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Cytomel Side Effects

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Common Cytomel Side Effects


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

Feeling Abnormal (26)
Fatigue (23)
Dyspnoea (18)
Alopecia (16)
Pain (15)
Arthralgia (13)
Tremor (13)
Dizziness (11)
Asthenia (10)
Constipation (10)
Headache (10)
Hypothyroidism (9)
Palpitations (8)
Nausea (8)
Pruritus (8)
Oedema Peripheral (8)
Tri-iodothyronine Increased (8)
Weight Increased (8)
Urticaria (8)
Rash (8)

➢ 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.

Cytomel Side Effects Reported to FDA



Cytomel Side Effect Report#9869563
Fatigue, Feeling Abnormal, Weight Increased
This is a report of a 65-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: hypothyroidism, who was treated with Cytomel (dosage: Unk, start time: 2013), combined with:
  • Levothyroxine Sodium (Unk)
and developed a serious reaction and side effect(s): Fatigue, Feeling Abnormal, Weight Increased after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Fatigue side effect.
Cytomel Side Effect Report#9819337
Chest Pain, Autoimmune Thyroiditis, Feeling Abnormal, Urticaria, Scar, Weight Increased
This report suggests a potential Cytomel Chest Pain side effect(s) that can have serious consequences. A 56-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Cytomel (dosage: Unk) starting NS. After starting Cytomel the patient began experiencing various side effects, including: Chest Pain, Autoimmune Thyroiditis, Feeling Abnormal, Urticaria, Scar, Weight IncreasedAdditional drugs used concurrently:
  • Synthroid (Unk)
  • Armour Thyroid (Unk)
  • Tirosint (75 Ug, Unk)
The patient was hospitalized. Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Chest Pain, may still occur.
Cytomel Side Effect Report#9788247
Autoimmune Thyroiditis, Condition Aggravated, Antibody Test Abnormal, Gastrointestinal Disorder, Rash
This Autoimmune Thyroiditis problem was reported by a consumer or non-health professional from US. A 50-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypothyroidism. On 2013 this consumer started treatment with Cytomel (dosage: 5 Ug, 2x/day). The following drugs were being taken at the same time: NA. When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Autoimmune Thyroiditis, Condition Aggravated, Antibody Test Abnormal, Gastrointestinal Disorder, RashAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Autoimmune Thyroiditis, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9754374
Abdominal Pain Upper
This Abdominal Pain Upper side effect was reported by a consumer or non-health professional from US. A 69-year-old female patient (weight:NA) experienced the following symptoms/conditions: hypothyroidism.The patient was prescribed Cytomel (drug dosage: 5 Ug, 2x/day), which was initiated on
Dec 09, 2013. Concurrently used drugs:
  • Synthroid (75 Ug, 1x/day)
.After starting to take Cytomel the consumer reported adverse symptoms, such as: Abdominal Pain UpperThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#9721328
Alopecia
This is a report of a 55-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: hypothyroidism, who was treated with Cytomel (dosage: 5 Mg, Daily (5 Mg, 1 In 1 D), start time: 2013), combined with:
  • Armour Thyroid (30 Mg, Daily (30mg, 1 In 1 D))
  • Armour Thyroid (60 Mg, Daily (60 Mg, 1 In 1 D))
and developed a serious reaction and side effect(s): Alopecia after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Alopecia side effect.
Cytomel Side Effect Report#9721172
Skin Fissures, Lip Exfoliation, Chapped Lips
This report suggests a potential Cytomel Skin Fissures side effect(s) that can have serious consequences. A 42-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: hypothyroidism and used Cytomel (dosage: 25 Ug, Unk) starting NS. After starting Cytomel the patient began experiencing various side effects, including: Skin Fissures, Lip Exfoliation, Chapped LipsAdditional drugs used concurrently: NA. Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Skin Fissures, may still occur.
Cytomel Side Effect Report#9695892
Tri-iodothyronine Increased, Cardiac Disorder, Product Quality Issue, Blood Test Abnormal
This Tri-iodothyronine Increased problem was reported by a consumer or non-health professional from US. A 54-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypothyroidism. On NS this consumer started treatment with Cytomel (dosage: 50 Mcg Twice Daily Taken By Mouth). The following drugs were being taken at the same time: NA. When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Tri-iodothyronine Increased, Cardiac Disorder, Product Quality Issue, Blood Test AbnormalAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Tri-iodothyronine Increased, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9520932
Paraesthesia, Weight Increased, Alopecia, Bowel Movement Irregularity, Muscle Spasms, Eye Swelling, Local Swelling, Constipation
This Paraesthesia side effect was reported by a physician from US. A 46-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Cytomel (drug dosage: 10 Ug (daily), 1x/day), which was initiated on 2009. Concurrently used drugs: NA..After starting to take Cytomel the consumer reported adverse symptoms, such as: Paraesthesia, Weight Increased, Alopecia, Bowel Movement Irregularity, Muscle Spasms, Eye Swelling, Local Swelling, ConstipationThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#9486237
Arthritis, Arthralgia
This is a report of a 59-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: autoimmune thyroiditis,adrenal insufficiency, who was treated with Cytomel (dosage: 10 Ug, 2x/day, start time: NS), combined with:
  • Hydrocortisone (12.5 Mg, 1x/day)
and developed a serious reaction and side effect(s): Arthritis, Arthralgia after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Arthritis side effect.
Cytomel Side Effect Report#9466272
Arthralgia, Limb Discomfort, Tendon Disorder
This report suggests a potential Cytomel Arthralgia side effect(s) that can have serious consequences. A 72-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: thyroid disorder and used Cytomel (dosage: 2.5 Ug, 1x/day) starting 201306. After starting Cytomel the patient began experiencing various side effects, including: Arthralgia, Limb Discomfort, Tendon DisorderAdditional drugs used concurrently: NA. Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Arthralgia, may still occur.
Cytomel Side Effect Report#9407359
Coeliac Disease, Gastrointestinal Disorder, Malabsorption, Weight Decreased, Food Allergy, Malaise
This Coeliac Disease problem was reported by a consumer or non-health professional from US. A 45-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: thyroid function test abnormal,polycystic ovaries,hypothyroidism. On 2013 this consumer started treatment with Cytomel (dosage: 2.5 Ug, 2x/day). The following drugs were being taken at the same time:
  • Metformin Hcl (250 Mg, 2x/day)
  • Synthroid (90 Ug, 1x/day)
When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Coeliac Disease, Gastrointestinal Disorder, Malabsorption, Weight Decreased, Food Allergy, MalaiseAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Coeliac Disease, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9401215
Abdominal Discomfort
This Abdominal Discomfort side effect was reported by a consumer or non-health professional from US. A 55-year-old female patient (weight:NA) experienced the following symptoms/conditions: thyroid disorder,autoimmune thyroiditis.The patient was prescribed Cytomel (drug dosage: 30 Ug (by Taking 25mcg Tablet And 5mcg At A Time), 1x/day), which was initiated on
