Thyroid hormone replacement
Levothyroxine and pregnancy: what we know
Pregnancy and breastfeeding are special periods where every medication choice deserves careful review. Levothyroxine (Levothyroxine) is no exception. The prescribing information for Levothyroxine provides specific guidance, and the right decision depends on the indication, alternatives, gestational stage and the woman's overall medical picture.
Pregnancy safety data for Levothyroxine
According to the prescribing information for Levothyroxine, the available human data in pregnancy may be limited, supportive, or restrictive depending on the molecule. Some Thyroid hormone replacement agents are routinely used in pregnancy when needed; others are avoided. The risk-benefit calculation includes the importance of treating the underlying condition and the consequences of leaving it untreated.
Breastfeeding considerations
Breastfeeding considerations are usually separate from pregnancy considerations. Some active ingredients pass into breast milk in negligible amounts; others are present at levels that warrant caution. Levothyroxine replaces deficient endogenous thyroxine, which is converted in tissues to the active hormone triiodothyronine (T3) by deiodinase enzymes. The prescriber weighs the benefit of breastfeeding, the importance of Levothyroxine, and the availability of alternative therapies.
Frequently asked questions
Can I take Levothyroxine during pregnancy? ▾
Whether Levothyroxine can be taken in pregnancy depends on the active ingredient Levothyroxine, the indication and the gestational stage. The prescribing information should be consulted, and any pregnancy or planned pregnancy should be discussed with the prescriber before starting or continuing Levothyroxine at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg.
Will Levothyroxine affect my baby? ▾
Effects on the fetus or breastfed infant depend on whether the active ingredient Levothyroxine crosses the placenta or enters breast milk and at what concentrations. Most decisions are individualised; some women continue Levothyroxine during pregnancy when benefits clearly outweigh known risks, others switch.
Products containing Levothyroxine
More on Levothyroxine
- With alcoholLevothyroxine and alcohol — is it safe to drink?
- With foodShould Levothyroxine be taken with food?
- Side effectsLevothyroxine side effects: common, rare and warning signs
- Dosage guideLevothyroxine dosage guide: how much to take and when
- OnsetHow fast does Levothyroxine start working?
- DurationHow long does Levothyroxine last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.