Can you crush or split levothyroxine?
The answer belongs to the form, not the drug name. An extended-release tablet meters the dose out over hours; crushing it delivers the whole day at once. Match the product below to the one on your box — if yours is not listed, read its own label.
What each label says
The label allows it, in the terms quoted
“Administer levothyroxine sodium tablets to pediatric patients who cannot swallow intact tablets by crushing the tablet, suspending the freshly crushed tablet in a small amount (5 to 10 mL) of water and immediately administering the suspension by spoon or dropper.”
On the label for Levothyroxine sodium · DailyMed
The label allows it, in the terms quoted
“Levothyroxine Sodium Tablets, USP may be administered to infants and children who cannot swallow intact tablets by crushing the tablet and suspending the freshly crushed tablet in a small amount (5-10 mL or 1-2 teaspoons) of water.”
On the label for Levothyroxine Sodium · DailyMed
The label allows it, in the terms quoted
“Administer SYNTHROID to pediatric patients who cannot swallow intact tablets by crushing the tablet, suspending the freshly crushed tablet in a small amount (5 to 10 mL) of water and immediately administering the suspension by spoon or dropper.”
On the label for Synthroid · DailyMed
Frequently asked questions
Can you crush levothyroxine?
It depends on which levothyroxine product you have, which is why this page quotes each label separately rather than answering for the drug name. The labels we read permit it in the terms quoted above.
Why does it depend on the form and not the drug?
Because the restriction is built into the tablet, not the molecule. Extended-release and enteric-coated tablets carry a coating or matrix that meters the dose out over hours; crushing destroys it and delivers everything immediately. The same drug in an immediate-release tablet often has no such restriction, which is why a list of drug names cannot answer this question and a quoted label can.
What if I can't swallow the tablet?
Ask the prescriber or pharmacist rather than crushing it anyway — most drugs that cannot be crushed exist in another form (liquid, dispersible tablet, patch, or an immediate-release version taken more often) and switching is usually straightforward. Some labels explicitly describe an alternative, and where they do it is quoted above.
More on levothyroxine
Quoted from FDA labels for reference, not medical advice. Never crush or split a tablet against its label to make it easier to take — ask the prescriber or pharmacist, because an alternative form usually exists.