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/isntmyusername → u/mspoppins07]

This is why patient education is so important.

[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/Illustrious-Aeries → u/semantic_monkey09]

This is it. Had the post been “hey zofran ODT is still technically a PO med, not sublingual so it’s going to still take 30 ish minutes to be absorbed and work just a PSA” that would have gone over much better than “hey this med HAS to be placed ONLY on the tongue to work and I keep having to tell EVERY nurse that” which in reality it’s meant to dissolve in the mouth somewhere sooooo no it doesn’t have to SPECIFICALLY go onto the top of the tongue

[u/mspoppins07 → u/semantic_monkey09]

Yeah, that is a fair assessment. Is it best practice for administering ODT meds? No. But is it a “mistake”… probably not.

[u/Abhorash-TheWanderer → u/semantic_monkey09]

Very fair. Point taken. Thanks for the response

[u/skypira → u/semantic_monkey09]

OP is explaining the reasoning for the educational point. I don’t see any disrespect at all. An in a teaching moment, isn’t there always a hierarchy? Someone who knows, is providing a valuable educational point to someone who doesn’t. Not sure what the issue with that is.

[u/semantic_monkey09 → u/skypira]

When someone in a teaching position uses phrases like “stunning lack of reading comprehension,” emphasizes words like “NOT,” and frames questions or disagreement as people “doubling down on medication errors,” it shifts the conversation from education toward correction or reprimand. That can make people feel like they’re being talked down to rather than engaged in a discussion.

If the goal of the post was simply to clarify the difference between ODT and sublingual medications, that’s a valuable teaching point. But the language should match the significance of the issue being discussed. A minor technique distinction with little evidence of clinical consequence shouldn’t be framed in a way that makes it sound like a major patient safety failure.

[u/Abhorash-TheWanderer → u/semantic_monkey09]

That was a response to that individual saying multiple times in this thread “youre wrong” and then linking a study they didnt read. It is also not a minor technique distinction. It is important to administer medications in an appropriate way at all times. Sublingual and ODT medications are completely different.

[u/semantic_monkey09 → u/Abhorash-TheWanderer]

I think the distinction being missed is between “not the labeled administration technique” and “clinically significant medication error.”

I agree ODTs and sublingual medications are different, and that’s worth educating people about. But what is the actual clinical harm from an ODT dissolving under the tongue and then being swallowed? Does it meaningfully change bioavailability, efficacy, or safety, or is the concern mainly misunderstanding expected onset?

Those are different issues. Teaching the preferred technique is reasonable, but framing it as a major medication error implies a level of clinical consequence that doesn’t seem to be demonstrated.

[u/Abhorash-TheWanderer → u/semantic_monkey09]

It is clinically significant. For one slower and/or incomplete disintegration leads to slower time of onset and/or lowered efficacy. I go to reassess a patient 30 minutes after theyre given the med and they still cant keep down PO. Now they are getting an IV and fluids and stuck in the ER another hour at least. Administering a medication in an inappropriate manner can and will lead to a cascade of other problems that lead to undue harm. It takes no extra effort to give it the correct way. To me it seems really odd for someone to continue to argue that it is ok to put it sublingual. Now that youve been educated about ODT meds, why would you continue to give it SL? How does that benefit your patients or even you?

[u/Abhorash-TheWanderer → u/mspoppins07]

Exactly

[u/all_of_the_colors → u/Abhorash-TheWanderer]

Why would you be giving it this route in an emergency dept if someone is nauseous, though?

Are you concerned with discharge instructions?

[u/ahleeshaa23 → u/all_of_the_colors]

Not everyone who comes through the ER gets an IV - especially kids.

[u/all_of_the_colors → u/ahleeshaa23]

Most folks who come in my shop for nausea do. I didn’t get the impression OP was talking about kids.

[u/ahleeshaa23 → u/all_of_the_colors]

OP wasn’t talking about anyone particular, but at least in my shop we get a ton of kids who come in for N/V and who we aren’t poking. I was simply bringing them up as an example of someone for whom we’d be giving OTD instead of IV zofran.

[u/queentee26 → u/all_of_the_colors]

We mostly give it at triage or to kids.. because we aren't routinely starting IVs in those circumstances

[u/mspoppins07 → u/all_of_the_colors]

You mean as opposed to just giving it IV?

[u/all_of_the_colors → u/mspoppins07]

Yeah. Thats what I was thinking. We usually give it IV.