Jul 11, 2013. Concurrently used drugs: NA..After starting to take Cytomel the consumer reported adverse symptoms, such as: Abdominal DiscomfortThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#9381240
Feeling Abnormal, Pruritus, Wheezing
This is a report of a 52-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: hypothyroidism, who was treated with Cytomel (dosage: 10 Ug, 2x/day, start time: 201306), combined with: NA. and developed a serious reaction and side effect(s): Feeling Abnormal, Pruritus, Wheezing after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Feeling Abnormal side effect.
Cytomel Side Effect Report#9353264
Sluggishness, Fatigue
This report suggests a potential Cytomel Sluggishness side effect(s) that can have serious consequences. A 45-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Cytomel (dosage: 10 Ug, 2x/day) starting 2003. After starting Cytomel the patient began experiencing various side effects, including: Sluggishness, FatigueAdditional drugs used concurrently:
  • Synthroid (75 Ug, 1x/day)
  • Metformin (Unk)
  • Lovaza (Unk)
Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Sluggishness, may still occur.
Cytomel Side Effect Report#9333266
Coeliac Disease, Abdominal Pain
This Coeliac Disease problem was reported by a consumer or non-health professional from US. A 35-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: autoimmune thyroiditis. On
May 31, 2013 this consumer started treatment with Cytomel (dosage: 10 Mg, 1x/day). The following drugs were being taken at the same time:
  • Synthroid (Unk)
When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Coeliac Disease, Abdominal PainAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Coeliac Disease, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9311640
Palpitations
This Palpitations side effect was reported by a health professional from US. A 50-year-old female patient (weight:NA) experienced the following symptoms/conditions: thyroid disorder.The patient was prescribed Cytomel (drug dosage: 25 Ug, 1x/day), which was initiated on 1992. Concurrently used drugs: NA..After starting to take Cytomel the consumer reported adverse symptoms, such as: PalpitationsThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#9290671
Arthralgia, Blood Thyroid Stimulating Hormone Increased
This is a report of a 54-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: hypothyroidism, who was treated with Cytomel (dosage: 05 Ug, 1x/day, start time: NS), combined with:
  • Levoxyl (100 Ug, 1x/day)
and developed a serious reaction and side effect(s): Arthralgia, Blood Thyroid Stimulating Hormone Increased after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Arthralgia side effect.
Cytomel Side Effect Report#9271698
Aggression, Anger, Abnormal Behaviour
This report suggests a potential Cytomel Aggression side effect(s) that can have serious consequences. A 14-year-old male patient (weight: NA) from US was diagnosed with the following symptoms/conditions: autoimmune thyroiditis and used Cytomel (dosage: 10 Ug, 1x/day) starting
Feb 28, 2013. After starting Cytomel the patient began experiencing various side effects, including: Aggression, Anger, Abnormal BehaviourAdditional drugs used concurrently:
  • Levoxyl (25 Mcg And 37.5 Mcg, Alternate Day)
  • Armour Thyroid (15 Mg, Daily)
  • Clarinex (10 Ug, 1x/day)
Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Aggression, may still occur.
Cytomel Side Effect Report#9117445
Throat Tightness
This Throat Tightness problem was reported by a consumer or non-health professional from US. A 67-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypothyroidism. On
Feb 11, 2013 this consumer started treatment with Cytomel (dosage: 5 Ug, 2x/day). The following drugs were being taken at the same time: NA. When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Throat TightnessAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Throat Tightness, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9116953
Thyrotoxic Crisis, Hormone Level Abnormal, Pruritus, Urticaria
This Thyrotoxic Crisis side effect was reported by a consumer or non-health professional from US. A 67-year-old female patient (weight:NA) experienced the following symptoms/conditions: hypothyroidism,fatigue,toxicity to various agents.The patient was prescribed Cytomel (drug dosage: Unk), which was initiated on 2012. Concurrently used drugs: NA..After starting to take Cytomel the consumer reported adverse symptoms, such as: Thyrotoxic Crisis, Hormone Level Abnormal, Pruritus, UrticariaThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#9107870
Thyroid Disorder
This is a report of a 71-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: NA, who was treated with Cytomel (dosage: Unk, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Thyroid Disorder after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Thyroid Disorder side effect.
Cytomel Side Effect Report#9087576
Thyroxine Decreased, Blood Thyroid Stimulating Hormone Decreased
This report suggests a potential Cytomel Thyroxine Decreased side effect(s) that can have serious consequences. A 42-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: tri-iodothyronine decreased and used Cytomel (dosage: 25 Ug, Daily) starting 2012. After starting Cytomel the patient began experiencing various side effects, including: Thyroxine Decreased, Blood Thyroid Stimulating Hormone DecreasedAdditional drugs used concurrently: NA. Although Cytomel demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Thyroxine Decreased, may still occur.
Cytomel Side Effect Report#9057552
Fatigue, Depression, Insomnia, Quality Of Life Decreased, Impaired Work Ability, Nervousness, Tension, Malaise, Pain
This Fatigue problem was reported by a consumer or non-health professional from US. A 66-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypothyroidism. On
Jan 20, 2013 this consumer started treatment with Cytomel (dosage: NA). The following drugs were being taken at the same time: NA. When using Cytomel, the patient experienced the following unwanted symptoms/side effects: Fatigue, Depression, Insomnia, Quality Of Life Decreased, Impaired Work Ability, Nervousness, Tension, Malaise, PainAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Fatigue, may become evident only after a product is in use by the general population.
Cytomel Side Effect Report#9049507
Angina Pectoris, Tri-iodothyronine Increased, Tremor, Nervousness
This Angina Pectoris side effect was reported by a physician from US. A 59-year-old female patient (weight:NA) experienced the following symptoms/conditions: basedow^s disease.The patient was prescribed Cytomel (drug dosage: 50 Ug, Daily), which was initiated on NS. Concurrently used drugs: NA..After starting to take Cytomel the consumer reported adverse symptoms, such as: Angina Pectoris, Tri-iodothyronine Increased, Tremor, NervousnessThese side effects may potentially be related to Cytomel.
Cytomel Side Effect Report#8922614
Dyspnoea, Dermatitis Allergic
This is a report of a 46-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: thyroid disorder,hypothyroidism, who was treated with Cytomel (dosage: 5 Ug, Daily, start time:
Sep 17, 2012), combined with: NA. and developed a serious reaction and side effect(s): Dyspnoea, Dermatitis Allergic after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Cytomel treatment in female patients, resulting in Dyspnoea side effect.


