Drug reference
levothyroxine
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Drug class
Endocrine (Thyroid Drugs)
Mechanism of action
Synthetic T4; thyroid hormone increases basal metabolic rate, increases utilization and mobilization of glycogen stores, promotes gluconeogenesis; involved in growth development and stimulates protein synthesis
Common side effects
- Arthralgia
- Angina pectoris
- Palpitation
- Congestive heart failure
- Increased pulse
- Myocardial infarction
Known interactions (7)
- ashwagandha + levothyroxine Moderate
- Biotin + levothyroxine Moderate
- ciprofloxacin + levothyroxine Moderate
- Esomeprazole + levothyroxine Moderate
- levothyroxine + Methylphenidate Moderate
- levothyroxine + multivitamin with minerals Moderate
- levothyroxine + pantoprazole Moderate
Related conditions
Frequently asked questions
What drug class is levothyroxine?
levothyroxine belongs to: Endocrine.
How does levothyroxine work?
Synthetic T4; thyroid hormone increases basal metabolic rate, increases utilization and mobilization of glycogen stores, promotes gluconeogenesis; involved in growth development and stimulates protein synthesis
What are the common side effects of levothyroxine?
Arthralgia, Angina pectoris, Palpitation, Congestive heart failure, Increased pulse, Myocardial infarction
Which drugs interact with levothyroxine?
ashwagandha, Biotin, ciprofloxacin, Esomeprazole, Methylphenidate, multivitamin with minerals, pantoprazole
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