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Thyrax Side Effects

Common Thyrax Side Effects


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

Caesarean Section (1)
Blood Thrombin Increased (1)
Meconium In Amniotic Fluid (1)
Nausea (1)
Coagulation Factor Ix Level Increased (1)
Coagulation Factor Viii Level Increased (1)
Hyponatraemia (1)
Death (1)
Coagulation Factor X Level Increased (1)
Overdose (1)
Von Willebrand's Factor Activity Increased (1)
Suicide Attempt (1)
Retinal Tear (1)
Plasminogen Activator Inhibitor Increased (1)
Teeth Brittle (1)
Vaginal Disorder (1)
Vitreous Disorder (1)
Visual Impairment (1)
Vision Blurred (1)
Bladder Disorder (1)

➢ 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.

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.

Thyrax Side Effects Reported to FDA

The following Thyrax 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.


The appearance of Thyrax 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.
Caesarean Section, Meconium In Amniotic Fluid, Maternal Exposure During Pregnancy
This is a report of a 25-year-old female patient (weight: NA) from NETHERLANDS, suffering from the following symptoms/conditions: NA, who was treated with Thyrax (levothyroxine (levothyroxine) (dosage: NA, start time: Jun 01, 2011), combined with:
  • Colesevelam Hydrochloride (625 Mg (625 Mg, Qd), Per Oral)
and developed a serious reaction and side effect(s). The consumer presented with:
  • Caesarean Section
  • Meconium In Amniotic Fluid
  • Maternal Exposure During Pregnancy
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Thyrax (levothyroxine (levothyroxine) treatment in female patients, resulting in caesarean section side effect.

Teeth Brittle
This report suggests a potential Thyrax Teeth Brittle side effect(s) that can have serious consequences. A 55-year-old female patient (weight: NA) from NETHERLANDS was diagnosed with the following symptoms/conditions: NA and used Thyrax (dosage: 0.025 Mg, 1x/day) starting Nov 13, 1997. Soon after starting Thyrax the patient began experiencing various side effects, including:
  • Teeth Brittle
Drugs used concurrently:
  • Fosamax (70 Mg, Weekly)
  • Calcium Carbonate (1 Df, 1x/day)
  • Hydrocortisone Sodium Succinate (10 Mg, 1x/day)
  • Calcium Carbonate (1000 Mg, 1x/day)
  • Norditropin (Unk)
  • Pentasa (Unk)
Although Thyrax demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as teeth brittle, may still occur.

Hyponatraemia
This Hyponatraemia problem was reported by a health professional from DENMARK. A 86-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On Mar 11, 2010 this consumer started treatment with Thyrax (dosage: NA). The following drugs were being taken at the same time:
  • Lyrica
  • Furosemide
  • Mirtazapine (15 Mg;qd;)
  • Enalapril Maleate
  • Mirtazapine (15 Mg;qd;)
When commencing Thyrax, the patient experienced the following unwanted symptoms/side effects:
  • Hyponatraemia
The patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as hyponatraemia, may become evident only after a product is in use by the general population.

Visual Impairment, Lacrimation Increased, Bladder Disorder, Vaginal Disorder, Vitreous Disorder, Retinal Tear, Vision Blurred, Nausea
This is a report of a 60-year-old female patient (weight: NA) from NETHERLANDS. The patient developed the following symptoms/conditions: autoimmune thyroiditis and was treated with Thyrax (dosage: NA) starting Jan 01, 2011. Concurrently used drugs:
  • Oxazepam
  • Zopiclone
  • St. John's Wort
  • Varenicline Tartrate (Unk)
Soon after that, the consumer experienced the following side effects:
  • Visual Impairment
  • Lacrimation Increased
  • Bladder Disorder
  • Vaginal Disorder
  • Vitreous Disorder
  • Retinal Tear
  • Vision Blurred
  • Nausea
This opens a possibility that Thyrax treatment could cause the above reactions, including visual impairment, and some female subjects may be more susceptible.



A 65-year-old male patient (weight: NA) from NETHERLANDS with the following symptoms/conditions: hypothyroidism,hypogonadism,hypopituitarism started Thyrax treatment (dosage: 200 Ug, Unk) on Jan 12, 1999. Soon after starting Thyrax treatment, the subject experienced various side effects, including:
    Concurrently used drugs:
    • Androgel (50 Mg, 1x/day)
    • Hidrocortizon (30 Mg, 2x/day)
    • Somatropin (0.3 Mg, 1x/day)
    This finding indicates that some male patients could be more vulnerable to Thyrax.

    Blood Thrombin Increased, Coagulation Factor Ix Level Increased, Coagulation Factor Viii Level Increased, Coagulation Factor X Level Increased, Overdose, Plasminogen Activator Inhibitor Increased, Suicide Attempt, Von Willebrand's Factor Activity Increased, Von Willebrand's Factor Antigen Increased
    A 23-year-old female patient from NETHERLANDS (weight: NA) experienced symptoms, such as: hypothyroidism and was treated with Thyrax (levothyroxine)(dosage: 25 Mg Once (250 Tablets Of 100 Mcg Each), Oral). The treatment was initiated on Oct 17, 2008. After that a consumer reported the following side effect(s):
    • Blood Thrombin Increased
    • Coagulation Factor Ix Level Increased
    • Coagulation Factor Viii Level Increased
    • Coagulation Factor X Level Increased
    • Overdose
    • Plasminogen Activator Inhibitor Increased
    • Suicide Attempt
    • Von Willebrand's Factor Activity Increased
    • Von Willebrand's Factor Antigen Increased
    Concurrently used drugs, which potentially could have contributed to side effect(s) or affected Thyrax (levothyroxine) efficacy: NA.The patient was hospitalized.



    Keep Track of Side Effects

    Note Your Observations

    It is really important to keep of your 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

    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.


    Discuss Thyrax Side Effects

    Did You Have a Thyrax Side Effect?

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    Thyrax Safety Alerts, Active Ingredients, Usage Information

    More About Thyrax

    Side Effects reported to FDA: 6

    Thyrax safety alerts: No

    Reported deaths: 1

    Reported hospitalizations: 1

    Latest Thyrax clinical trials