Common Levaxin Side Effects


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

Blood Thyroid Stimulating Hormone Increased (2)
Haemoglobin Decreased (2)
Hypothyroidism (2)
Feeling Cold (2)
Subdural Haematoma (1)
Malignant Melanoma (1)
Injury (1)
Bleeding Time Prolonged (1)


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.

Levaxin Side Effects Reported to FDA


Levaxin Side Effect Report#5355778-X
Malignant Melanoma
This is a report of a 59-year-old female patient (weight: NA) from Sweden, suffering from the following health symptoms/conditions: NA, who was treated with Levaxin (dosage: 0.15 Mg, Daily (1/d), start time:
Jun 20, 2005), combined with:
  • Citalopram Hydrobromide (20 Mg, Daily (1/d))
  • Kalcipos-d (1 Tablet /d)
  • Teriparatide (20 Ug, Daily (1/d))
and developed a serious reaction and side effect(s): Malignant Melanoma after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Levaxin treatment in female patients, resulting in Malignant Melanoma side effect.
Levaxin Side Effect Report#5217956-X
Blood Thyroid Stimulating Hormone Increased, Feeling Cold, Haemoglobin Decreased, Hypothyroidism
This report suggests a potential Levaxin Blood Thyroid Stimulating Hormone Increased side effect(s) that can have serious consequences. A 61-year-old female patient (weight: NA) from Norway was diagnosed with the following symptoms/conditions: hypothyroidism,gastrointestinal stromal tumour and used Levaxin (dosage: NA) starting
Oct 24, 2006. After starting Levaxin the patient began experiencing various side effects, including: Blood Thyroid Stimulating Hormone Increased, Feeling Cold, Haemoglobin Decreased, HypothyroidismAdditional drugs used concurrently:
  • Gleevec (400 Mg/day)
Although Levaxin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Blood Thyroid Stimulating Hormone Increased, may still occur.
Levaxin Side Effect Report#5209187-4
Blood Thyroid Stimulating Hormone Increased, Feeling Cold, Haemoglobin Decreased, Hypothyroidism
This Blood Thyroid Stimulating Hormone Increased problem was reported by a physician from Norway. A 61-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypothyroidism,gastrointestinal stromal tumour. On
Oct 24, 2006 this consumer started treatment with Levaxin (dosage: NA). The following drugs were being taken at the same time:
  • Gleevec (400 Mg/day)
When using Levaxin, the patient experienced the following unwanted symptoms/side effects: Blood Thyroid Stimulating Hormone Increased, Feeling Cold, Haemoglobin Decreased, HypothyroidismAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Blood Thyroid Stimulating Hormone Increased, may become evident only after a product is in use by the general population.
Levaxin Side Effect Report#4980242-7
Bleeding Time Prolonged, Injury, Subdural Haematoma
This Bleeding Time Prolonged side effect was reported by a physician from Sweden. A 12-year-old male patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Levaxin (drug dosage: 0.05 Mg, Qd), which was initiated on
Nov 01, 2005. Concurrently used drugs:
  • Sandimmune (50 Mg/day)
  • Prednisolone (10 Mg Every Second Day)
  • Geavir (400 Mg/day)
  • Eusaprim Forte (6 Mg Trim./30 Mg Sulf/kg 2 Days Per Wk)
  • Gleevec (400 Mg/day)
  • Gleevec (600 Mg/day)
.After starting to take Levaxin the consumer reported adverse symptoms, such as: Bleeding Time Prolonged, Injury, Subdural HaematomaThese side effects may potentially be related to Levaxin. The patient was hospitalized.



The appearance of Levaxin 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 Levaxin Side Effects for Women?

Women Side Effects Reports
Blood Thyroid Stimulating Hormone Increased 2
Feeling Cold 2
Haemoglobin Decreased 2
Hypothyroidism 2
Malignant Melanoma 1

What are common Levaxin Side Effects for Men?

Men Side Effects Reports
Bleeding Time Prolonged 1
Injury 1
Subdural Haematoma 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.

    Levaxin 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.

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