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Important: This site presents data from the FDA Adverse Event Reporting System (FAERS). A report does not mean the drug caused the event. Full disclaimer.

LEVOTHYROXINE\LEVOTHYROXINE: 936 Adverse Event Reports & Safety Profile

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936
Total FAERS Reports
97 (10.4%)
Deaths Reported
369
Hospitalizations
936
As Primary/Secondary Suspect
97
Life-Threatening
42
Disabilities

Active Ingredient: LEVOTHYROXINE\LEVOTHYROXINE SODIUM ·

First Report: 19670101 · Latest Report: 20240925

What Are the Most Common LEVOTHYROXINE\LEVOTHYROXINE Side Effects?

#1 Most Reported
Drug ineffective
91 reports (9.7%)
#2 Most Reported
Fatigue
64 reports (6.8%)
#3 Most Reported
Dyspnoea
63 reports (6.7%)

All LEVOTHYROXINE\LEVOTHYROXINE Side Effects by Frequency

Side Effect Reports % of Total Deaths Hosp.
Drug ineffective 91 9.7% 11 39
Fatigue 64 6.8% 0 18
Dyspnoea 63 6.7% 8 41
Nausea 62 6.6% 8 15
Headache 58 6.2% 0 23
Toxicity to various agents 49 5.2% 12 38
Off label use 48 5.1% 4 19
Foetal exposure during pregnancy 45 4.8% 2 19
Asthma 41 4.4% 9 28
Diarrhoea 41 4.4% 1 11
Palpitations 40 4.3% 2 9
Vomiting 39 4.2% 8 13
Hypothyroidism 38 4.1% 7 20
Dizziness 37 4.0% 0 16
Hyperthyroidism 36 3.9% 0 7
Anxiety 34 3.6% 6 15
Abdominal pain 33 3.5% 8 17
Maternal exposure during pregnancy 33 3.5% 0 10
Rash 32 3.4% 7 12
Drug interaction 31 3.3% 0 25

Who Reports LEVOTHYROXINE\LEVOTHYROXINE Side Effects? Age & Gender Data

Gender: 76.5% female, 23.5% male. Average age: 59.6 years. Most reports from: US. View detailed demographics →

Is LEVOTHYROXINE\LEVOTHYROXINE Getting Safer? Reports by Year

YearReportsDeathsHosp.
2004 1 0 1
2007 7 0 6
2008 6 0 0
2009 1 0 1
2010 4 0 0
2011 3 0 1
2012 2 2 0
2013 8 0 1
2014 2 0 0
2015 2 0 0
2016 17 7 16
2017 3 2 1
2018 5 2 3
2019 5 0 1
2020 16 0 5
2021 23 3 11
2022 39 11 11
2023 90 3 26
2024 143 6 53

View full timeline →

What Is LEVOTHYROXINE\LEVOTHYROXINE Used For?

IndicationReports
Product used for unknown indication 391
Hypothyroidism 231
Thyroid disorder 40
Autoimmune thyroiditis 29
Graves' disease 18
Suicide attempt 18
Decompensated hypothyroidism 14
Hypopituitarism 13
Post procedural hypothyroidism 11
Osteoporosis 8

LEVOTHYROXINE\LEVOTHYROXINE vs Alternatives: Which Is Safer?

LEVOTHYROXINE\LEVOTHYROXINE vs LEVOTHYROXINE\LIOTHYRONINE LEVOTHYROXINE\LEVOTHYROXINE vs LEVOXYL LEVOTHYROXINE\LEVOTHYROXINE vs LEXAPRO LEVOTHYROXINE\LEVOTHYROXINE vs LEXISCAN LEVOTHYROXINE\LEVOTHYROXINE vs LIALDA LEVOTHYROXINE\LEVOTHYROXINE vs LIDOCAINE LEVOTHYROXINE\LEVOTHYROXINE vs LIDOCAINE\MENTHOL LEVOTHYROXINE\LEVOTHYROXINE vs LIDOCAINE\PRILOCAINE LEVOTHYROXINE\LEVOTHYROXINE vs LIFILEUCEL LEVOTHYROXINE\LEVOTHYROXINE vs LIFITEGRAST

Official FDA Label for LEVOTHYROXINE\LEVOTHYROXINE

Official prescribing information from the FDA-approved drug label.