Thyroid hormone replacement
Levothyroxine with antidepressants: interactions
Many adults take an antidepressant for mood, anxiety or chronic pain. The combination with Levothyroxine (Levothyroxine) is common and, for most antidepressant classes, well tolerated. A few specific combinations require attention because of additive effects or shared metabolic pathways.
Antidepressant interaction landscape
SSRIs, SNRIs, TCAs, MAOIs and atypical antidepressants each interact differently. SSRIs are the most commonly co-prescribed and usually have minor or no clinically meaningful interaction with Levothyroxine at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg. MAOIs require special caution with many medications. Tricyclics can amplify cardiovascular and sedative effects of some Thyroid hormone replacement agents.
Practical guidance
According to the prescribing information for Levothyroxine, any change in antidepressant therapy should be reviewed alongside Levothyroxine dosing. Switching antidepressants — particularly to or from MAOIs — usually requires a washout period before resuming Levothyroxine at the standard 25mcg, 50mcg, 75mcg, 100mcg, 150mcg schedule.
Frequently asked questions
Can I take Levothyroxine on an SSRI? ▾
For most SSRIs and most Thyroid hormone replacement agents, the combination is acceptable with normal monitoring. A few combinations require dose adjustment or alternative selection. The prescriber confirms based on the specific antidepressant and the active ingredient Levothyroxine.
Are there antidepressants to avoid with Levothyroxine? ▾
MAOIs are the antidepressant class most often flagged for caution with many medications. Other interactions depend on Levothyroxine and the specific antidepressant; a pharmacist review is the practical safeguard at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg.
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.