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D.H.E. 45
Migraine and headache
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Drug Name:

D.H.E. 45 Rx

Generic Name and Formulations:
Dihydroergotamine mesylate 1mg/mL; for IM, IV, or SC inj.

Bausch Health Companies Inc.

Therapeutic Use:

Indications for D.H.E. 45:

Acute treatment of migraine headache or cluster headache episodes.


1mL IV at 1 hour intervals; max 2 doses/day. Or, 1mL IM or SC at 1-hour intervals; max 3 doses/day. For all: max 6 doses/week. Do not use chronically.


Not recommended.


Ischemic heart disease. Coronary artery vasospasm (eg, Prinzmetal's angina) or myocardial ischemia. Peripheral artery disease. Sepsis. Post-vascular surgery. Uncontrolled hypertension. Other significant cardiovascular disease. Severely impaired hepatic or renal function. Basilar or hemiplegic migraine. Concomitant potent CYP3A4 inhibitors (eg, ritonavir, nelfinavir, indinavir, erythromycin, clarithromycin, troleandmycin, ketoconazole, itraconazole) or other vasoconstrictors. Within 24 hours of sumatriptan, zolmitriptan, other 5-HT1 agonists, or ergot-type drugs. Pregnancy (Cat.X). Nursing mothers.


Confirm diagnosis. Exclude underlying cardiovascular disease, supervise 1st dose, and consider monitoring ECG in patients with likelihood of unrecognized coronary disease (eg, postmenopausal women, men over age 40, hypercholesterolemia, hypertension, obesity, diabetes, smokers, strong family history). Monitor cardiovascular function in long-term intermittent use. Compromised circulation. Elderly.

Pharmacological Class:

Ergot alkaloid.


See Contraindications. Potentiated by CYP3A4 inhibitors (eg, protease inhibitors, macrolides, azole antifungals, saquinavir, nefazodone, fluoxetine, fluvoxamine, grapefruit juice, zileuton), propranolol, nicotine.

Adverse Reactions:

Numbness, pain, weakness of extremities, epigastric distress, tachycardia or bradycardia, nausea, vomiting, localized edema and itching, cardiac or cerebrovascular events; myocardial and peripheral vascular ischemia or vasoconstriction (ergotism: discontinue if occurs); rare: fibrotic complication.

How Supplied:

Amps (1 mL)—10

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