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Dihydroergotamine

Generic Name
Dihydroergotamine
Brand Names
Dhe-45, Migranal, Trudhesa
Drug Type
Small Molecule
Chemical Formula
C33H37N5O5
CAS Number
511-12-6
Unique Ingredient Identifier
436O5HM03C

Overview

A 9,10alpha-dihydro derivative of ergotamine. Dihydroergotamine is used as an abortive therapy for migraines. Its use has largely been supplanted by triptans in current therapy due to the class's greater selectivity and more favourable side effect profile. Recent improvements have been made in the design of intranasal delivery devices allowing for greater delivery of dihydroergotamine solution to the vasculature-rich upper nasal cavity. The recently approved Precision Olfactory Delivery technology developed by Impel Neuropharma technology has correlated with an increase of 3-fold in Cmax and 4-fold in AUC despite the solution formulated at 75% of the strength of the existing intranasal product.

Indication

Dihydroergotamine (DHE) in all formulations is indicated for the acute treatment of migraine with or without aura in adults. As an injection, DHE is also indicated for the acute treatment of cluster headache episodes. DHE is not indicated for migraine prevention or the management of hemiplegic or basilar migraine.

Associated Conditions

  • Cluster Headache
  • Migraine Headache, With or Without Aura

Research Report

Published: Sep 24, 2025

Dihydroergotamine: A Comprehensive Pharmacological and Clinical Monograph

Executive Summary

Dihydroergotamine (DHE) is a semi-synthetic ergot alkaloid that has been a component of the therapeutic armamentarium for acute headache for over 70 years. Identified by DrugBank ID DB00320 and CAS Number 511-12-6, this small molecule is a derivative of ergotamine, engineered to possess a distinct pharmacological profile characterized by potent, broad-spectrum receptor activity and reduced arterioconstrictor effects compared to its parent compound. This monograph provides an exhaustive analysis of Dihydroergotamine, integrating molecular data, complex pharmacology, clinical evidence, and the global regulatory landscape to present a nuanced understanding of its contemporary role in medicine.

The central thesis of this report is that Dihydroergotamine, a legacy molecule, is undergoing a significant revitalization driven by modern pharmaceutical innovation. Its enduring clinical utility is rooted in a unique, multi-receptor mechanism of action that engages serotonergic, adrenergic, and dopaminergic pathways, offering a powerful therapeutic option for severe and refractory headache disorders, including intractable migraine (status migrainosus) and medication overuse headache, where more selective agents may fail. Historically, its use has been limited by a challenging pharmacokinetic profile—notably poor oral bioavailability and variable absorption from early nasal formulations—and a side-effect profile dominated by nausea.

Continue reading the full research report

Clinical Trials

Title
Posted
Study ID
Phase
Status
Sponsor
2022/04/28
Phase 1
Completed
2022/04/20
Phase 1
Completed
2021/06/25
Phase 3
Completed
2020/05/28
Phase 3
Completed
2019/04/03
Phase 3
Completed
2019/03/21
Phase 2
Terminated
Kimberly S Jones
2019/03/14
Phase 1
Completed
2018/01/17
Phase 1
Completed
Impel Pharmaceuticals
2011/11/09
Phase 1
Completed
2010/09/13
Phase 1
Completed

FDA Drug Approvals

Approved Product
Manufacturer
NDC Code
Route
Strength
Effective Date
Cipla USA Inc.
69097-503
NASAL
4 mg in 1 mL
1/24/2024
Padagis US LLC
0574-0850
SUBCUTANEOUS, INTRAMUSCULAR, INTRAVENOUS
1 mg in 1 mL
8/20/2018
Bausch Health US, LLC
0187-0245
NASAL
4 mg in 1 mL
9/1/2022
Advagen Pharma Ltd
72888-096
NASAL
4 mg in 1 mL
7/5/2023
Hikma Pharmaceuticals USA Inc.
24201-463
NASAL
4 mg in 1 mL
4/24/2023
Gland Pharma Limited
68083-466
INTRAVENOUS, INTRAMUSCULAR, SUBCUTANEOUS
1 mg in 1 mL
8/22/2023
Sagent Pharmaceuticals
25021-609
INTRAVENOUS, INTRAMUSCULAR, SUBCUTANEOUS
1 mg in 1 mL
5/2/2022
Exelan Pharmaceuticals, Inc.
76282-680
NASAL
4 mg in 1 mL
12/10/2020
Hikma Pharmaceuticals USA Inc.
0143-9151
INTRAMUSCULAR, INTRAVENOUS, SUBCUTANEOUS
1 mg in 1 mL
3/17/2023
Provepharm Inc.
81284-411
INTRAVENOUS, INTRAMUSCULAR, SUBCUTANEOUS
1 mg in 1 mL
8/24/2021

EMA Drug Approvals

Approved Product
Authorization Holder
Status
Issued Date
No EMA approvals found for this drug.

HSA Drug Approvals

Approved Product
Manufacturer
Approval Number
Dosage Form
Strength
Approval Date
No HSA approvals found for this drug.

NMPA Drug Approvals

Approved Product
Company
Approval Number
Drug Type
Dosage Form
Approval Date
No NMPA approvals found for this drug.

PPB Drug Approvals

Approved Product
Registration No.
Company
Licence No.
Strength
Registration Date
No PPB approvals found for this drug.

TGA Drug Approvals

Approved Product
ARTG ID
Sponsor
Registration Type
Status
Registration Date
No TGA approvals found for this drug.

Health Canada Drug Approvals

Approved Product
Company
DIN
Dosage Form
Strength
Market Date
DIHYDROERGOTAMINE (DHE), 1MG/ML
Sterimax Inc
00027243
Liquid - Intramuscular ,  Intravenous ,  Subcutaneous
1 MG / ML
12/31/1946
DIHYDROERGOTAMINE MESYLATE INJECTION USP
02241163
Liquid - Subcutaneous ,  Intramuscular ,  Intravenous
1 MG / ML
12/23/1999
MIGRANAL NASAL SPRAY 4MG/ML
Sterimax Inc
02228947
Liquid - Nasal
0.5 MG / ACT
11/5/1996
PMS-DIHYDROERGOTAMINE
02242411
Liquid - Nasal
4 MG / ML
N/A
PMS-DIHYDROERGOTAMINE
02242457
Liquid - Intramuscular ,  Intravenous ,  Subcutaneous
1 MG / ML
N/A

CIMA AEMPS Drug Approvals

Approved Product
Company
Registration Number
Pharmaceutical Form
Prescription Type
Status
No CIMA AEMPS (Spain) approvals found for this drug.

Philippines FDA Drug Approvals

Approved Product
Company
License Number
Dosage Form
Strength
Approval Date
No Philippines FDA approvals found for this drug.

Saudi SFDA Drug Approvals

Approved Product
Company
License Number
Dosage Form
Strength
Approval Date
No Saudi SFDA approvals found for this drug.

Malaysia NPRA Drug Approvals

Approved Product
Company
Registration Number
Dosage Form
Strength
Approval Date
No Malaysia NPRA approvals found for this drug.

UK EMC Drug Information

Medicine Name
MA Holder
MA Number
Pharmaceutical Form
Active Ingredient
Authorization Date
No UK EMC drug information found for this drug.

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