Efficacy and safety of postoperative levothyroxine sodium tablets for improving serum thyroid hormone levels and tumor marker levels in patients with thyroid tumors


Submitted: 11 July 2023
Accepted: 15 July 2023
Published: 5 September 2023
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Authors

  • Dingji Hao Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Linxiao Tian Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Haoting He Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Congru Zhu Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Lili Guo Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Keao Zhang Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.
  • Jie Zhang Department of Oncology, Tonglu County Hospital of Traditional Chinese Medicine, Tonglu, Zhejiang, China.

Levothyroxine tablet has been used for improving serum thyroid hormones. Despite its efficacy, there has been a persistent recurrence. We aimed to evaluate the efficacy of levothyroxine regimen (administered as sodium tablets or liquid) therapy, including the regime in combination with other thyroxine hormones, to determine its effectiveness and safety regarding thyroid tumor patient outcomes. An electronic search of the online databases (PubMed, EMBASE, and Web of Science) was performed in duplicate independently by two authors (SSK and LPY) to identify any potential studies published in the English language from January 2002 to October 2022. The records were retrieved using keywords and MeSH terms. The Cochrane risk of bias tool in the Review Manager (RevMan software version 5.4.) was used to evaluate the risk of bias in the included studies.  A total of 18 quality studies were reported on levothyroxine tablets. Results showed that liquid levothyroxine was more efficient than tablet levothyroxine. Further results showed that levothyroxine in combination with L-T3 or I-131 was more effective than L-T4 tablet monotherapy for improving thyroid cancer hormones. Levothyroxine tablet monotherapy is less efficient than liquid levothyroxine and/or levothyroxine combined therapy. This research recommends future research using larger randomized controlled studies.


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