BREKIYA

WARNING: PERIPHERAL ISCHEMIA FOLLOWING COADMINISTRATION WITH STRONG CYP3A4 INHIBITORS Serious and/or life-threatening peripheral ischemia has been associated with the coadministration of dihydroergotamine with strong CYP3A4 inhibitors. Because CYP3A4 inhibition elevates the serum levels of dihydroergotamine, the risk for vasospasm leading to cerebral ischemia and/or ischemia of the extremities is increased. Hence, concomitant use of BREKIYA with strong CYP3A4 inhibitors is contraindicated [see Contraindications (4) , Warnings and Precautions (5.1) , and Drug Interactions (7.1) ]. WARNING: PERIPHERAL ISCHEMIA FOLLOWING COADMINISTRATION WITH STRONG CYP3A4 INHIBITORS See full prescribing information for complete boxed warning. Serious and/or life-threatening peripheral ischemia has been associated with the coadministration of dihydroergotamine with strong CYP3A4 inhibitors including protease inhibitors and macrolide antibiotics. Because CYP3A4 inhibition elevates the serum levels of dihydroergotamine, the risk for vasospasm leading to cerebral ischemia and/or ischemia of the extremities is increased. Hence, concomitant use of BREKIYA with strong CYP3A4 inhibitors is contraindicated [see Contraindications (4) and Warnings and Precautions (5.1) ].

5 WARNINGS AND PRECAUTIONS Myocardial Ischemia and/or Infarction, Other Cardiac Adverse Reactions, and Fatalities: In patients with risk factors predictive of coronary artery disease, consider first dose administration under medical supervision with an electrocardiogram. ( 5.2 ) Cerebrovascular Adverse Reactions and Fatalities: Cerebrovascular hemorrhage, subarachnoid hemorrhage, and stroke have been reported; discontinue BREKIYA if suspected. ( 5.3 ) Other Vasospasm Related Adverse Reactions: BREKIYA may cause vasospasm or elevation in blood pressure. Discontinue if signs or symptoms of vasoconstriction develop. ( 5.4 , 5.5 ) Medication Overuse Headache: Detoxification may be necessary. ( 5.6 ) Preterm Labor: Advise pregnant women of the risk. ( 5.7 , 8.1 ) Fibrotic Complications: Pleural and retroperitoneal fibrosis have been reported following prolonged daily use of dihydroergotamine mesylate. Do not exceed the BREKIYA dosing guidelines or use for chronic daily administration. ( 5.8 ) 5.1 Peripheral Ischemia Following Coadministration with Strong CYP3A4 Inhibitors Serious and/or life-threatening peripheral ischemia has been associated with the coadministration of dihydroergotamine and strong CYP3A4 inhibitors. Because CYP3A4 inhibition elevates the serum levels of dihydroergotamine, the risk for vasospasm leading to cerebral ischemia and/or and ischemia of the extremities is increased. Hence, concomitant use of BREKIYA with strong CYP3A4 inhibitors is contraindicated [see Contraindications (4) and Drug Interactions (7.1) ]. 5.2 Myocardial Ischemia and/or Infarction, Other Cardiac Adverse Reactions, and Fatalities The potential for cardiac adverse reactions exists with BREKIYA treatment. Serious adverse cardiac events, including some that have been fatal, have occurred following use of dihydroergotamine mesylate. These events have included acute myocardial infarction, life-threatening disturbances of cardiac rhythm (e.g., ventricular tachycardia and ventricular fibrillation), coronary artery vasospasm, and transient myocardial ischemia. Prior to initiation of BREKIYA, a cardiovascular evaluation is recommended to determine if the patient is free of coronary artery and ischemic myocardial disease or other significant underlying cardiovascular disease. If, during the cardiovascular evaluation, the patient’s medical history (including risk factors), or electrocardiographic investigation findings are consistent with coronary artery vasospasm or myocardial ischemia, BREKIYA should not be administered [see Contraindications (4) ]. For patients with risk factors predictive of coronary artery disease (e.g., hypertension, hypercholesterolemia, smoker, obesity, diabetes, strong family history of coronary artery disease, females who are surgically or physiologically postmenopausal, or males who are over 40 years of age) who are determined to have a satisfactory cardiovascular evaluation, it is strongly recommended that administration of the first dose of BREKIYA take place in the setting of an equipped healthcare facility, unless the patient has previously received dihydroergotamine. During the interval immediately following the first use of BREKIYA, an electrocardiogram is recommended in those patients with risk factors because ischemia can occur in the absence of clinical symptoms. 5.3 Cerebrovascular Adverse Reactions and Fatalities The potential for adverse cerebrovascular events exists with BREKIYA treatment. Cerebral hemorrhage, subarachnoid hemorrhage, stroke, and other cerebrovascular events have been reported in patients treated with dihydroergotamine mesylate; and some have resulted in fatalities. In a number of cases, it appears possible that the cerebrovascular events were primary, the dihydroergotamine mesylate having been administered in the incorrect belief that the symptoms experienced were a consequence of migraine, when they were not. It should be noted that patients with migraine may be at increased risk of certain cerebrovascular events (e.g., stroke, hemorrhage, transient ischemic attack). Discontinue BREKIYA if a cerebrovascular event is suspected. 5.4 Other Vasospasm Related Adverse Reactions BREKIYA, like other ergot alkaloids, may cause vasospastic reactions other than coronary artery vasospasm. Myocardial, peripheral vascular, and colonic ischemia have been reported with dihydroergotamine mesylate. Dihydroergotamine associated vasospastic phenomena may also cause muscle pains, numbness, coldness, pallor, and cyanosis of the digits. In patients with compromised circulation, persistent vasospasm may result in gangrene or death. BREKIYA should be discontinued immediately if signs or symptoms of vasoconstriction develop. Patients who experience other symptoms or signs suggestive of decreased arterial flow, such as ischemic bowel syndrome or Raynaud’s syndrome following the use of any 5-HT agonist, including BREKIYA, should be evaluated by a healthcare provider. 5.5 Increase in Blood Pressure Significant elevation in blood pressure has been reported on rare occasions in patients with and without a history of hypertension treated with dihydroergotamine mesylate. BREKIYA is contraindicated in patients with uncontrolled hypertension [see Contraindications (4) ]. An 18% increase in mean pulmonary artery pressure was seen following dosing with another 5-HT 1 agonist in a study evaluating subjects undergoing cardiac catheterization. 5.6 Medication Overuse Headache Overuse of acute migraine drugs (e.g., ergotamines, triptans, opioids, or a combination of these drugs for 10 or more days per month) may lead to exacerbation of headache (i.e., medication overuse headache). Medication overuse headache may present as migraine-like daily headaches or as a marked increase in frequency of migraine attacks. Detoxification of patients including withdrawal of the overused drugs and treatment of withdrawal symptoms (which often includes a transient worsening of headache) may be necessary. 5.7 Preterm Labor Based on the mechanism of action of dihydroergotamine and findings from the published literature, BREKIYA may cause preterm labor. Avoid use of BREKIYA during pregnancy [see Use in Specific Populations (8.1) and Clinical Pharmacology (12.2) ]. 5.8 Fibrotic Complications The potential for fibrotic complications exists with BREKIYA treatment. There have been reports of pleural and retroperitoneal fibrosis in patients following prolonged daily use of dihydroergotamine mesylate. Rarely, prolonged daily use of other ergot alkaloid drugs has been associated with cardiac valvular fibrosis. Rare cases have also been reported in association with the use of dihydroergotamine mesylate; however, in those cases, patients also received drugs known to be associated with cardiac valvular fibrosis. Administration of BREKIYA should not exceed the dosing guidelines and should not be used for chronic daily administration [see Dosage and Administration (2.1) ]. 5.9 Hypersensitivity The rigid needle shield of the BREKIYA autoinjector contains a needle cover (located inside the cap) that contains dry natural rubber, which is made from latex. BREKIYA is contraindicated in patients who have previously shown hypersensitivity to ergot alkaloids or latex.

