by a pharmacist from United States on 2012-08-07
Patient: female
Reactions: Rash
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in 43 year old female
Reported by a consumer/non-health professional from United States on 2012-08-07
Patient: 43 year old female, weighing 64.4 kg (141.7 pounds)
Reactions: Viral Infection, Drug Ineffective, Blood Thyroid Stimulating Hormone Decreased, DRY Skin, Hyperhidrosis, Tremor, Anxiety, TRI-Iodothyronine Increased, Heart Rate Increased, Hypothyroidism, Hyperthyroidism
Drug(s) suspected as cause:
Cytomel
Dosage: 100 ug, 1x/day
Start date: 2010-01-01
End date: 2010-02-01
Cytomel
Dosage: 75 ug, 1x/day
Start date: 2010-02-01
End date: 2010-02-01
Cytomel
Dosage: 75 ug, 1x/day
Indication: Hypothyroidism
Start date: 2009-12-27
End date: 2010-01-01
Cytomel
Dosage: 50 ug, 1x/day
Start date: 2010-02-23
Caffeine Citrate
Dosage: unk
Other drugs received by patient: Klonopin; Levonorgestrel + Ethinyl Estradiol; Wellbutrin
Possible Cytomel side effects in
Reported by a consumer/non-health professional from United States on 2012-07-30
Patient:
Reactions: Weight Decreased
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-07-24
Patient: female, weighing 105.0 kg (231.0 pounds)
Reactions: Intervertebral Disc Protrusion, Limb Discomfort, Peroneal Nerve Palsy, Intervertebral Disc Degeneration, Nervous System Disorder, Hypertension, Back Disorder
Drug(s) suspected as cause:
Cytomel
Dosage: 5 ug, 2x/day
Administration route: Oral
Indication: Hypothyroidism
Start date: 2002-01-01
Cytomel
Dosage: unk
Administration route: Oral
Possible Cytomel side effects in female
Reported by a physician from United States on 2012-07-13
Patient: female, weighing 49.9 kg (109.8 pounds)
Reactions: Weight Increased, Hypothyroidism, Muscle Spasms, Hypersomnia
Drug(s) suspected as cause:
Cytomel
Other drugs received by patient: Levoxyl
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-07-11
Patient: female, weighing 74.4 kg (163.6 pounds)
Reactions: Drug Ineffective, Insomnia, Blood Thyroid Stimulating Hormone Increased
Drug(s) suspected as cause:
Cytomel
Dosage: unk
Administration route: Oral
Indication: Hypothyroidism
Ambien
Dosage: unk
Indication: Insomnia
Sonata
Dosage: unk
Indication: Insomnia
Acetaminophen
Dosage: unk
Indication: Insomnia
Lunesta
Dosage: unk
Indication: Insomnia
Synthroid
Dosage: 75 ug, unk
Administration route: Oral
Indication: Hypothyroidism
Synthroid
Dosage: unk
Administration route: Oral
Possible Cytomel side effects in 54 year old male
Reported by a physician from United States on 2012-07-03
Patient: 54 year old male, weighing 95.0 kg (209.0 pounds)
Reactions: Atrial Fibrillation
Drug(s) suspected as cause:
Cytomel
Dosage: 100 mcg
Indication: Generalised Resistance To Thyroid Hormone
Levothroid
Dosage: 200 mcg
Indication: Generalised Resistance To Thyroid Hormone
Other drugs received by patient: Albuterol; Verapamil; Theophylline; Terazosin HCL
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-06-26
Patient: female
Reactions: Alopecia
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-06-26
Patient: female
Reactions: Alopecia
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-06-20
Patient: female
Reactions: Thyroxine Decreased
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-06-07
Patient: female, weighing 49.9 kg (109.8 pounds)
Reactions: Weight Increased, Hypothyroidism, Hypersomnia, Muscle Spasms
Drug(s) suspected as cause:
Cytomel
Other drugs received by patient: Levoxyl
