---
type: "Bill"
title: "Allow use of expired opioid antagonists"
description: "Allow use of expired opioid antagonists"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 503"
citation: "Montana SB 503 (2025)"
classification: ["bill"]
subjects: ["Education - K-12", "Health", "Health Care Services", "Mental Illness or Incapacity", "Professions and Occupations Generally", "Safety"]
status: "enacted"
primary_sponsors: ["Cora Neumann"]
version_count: 22
action_count: 37
vote_count: 6
first_action: "2024-12-14T21:10:54+00:00"
last_action: "2025-05-13T13:48:56+00:00"
source: "openstates"
source_identifier: "ocd-bill/b6f62a24-a327-42d6-94de-1b0dfca7953d"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC3716?open_tab=sum"
source_hash: "a61e4910175ad83f219eb21ef87e96a3cdc1d612863633bc0d9b5d2b6b5e5426"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana SB 503 (2025) — Allow use of expired opioid antagonists

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **LC3716.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285347)
2. **SB0503_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=288816)
3. **SB0503_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293548)
4. **SB0503_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293710)
5. **SB0503_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298538)
6. **SB0503_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309269)
7. **SB0503_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309271)
8. **SB0503_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287801)
9. **SB0503_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309273)
10. **SB0503_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322694)
11. **SB0503_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322695)
12. **SB0503_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322696)
13. **SB0503_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324957)
14. **SB0503_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309274)
15. **SB0503_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309434)
16. **SB0503_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309435)
17. **SB0503_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309638)
18. **SB0503_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309639)
19. **SB0503_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310995)
20. **SB0503_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316931)
21. **SB0503_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320506)
22. **SB0503_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309272)

## Votes

- be_concurred_in — **21–0** (pass) · lower
- do_pass — **9–2** (pass) · upper
- Do Pass — **44–6** (pass) · upper
- Do Pass — **42–7** (pass) · upper
- Do Concur — **93–7** (pass) · lower
- Do Concur — **94–5** (pass) · lower

## Sponsors

- Cora Neumann — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-12-14T21:10:54+00:00** (LC) Drafter Assigned
- **2024-12-24T21:48:33+00:00** (LC) Draft On Hold
- **2025-01-27T17:13:51+00:00** (LC) Draft Taken Off Hold
- **2025-02-17T16:32:56+00:00** (LC) Draft in Legal Review
- **2025-02-18T00:05:54+00:00** (LC) Draft in Edit
- **2025-02-21T06:13:43+00:00** (LC) Draft in Input/Proofing
- **2025-02-21T19:31:54+00:00** (LC) Draft in Final Drafter Review
- **2025-02-21T21:28:15+00:00** (LC) Draft in Assembly
- **2025-02-22T15:28:16+00:00** (LC) Draft Ready for Delivery
- **2025-02-25T16:48:26+00:00** (LC) Draft Delivered to Requester
- **2025-02-25T22:03:05+00:00** (S) Introduced
- **2025-02-26T20:27:22+00:00** (S) First Reading `reading-1`
- **2025-02-26T20:31:00+00:00** (S) Referred to Committee - (S) Public Health, Welfare and Safety `referral-committee`
- **2025-02-27T21:27:12+00:00** (S) Hearing - (S) Public Health, Welfare and Safety
- **2025-03-04T03:29:07+00:00** (S) Committee Executive Action--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
- **2025-03-04T20:06:00+00:00** (S) Committee Report--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
- **2025-03-06T15:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-06T18:46:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-07T00:30:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-07T02:02:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-03-07T16:19:08+00:00** (S) Transmitted to House
- **2025-03-17T15:26:51+00:00** (H) Referred to Committee - (H) Human Services `referral-committee`
- **2025-03-17T19:15:00+00:00** (H) First Reading `reading-1`
- **2025-03-19T19:14:24+00:00** (H) Hearing - (H) Human Services
- **2025-03-26T00:00:46+00:00** (H) Committee Executive Action--Bill Concurred - (H) Human Services
- **2025-03-26T19:25:00+00:00** (H) Committee Report--Bill Concurred - (H) Human Services
- **2025-04-11T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-11T19:14:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T21:01:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-12T00:00:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T00:00:27+00:00** (S) Sent to Enrolling
- **2025-04-13T17:04:47+00:00** (S) Returned from Enrolling
- **2025-04-21T22:00:00+00:00** (S) Signed by President `passage`
- **2025-04-29T22:15:14+00:00** (H) Signed by Speaker `passage`
- **2025-04-30T16:55:55+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-08T14:34:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-13T13:48:56+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b6f62a24-a327-42d6-94de-1b0dfca7953d`. Confidence: reported (aggregated from official Montana legislature records).