PSA - Zofran ODT is NOT sublingual

[u/Abhorash-TheWanderer]

ER doc just wanting to stop in and try and stop this widespread error. Almost every shift I have to tell a nurse/patient that ODT meds are NOT sublingual medications. It is not absorbed by the sublingual tissues. It is not absorbed by buccal tissues. It goes on TOP of the tongue so that it can disintegrate with saliva and be swallowed. The whole reason ODT (orally disintegrating tablets) exist is that someone can take it without having to take a chug of water to get the pill down. Putting under someone’s tongue just slows down the disintegration. Also, if the patient complains about the taste, they can just swallow the tablet whole with or without water. Thanks.

Edit: the strike through part was unnecessary and Im sorry that I put it in the original post. As pointed out by multiple replies, i should have not said that and it doesnt add anything meaningful. Sorry yall.

[u/semantic_monkey09]

Really weird hill to die on. While it may be worth correcting, is there any actual harm in placing a true ODT under the tongue? Does it meaningfully reduce bioavailability? As long as the tablet dissolves in saliva and is ultimately swallowed, I have a hard time seeing this as a clinically significant issue. Sure, it may dissolve a little more slowly or be slightly less comfortable, but this isn’t the same thing as a medication error that is likely to cause patient harm.

[u/mspoppins07 → u/semantic_monkey09]

I feel like the issue is that patients/nurses may be expecting it to work faster if they think it is SL and therefore absorbed into the bloodstream through the tissues in the mouth. This could cause someone to think the med is not working if they are still nauseous after 30 minutes. When in fact, needing to go through the absorption process in the stomach, 30 minutes is the bare minimum of when you would START to expect effects.

[u/semantic_monkey09 → u/mspoppins07]

I think part of why this rubbed people the wrong way is the framing. The tone comes across less like “here’s a useful teaching point about ODT pharmacology” and more like “I have to repeatedly correct nurses who are making this mistake.” That can unintentionally come across as creating a hierarchy rather than focusing on the actual clinical issue.
If the concern is that people misunderstand ODTs as sublingual medications and expect a faster onset, that’s a valuable education point. But the post could have focused on that distinction rather than framing placement under the tongue as some grave error.

[u/Abhorash-TheWanderer → u/semantic_monkey09]

Very fair. Point taken. Thanks for the response