Possible Cytomel side effects in 73 year old female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-06-05
Patient: 73 year old female
Reactions: Contusion, Drug Ineffective, Condition Aggravated, Blood Thyroid Stimulating Hormone Increased, DRY Skin, Thinking Abnormal, Heart Rate Increased, Alopecia, Heart Rate Irregular, Feeling Abnormal, Sluggishness
Drug(s) suspected as cause:
Thyroid TAB
Dosage: 90 mg, unk
Thyroid TAB
Dosage: 60 mg, 2x/day
Cytomel
Dosage: unk
Indication: Hypothyroidism
Thyroid TAB
Dosage: 60 mg, 1x/day
Indication: Hypothyroidism
Start date: 2009-01-01
Pradaxa
Dosage: unk
Indication: Heart Rate Increased
Start date: 2011-11-01
Other drugs received by patient: Fish OIL
Possible Cytomel side effects in 73 year old female
Reported by a consumer/non-health professional from United States on 2012-05-23
Patient: 73 year old female
Reactions: Contusion, Drug Ineffective, Blood Thyroid Stimulating Hormone Increased, DRY Skin, Thinking Abnormal, Heart Rate Increased, Alopecia, Heart Rate Irregular, Feeling Abnormal, Sluggishness
Drug(s) suspected as cause:
Cytomel
Indication: Hypothyroidism
Pradaxa
Indication: Heart Rate Increased
Start date: 2011-11-01
Thyroid TAB
Dosage: 60 mg
Thyroid TAB
Dosage: 60 mg
Indication: Hypothyroidism
Start date: 2009-01-01
Thyroid TAB
Dosage: 90 mg
Thyroid TAB
Dosage: 120 mg
Other drugs received by patient: Vitamins NOS; Fish OIL
Possible Cytomel side effects in female
Reported by a pharmacist from United States on 2012-05-21
Patient: female, weighing 79.4 kg (174.7 pounds)
Reactions: Vomiting, Nausea, Vertigo, Dizziness, Gait Disturbance
Drug(s) suspected as cause:
Cytomel
Dosage: 2.5 ug (half tablet of 5mcg), 1x/day
Administration route: Oral
Indication: Thyroid Disorder
Start date: 2012-05-11
End date: 2012-05-12
Levoxyl
Dosage: unk
Indication: Thyroid Disorder
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-05-21
Patient: female, weighing 61.3 kg (134.8 pounds)
Reactions: Hypersensitivity, Drug Ineffective, DRY Skin, Somnolence, Skin Fissures, Pruritus Generalised, Weight Increased, Fatigue, Fibromyalgia, Alopecia, Hypothyroidism, Blood Cholesterol Increased, Eye Swelling, Heart Rate Irregular, Hypertension
Drug(s) suspected as cause:
Synthroid
Indication: Hypothyroidism
Start date: 2000-01-01
End date: 2010-01-01
Cytomel
Indication: Hypothyroidism
Start date: 2010-01-01
Levothyroxine Sodium
Indication: Hypothyroidism
Liothyronine Sodium
Dosage: 75mcg, daily at night
Indication: Hypothyroidism
Start date: 2012-04-23
Possible Cytomel side effects in 54 year old male
Reported by a physician from United States on 2012-05-08
Patient: 54 year old male, weighing 95.0 kg (209.0 pounds)
Reactions: Atrial Fibrillation
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Cytomel
Other drugs received by patient: Albuterol; Verapamil; Levothyroxine; Terazosin
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-05-01
Patient: female, weighing 61.0 kg (134.2 pounds)
Reactions: Eyelid Oedema, Hypersensitivity, Drug Ineffective, Urticaria, DRY Skin, Somnolence, Pruritus Generalised, Fatigue, Joint Crepitation, Fibromyalgia, Alopecia, Blood Cholesterol Increased, Weight Fluctuation, Hypertension, Heart Rate Abnormal
Drug(s) suspected as cause:
Levothyroxine Sodium
Dosage: unk
Indication: Hypothyroidism
Cytomel
Dosage: 25 ug, 8x/day
Indication: Hypothyroidism
Start date: 2010-01-01
Levothyroxine Sodium
Dosage: 75 ug, daily
Indication: Hypothyroidism
Start date: 2012-04-23
Synthroid
Dosage: unk, 2x/day
Indication: Hypothyroidism
Start date: 2002-01-01
End date: 2010-01-01
