---
type: "Bill"
title: "A bill for an act relating to controlled substances and precursor substances, including amending the controlled substance and precursor substances schedules and including effective date provisions. (Formerly HSB 74.) Effective date: 05/10/2021."
description: "A bill for an act relating to controlled substances and precursor substances, including amending the controlled substance and precursor substances schedules and including effective date provisions. (Formerly HSB 74.) Effective date: 05/10/2021."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2021-2022"
identifier: "HF 391"
citation: "Iowa HF 391 (2021-2022)"
classification: ["bill"]
subjects: ["controlled substances", "drugs", "marijuana", "narcotics"]
status: "enacted"
primary_sponsors: []
version_count: 5
action_count: 25
vote_count: 3
first_action: "2021-02-04"
last_action: "2021-05-10"
source: "openstates"
source_identifier: "ocd-bill/03cb8624-855a-4e17-adfb-bbda044a555d"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 391&ga=89"
source_hash: "d47f58655f8dfab830f906598f00a2d9de4b36d2c4cbc96b4cc29a29c1181b20"
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-ia"]
---

# Iowa HF 391 (2021-2022) — A bill for an act relating to controlled substances and precursor substances, including amending the controlled substance and precursor substances schedules and including effective date provisions. (Formerly HSB 74.) Effective date: 05/10/2021.

## Version chain

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

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/89/attachments/HF391.html)
2. **Amendment H-1409** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/H1409.pdf)
3. **Amendment S-3159** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/S3159.pdf)
4. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/Attachments/HF391_GovLetter.pdf)
5. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/attachments/HF391.html)

## Votes

- Shall the bill pass? — **92–2** (pass) · lower
- Shall the bill pass? — **91–2** (pass) · lower
- Shall the bill pass? — **46–0** (pass) · upper

## Timeline

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

- **2021-02-04** Introduced, placed on calendar. `introduction`
- **2021-02-10** Passed House, yeas 92, nays 2. `passage`
- **2021-02-11** Explanation of vote.
- **2021-02-10** Immediate message.
- **2021-02-11** Message from House.
- **2021-02-11** Read first time, referred to Judiciary. `reading-1`
- **2021-02-17** Subcommittee: Zaun, Bolkcom, and Shipley.
- **2021-02-22** Subcommittee Meeting: 02/24/2021 11:00AM RM 24A.
- **2021-02-24** Subcommittee recommends passage.
- **2021-03-02** Committee report, recommending passage. `committee-passage`
- **2021-04-08** Placed on calendar under unfinished business.
- **2021-04-20** Amendment S-3159 filed. `amendment-introduction`
- **2021-04-21** Amendment S-3159 adopted. `amendment-passage`
- **2021-04-21** Passed Senate, yeas 46, nays 0. `passage`
- **2021-04-21** Immediate message.
- **2021-04-21** Message from Senate.
- **2021-04-21** Senate amendment H-1409 filed.
- **2021-04-27** House concurred in Senate amendment H-1409.
- **2021-04-27** Passed House, yeas 91, nays 2. `passage`
- **2021-04-28** Explanation of vote.
- **2021-05-06** Explanation of vote.
- **2021-04-27** Immediate message.
- **2021-04-28** Message from House.
- **2021-05-10** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2021-05-10** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/03cb8624-855a-4e17-adfb-bbda044a555d`. Confidence: reported (aggregated from official Iowa legislature records).