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Halazepam

This article is a stubmissing:
Subjective Effects
Pharmacology
Tolerance
History & Culture
Halazepam molecule structureHalazepam molecule structure
Paxipam, Alapryl, Pacinone

Dosage & Duration

Dosage

Doses are population estimates that vary widely between individuals.

Threshold~10 mg
Light10-20 mg
Moderate20-40 mg
Strong40-80 mg
Heavy80+ mg

Duration

Onset15-45 minutes
After Effects12-40 hours
Total8-14 hours

Subjective Effects

Subjective Effects not written up yet

Pharmacology

Pharmacology not written up yet

Interactions

Dangerous

Highest risk

These combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.

AlcoholGHB/GBLOpioidsTramadol

Unsafe

Avoid

There is considerable risk of physical harm when taking these combinations, they should be avoided where possible.

DiphenhydraminePCP

Caution

Use caution

These combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.

DXMKetamineMXE
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Tolerance

Tolerance not written up yet

Harm Potential

Addiction & Dependence

Psychological

Moderate

Classified as habit-forming. Like other benzodiazepines, halazepam carries risk of psychological dependence with regular use.

Physical

Moderate

As a benzodiazepine, physical dependence can develop with chronic use, potentially leading to withdrawal symptoms upon discontinuation.

Toxicity

Central Nervous System

Adverse effects including drowsiness, confusion, dizziness, and sedation occur at therapeutic and recreational doses; amnesia may be induced at higher doses.

Gastrointestinal

Gastrointestinal side effects including dry mouth and nausea have been reported.

History & Culture

History & Culture not written up yet

Legality

By Country

Illegal1
United States flagUnited StatesIllegal

References

Source Pages

  1. DrugBank
  2. DrugBank: Halazepam and its major metabolite
  3. PsychonautWiki: Benzodiazepines
  4. PsychonautWiki: Dangerous Combinations
  5. Sellers EM et al. (1998) Current Psychotherapeutic Drugs (2nd ed.)
  6. TripSit Wiki: Uncommon Benzodiazepines
  7. TripSit: Drug Combinations Wiki
  8. Wikipedia

Citations

  1. DEA Controlled Substances—Alphabetical Order (27-Aug-26). deadiversion.usdoj.gov (n.d.). https://www.deadiversion.usdoj.gov/schedules/orangebook/c_cs_alpha.pdf1
  2. 21 C.F.R. § 1308.14—Schedule IV (April 1, 2025 edition). govinfo.gov (n.d.). https://www.govinfo.gov/content/pkg/CFR-2025-title21-vol9/xml/CFR-2025-title21-vol9-sec1308-14.xml1
  3. Schedules of Controlled Substances: Placement of Cipepofol in Schedule IV, 91 Fed. Reg. 55259. govinfo.gov (n.d.). https://www.govinfo.gov/content/pkg/FR-2026-08-27/pdf/2026-17536.pdf1
  4. DEA Scheduling Actions—Chronological Order (27-Aug-26). deadiversion.usdoj.gov (n.d.). https://www.deadiversion.usdoj.gov/schedules/orangebook/b_sched_chron.pdf1
  5. Placement of Halazepam in Schedule IV, 46 Fed. Reg. 53407. govinfo.gov (n.d.). https://www.govinfo.gov/content/pkg/FR-1981-10-29/pdf/FR-1981-10-29.pdf1
  6. 21 U.S.C. § 841—Prohibited acts A. uscode.house.gov (n.d.). https://uscode.house.gov/view.xhtml?req=granuleid%3AUSC-prelim-title21-section841&num=0&edition=prelim1
  7. 21 U.S.C. § 844—Penalties for simple possession. uscode.house.gov (n.d.). https://uscode.house.gov/view.xhtml?req=granuleid%3AUSC-prelim-title21-section844&num=0&edition=prelim1
  8. openFDA Drugs@FDA record for NDA 017736 (Paxipam/halazepam). api.fda.gov (n.d.). https://api.fda.gov/drug/drugsfda.json?search=application_number%3A%22NDA017736%221

Further Reading

  1. FP Notebook: Diazepam (Benzodiazepine Equivalents)
  2. Medtigo: Halazepam Dosing & Uses
  3. PubMed: Abuse potential of halazepam and diazepam
  4. Tripsitter: Halazepam Fact Sheet & Harm Reduction Guide

Article Status

  • Josie Kins avatar
    Step 1 · Automated synthesis

    An autonomous workflow built by Josie Kins compiled this article's foundation from information published across the web.

  • Step 2 · First-pass reviewPending

    Not yet reviewed — this article is pending editorial review by Lyrea.

  • Step 3 · Citation reviewPending

    No one has reviewed this article's citations yet. That second pass checks each claim against the source it cites.

Recent changes7 human edits · latest

Times are UTCNewest first

24 January 2026

  1. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  2. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  3. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  4. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  5. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  6. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

  7. Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more

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