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-04-26
Patient: female
Reactions: Inflammation
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a health professional (non-physician/pharmacist) from United States on 2012-04-24
Patient: female
Reactions: Anxiety, Maternal Exposure During Pregnancy, Premature Labour
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Topamax
Administration route: Oral
Indication: Migraine
Start date: 2002-04-01
Amoxicillin
Indication: Urinary Tract Infection
Duragesic-100
Indication: Pain
Synthroid
Administration route: Oral
Indication: Goitre
Lortab
Indication: Pain
Macrodantin
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Atenolol
Administration route: Oral
Indication: Hypertension
Cytomel
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Phenobarbital TAB
Indication: Eclampsia
Doxylamine Succinate
Indication: Product Used FOR Unknown Indication
Effexor
Administration route: Oral
Indication: Fibromyalgia
Start date: 2002-01-01
End date: 2002-08-01
Soma
Administration route: Oral
Indication: Pain
Possible Cytomel side effects in female
Reported by a lawyer from United States on 2012-04-23
Patient: female
Reactions: Anxiety, Maternal Exposure During Pregnancy, Premature Labour
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Cytomel
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Topamax
Administration route: Oral
Indication: Migraine
Start date: 2002-04-01
Effexor
Administration route: Oral
Indication: Fibromyalgia
Start date: 2002-01-01
End date: 2002-08-01
Atenolol
Administration route: Oral
Indication: Hypertension
Phenobarbital TAB
Indication: Eclampsia
Synthroid
Administration route: Oral
Indication: Goitre
Duragesic-100
Indication: Pain
Doxylamine Succinate
Indication: Product Used FOR Unknown Indication
Lortab
Indication: Pain
Amoxicillin
Indication: Urinary Tract Infection
Soma
Administration route: Oral
Indication: Pain
Macrodantin
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Cytomel side effects in male
Reported by a health professional (non-physician/pharmacist) from United States on 2012-04-20
Patient: male
Reactions: Anxiety, Mitral Valve Disease, Premature Baby, Fallot's Tetralogy
Adverse event resulted in: life threatening event, hospitalization
Drug(s) suspected as cause:
Doxylamine Succinate
Indication: Foetal Exposure During Pregnancy
Phenobarbital TAB
Indication: Foetal Exposure During Pregnancy
Cytomel
Indication: Foetal Exposure During Pregnancy
Synthroid
Indication: Foetal Exposure During Pregnancy
Atenolol
Indication: Foetal Exposure During Pregnancy
Amoxicillin
Indication: Foetal Exposure During Pregnancy
Topamax
Indication: Foetal Exposure During Pregnancy
Start date: 2002-04-01
Duragesic-100
Indication: Foetal Exposure During Pregnancy
Start date: 2002-08-01
End date: 2003-04-01
Effexor
Indication: Foetal Exposure During Pregnancy
Start date: 2002-01-01
End date: 2002-08-01
Macrodantin
Indication: Foetal Exposure During Pregnancy
Soma
Indication: Foetal Exposure During Pregnancy
Lortab
Indication: Foetal Exposure During Pregnancy
Possible Cytomel side effects in
Reported by a consumer/non-health professional from United States on 2012-04-10
Patient:
Reactions: Back Pain, Arthralgia
Drug(s) suspected as cause:
Cytomel
Possible Cytomel side effects in female
Reported by a consumer/non-health professional from United States on 2012-04-09
Patient: female
Reactions: Drug Ineffective
Drug(s) suspected as cause:
Cytomel
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