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Peripheral Ischemia Following Coadministration with Strong CYP3A4 Inhibitors [see Boxed Warning and Warnings and Precautions (5.1) ] Myocardial Ischemia and/or Infarction, Other Cardiac Adverse Reactions, and Fatalities [see Warnings and Precautions (5.2) ] Cerebrovascular Adverse Reactions and Fatalities [see Warnings and Precautions (5.3) ] Other Vasospasm Related Adverse Reactions [see Warnings and Precautions (5.4) ] Increase in Blood Pressure [see Warnings and Precautions (5.5) ] Medication Overuse Headache [see Warnings and Precautions (5.6) ] Preterm Labor [see Warnings and Precautions (5.7) ] Fibrotic Complications [see Warnings and Precautions (5.8) ] Hypersensitivity [see Warnings and Precautions (5.9) ] The following adverse reactions associated with the use of dihydroergotamine were identified in clinical studies or postmarketing reports. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to the drug exposure. Serious cardiac events, including some that have been fatal, have occurred following use of dihydroergotamine. Events reported have included coronary artery vasospasm, transient myocardial ischemia, myocardial infarction, ventricular tachycardia, and ventricular fibrillation [see Contraindications (4) and Warnings and Precautions (5.2) ]. Fibrotic complications have been reported in association with long term use of injectable dihydroergotamine mesylate [see Warnings and Precautions (5.8) ]. Vasospasm, paresthesia, hypertension, dizziness, anxiety, dyspnea, headache, flushing, diarrhea, rash, increased sweating, and pleural and retroperitoneal fibrosis occurred after long-term use of dihydroergotamine. Cases of myocardial infarction and stroke have been reported following the use of dihydroergotamine [see Warnings and Precautions (5.2 , 5.3 )]. Serious cardiac events (including fatal) that have been reported with dihydroergotamine mesylate injection use include coronary artery vasospasm, transient myocardial ischemia, myocardial infarction, ventricular tachycardia, ventricular fibrillation. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Amneal Pharmaceuticals LLC at 1-877-835-5472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch