510(k) · Cleared
ClearedThroat Moi-Stir
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Kingswood Laboratories, Inc. · LFD Saliva, Artificial
Cleared on May 25, 1984 after a 91-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 3 later devices descend from it.
- Decided
- May 25, 1984
- Review
- 91 days
- Class
- Class U
- Product code
- LFD
- Recalls
- None
- Predicates
- 0
3 later devices descend from it, 1 citing it directly.
- This deviceK840807 Throat Moi-StirKingswood Laboratories, Inc. · 1984
- Descendant · cites it directly · 2 of its ownK091419 Vicks Powershot Dry Throat & Mouth ReliefThe Procter & Gamble Co. · 2009
- Descendant · 2 generations on · 1 of its ownK110116 Xeros Dry Mouth PumpLorin Technologies Corporation · 2011
- Descendant · 3 generations on · 0 of its ownK173808 Voutia™Jeffrey Ward Cash, Dds · 2018
Most influential descendants
Showing 3 of 3 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K840807 | Throat Moi-Stir | Kingswood Laboratories, Inc. | 1984 | — |
| +1 | K091419 | Vicks Powershot Dry Throat & Mouth Relief | The Procter & Gamble Co. | 2009 | — |
| +2 | K110116 | Xeros Dry Mouth Pump | Lorin Technologies Corporation | 2011 | — |
| +3 | K173808 | Voutia™ | Jeffrey Ward Cash, Dds | 2018 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2009 | 1 | 0 |
| 2011 | 1 | 0 |
| 2018 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in LFD? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new LFD device
- #1 K253778 Allday Moisturizing Rinsescore 11.2 · 2 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (3)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K091419 | Vicks Powershot Dry Throat & Mouth Relief | 2009 | 2 |
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K091419 (The Procter & Gamble Co., 2009) has gone furthest, with 2 descendants of its own.
How does its category compare?
All LFD devicesLFD Saliva, Artificial: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · LFD
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · LFD
287in 2019
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LFD
1in 2013
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LFD
11in 2025
MAUDE reports naming product code LFD, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 2 | — | 1 | 2 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 3 | 83 | 0 | 0 |
| 2010 | 1 | — | 0 | 1 |
| 2011 | 3 | 209 | 0 | 5 |
| 2012 | 2 | — | 0 | 7 |
| 2013 | 2 | — | 1 | 37 |
| 2014 | 0 | — | 0 | 19 |
| 2015 | 5 | 156 | 0 | 28 |
| 2016 | 0 | — | 0 | 68 |
| 2017 | 3 | 231 | 0 | 51 |
| 2018 | 5 | 210 | 0 | 37 |
| 2019 | 3 | 287 | 0 | 40 |
| 2020 | 1 | — | 0 | 34 |
| 2021 | 2 | — | 0 | 30 |
| 2022 | 0 | — | 0 | 15 |
| 2023 | 1 | — | 0 | 10 |
| 2024 | 2 | — | 0 | 14 |
| 2025 | 1 | — | 0 | 11 |
| 2026 | 1 | — | 0 | — |
https://510kreport.com/device/K840807 · printed Nov 4, 2026
Cite this page
510(k) Report. “K840807: Throat Moi-Stir.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K840807
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026