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The appearance of Cytomel 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.

What are common Cytomel Side Effects for Women?

Women Side EffectsReports
Feeling Abnormal 24
Fatigue 22
Dyspnoea 18
Pain 15
Alopecia 14
Arthralgia 13
Tremor 13
Dizziness 11
Constipation 10
Headache 10

What are common Cytomel Side Effects for Men?

Men Side EffectsReports
Asthenia 3
Malaise 3
Alopecia 2
Body Temperature Decreased 2
Coeliac Disease 2
Feeling Abnormal 2
Oedema 2
Oedema Peripheral 2
Weight Increased 2
Abasia 1

Track Your Side Effects

Note Your Observations

It is really important to keep track of your health 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

    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.

    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.

    Cytomel 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.

    Discuss Cytomel Side Effects

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    How Effective is Cytomel for You?

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    Cytomel Safety Alerts, Active Ingredients, Usage Information

    NDC54569-2053
    TypeHUMAN PRESCRIPTION DRUG
    Proprietary NameCytomel
    NameLIOTHYRONINE SODIUM
    Dosage FormTABLET
    RouteORAL
    On market since19560508
    LabelerA-S Medication Solutions LLC
    Active Ingredient(s)LIOTHYRONINE SODIUM
    Strength(s)25
    Unit(s)ug/1
    Pharma Classl-Triiodothyronine [EPC],Triiodothyronine [Chemical/Ingredient]

    Cytomel Dosage, Warnings, Usage.

    Side Effects reported to FDA: 191

    Cytomel safety alerts: No

    Reported deaths: 2

    Reported hospitalizations: 26

    Latest Cytomel clinical trials