Levothyroxine — Drug Interactions, Alcohol & Pregnancy Guide

Last reviewed: · Source: US FDA drug label database

About Levothyroxine

Levothyroxine is the standard treatment for hypothyroidism. It must be taken on an empty stomach, 30-60 minutes before food, and separated from calcium, iron, and antacids by at least 2-4 hours. Dose requirements increase in pregnancy.

Also sold as: Synthroid, Eltroxin, Euthyrox

Drug class Thyroid hormone replacement
Used for Hypothyroidism (underactive thyroid)
Max adult dose Individualised; typically 50-200mcg once daily
OTC in UK Prescription only

Levothyroxine and Alcohol

🟡 USE WITH CAUTION

Light alcohol use is generally tolerated with levothyroxine, but regular drinking can impair thyroid function and reduce medication effectiveness.

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Levothyroxine in Pregnancy

🟢 GENERALLY SAFE

Levothyroxine is safe and essential to continue in pregnancy — hypothyroidism must be well-controlled for healthy fetal development.

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Levothyroxine — Drug Combinations

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