Indication

Ondansetron for Other

53 sources44 named agencies31 statesas of 2026-10-31

Adult dosing has a median of 4 mg across 50 published protocols, with the middle half between 4 and 4.

53sources

44named agencies

31states

160entries

44named here

Includes 1 agency outside the US.

Doses far off from what other protocols give are likely misreads, so they are left out until checked. How that works.

Adultmg

50sources

42named agencies

29states

91entries

0kept as written

min	p25	median	p75	max
2	4	4	4	8

Values in mg. One value per source (that source's median), so a document listing a medication five times still gets one vote.

Routes

IV 22%
IV/IM 14%
IV/IM/ODT 8%
PO 8%
IV/IM/PO 7%
IM 4%
IV/IO/IM 4%
IM/ODT 3%
IV/IO 3%
IV/IO/IM/PO 3%
IV/ODT 3%
ODT 3%
IV/IO/IM/IN/PO 2%
IV/IO/IM/PO/ODT 2%
IV/PO 2%
SL 2%
IM/PO 1%
IV/IO/IM/IN/ODT 1%
IV/IO/ODT 1%
IV/IO/PO 1%
IV/PO/ODT 1%

United States EMS Protocol Census, n=50 protocols from 42 named agencies / 29 states, updated Oct 2026

Pediatric, weight-basedmg/kg

29sources

23named agencies

22states

37entries

0kept as written

min	p25	median	p75	max
0.1	0.1	0.1	0.15	0.2

Values in mg/kg. One value per source (that source's median), so a document listing a medication five times still gets one vote.

Routes

IV 41%
IV/IM 16%
IV/IO 8%
IM 5%
IV/IO/IM 5%
IV/IO/IM/IN/PO 5%
IV/IO/IM/PO 3%
IV/IO/IM/PO/ODT 3%
IV/IO/PO 3%
IV/PO 3%
IV/PO/ODT 3%
PO 3%
PO/ODT 3%

United States EMS Protocol Census, n=29 protocols from 23 named agencies / 22 states, updated Oct 2026

Pediatricmg

21sources

19named agencies

17states

31entries

0kept as written

min	p25	median	p75	max
2	2	3	4	8

Values in mg. One value per source (that source's median), so a document listing a medication five times still gets one vote.

Routes

IV/IM/ODT 19%
IV 16%
PO 16%
IV/IM 7%
IV/IM/PO/ODT 7%
ODT 7%
IM/PO 3%
IV/IM/PO 3%
IV/IO 3%
IV/IO/IM 3%
IV/IO/IM/PO 3%
IV/ODT 3%
SL 3%
SL/ODT 3%

United States EMS Protocol Census, n=21 protocols from 19 named agencies / 17 states, updated Oct 2026

Adult, weight-basedmg/kg

1sources

0named agencies

1states

1entries

0kept as written

Below 5 sources, so no distribution is published for this group — only the counts above.

Routes

IV/IO 100%

United States EMS Protocol Census, n=1 protocols from 0 named agencies / 1 states, updated Oct 2026

Named agencies with a page44

Agencies whose protocols are a public record are named here. Their own doses are on their own pages; this list carries no values.