Thyroid hormone replacement
What to do if Levothyroxine is in shortage
Drug shortages happen periodically — manufacturing issues, supply chain disruptions, regulatory holds — and Levothyroxine (Levothyroxine) may become temporarily unavailable in some pharmacies or countries. For chronic users at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg, knowing how to handle a shortage prevents unnecessary treatment interruption.
How shortages work for Levothyroxine
When Levothyroxine is in shortage, the pharmacist usually has several options: dispense an authorised generic of Levothyroxine, source from a different manufacturer of the same active ingredient, suggest a different formulation (e.g. liquid, dispersible) or, in extended shortages, ask the prescriber to consider an alternative Thyroid hormone replacement agent. Levothyroxine replaces deficient endogenous thyroxine, which is converted in tissues to the active hormone triiodothyronine (T3) by deiodinase enzymes.
Practical steps
According to general pharmacy practice, the first step in a Levothyroxine shortage is to ask the pharmacist about authorised generic availability — most shortages affect a single brand or strength, not the entire supply of Levothyroxine at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg. The prescriber should be informed if the pharmacist needs to substitute or change formulation. Stockpiling or buying extra outside regulated channels is not the right response.
Frequently asked questions
What do I do if my pharmacy doesn't have Levothyroxine? ▾
Ask the pharmacist whether an authorised generic of Levothyroxine is available — usually yes — or whether another pharmacy in the area has stock of Levothyroxine at 25mcg, 50mcg, 75mcg, 100mcg, 150mcg. The pharmacist can also contact the prescriber if a formulation switch is needed.
Will Levothyroxine come back in stock? ▾
Most shortages are resolved within weeks to months as manufacturing or supply issues are fixed. Until then, the authorised generic of Levothyroxine is the standard alternative and is clinically equivalent to Levothyroxine at the same 25mcg, 50mcg, 75mcg, 100mcg, 150mcg strength.
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.