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
on Jun 06, 2012 Female from NETHERLANDS , 25 years of age, was treated with Thyrax (levothyroxine (levothyroxine). Directly after, patient experienced the unwanted or unexpected Thyrax side effects: caesarean section, meconium in amniotic fluid, maternal exposure during pregnancy. Thyrax (levothyroxine (levothyroxine) dosage: N/A.
Associated medications used:
  • Colesevelam Hydrochloride (625 Mg (625 Mg, Qd), Per Oral)

Teeth Brittle
Patient was taking Thyrax. Patient felt the following Thyrax side effects: teeth brittle on Jan 04, 2012 from NETHERLANDS Additional patient health information: Female , 55 years of age, weighting 160.9 lb, . Thyrax dosage: 0.025 Mg, 1x/day.
Multiple prescriptions taken:
  • 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)

Adverse event was reported on Oct 18, 2011 by a Female taking Thyrax (Dosage: N/A) . Location: DENMARK , 86 years of age, After Thyrax was administered, patient encountered several Thyrax side effects: hyponatraemia.
Multiple concurrent drugs taken:
  • Lyrica
  • Furosemide
  • Mirtazapine (15 Mg;qd;)
  • Enalapril Maleate
  • Mirtazapine (15 Mg;qd;)
Patient was hospitalized.

Visual Impairment, Lacrimation Increased, Bladder Disorder, Vaginal Disorder, Vitreous Disorder, Retinal Tear, Vision Blurred, Nausea
on Jul 14, 2011 Female from NETHERLANDS , 60 years of age, was diagnosed with and was treated with Thyrax. Directly after, patient experienced the unwanted or unexpected Thyrax side effects: visual impairment, lacrimation increased, bladder disorder, vaginal disorder, vitreous disorder, retinal tear, vision blurred, nausea. Thyrax dosage: N/A.
Associated medications used:
  • Oxazepam
  • Zopiclone
  • St. John's Wort
  • Varenicline Tartrate (Unk)

on Jun 21, 2011 Male from NETHERLANDS , 65 years of age, weighting 231.5 lb, was diagnosed with and was treated with Thyrax. . Thyrax dosage: 200 Ug, Unk.
Multiple prescriptions taken:
  • Androgel (50 Mg, 1x/day)
  • Hidrocortizon (30 Mg, 2x/day)
  • Somatropin (0.3 Mg, 1x/day)

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
Patient was taking Thyrax (levothyroxine). After Thyrax was administered, patient encountered several Thyrax side effects: 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 on Oct 08, 2010 from NETHERLANDS Additional patient health information: Female , 23 years of age, was diagnosed with and. Thyrax (levothyroxine) dosage: 25 Mg Once (250 Tablets Of 100 Mcg Each), Oral. 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


    Date & Time

    Other Medicine(s) or Treatment(s)





    Scale: 1 = very mild to 10 = very bad

    Track Online

  • User Sign In
  • Register to track your side effects

  • 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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    How Effective is Thyrax for You?

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    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