Indication

Promethazine for Nausea / vomiting

55 sources47 named agencies23 statesas of 2026-10-31

Adult dosing has a median of 12.5 mg across 55 published protocols, with the middle half between 12.5 and 18.75.

55sources

47named agencies

23states

119entries

47named here

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

Adultmg

55sources

47named agencies

23states

83entries

0kept as written

min	p25	median	p75	max
6.25	12.5	12.5	18.75	25

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

Routes

IM 35%
IV 25%
IV/IM 21%
IV/IO/IM/PO 6%
IM/PO 2%
IM/PR 2%
IV/IM/PO 2%
IV/IO 2%
IV/IO/IM 2%
PO 1%

United States EMS Protocol Census, n=55 protocols from 47 named agencies / 23 states, updated Oct 2026

Pediatric, weight-basedmg/kg

22sources

17named agencies

12states

34entries

0kept as written

min	p25	median	p75	max
0.25	0.25	0.25	0.4688	0.5

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

IM 41%
IV 21%
IV/IM 9%
IV/IO 9%
IV/IO/IM/PO 9%
IM/PR 6%
IM/PO 3%
PO 3%

United States EMS Protocol Census, n=22 protocols from 17 named agencies / 12 states, updated Oct 2026

Adult, weight-basedmg/kg

1sources

1named 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 1 named agencies / 1 states, updated Oct 2026

Pediatricmg

1sources

1named agencies

1states

1entries

0kept as written

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

Routes

IV/IM 100%

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

Named agencies with a page47

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