Eletriptan Hydrobromide

ELETRIPTAN HYDROBROMIDE- eletriptan hydrobromide tablet, film coated
Zydus Pharmaceuticals (USA) Inc.

1 INDICATIONS AND USAGE

Eletriptan hydrobromide tablets are indicated for the acute treatment of migraine with or without aura in adults.

Limitations of Use:

  • Use only if a clear diagnosis of migraine has been established. If a patient has no response to the first migraine attack treated with eletriptan hydrobromide, reconsider the diagnosis of migraine before eletriptan hydrobromideis administered to treat any subsequent attacks.
  • Eletriptan hydrobromidetablets arenot intended for the prevention of migraine attacks.
  • Safety and effectiveness of eletriptan hydrobromidehave not been established for cluster headache.

2 DOSAGE AND ADMINISTRATION

The maximum recommended single dose is 40 mg.

In controlled clinical trials, single doses of 20 mg and 40 mg were effective for the acute treatment of migraine in adults. A greater proportion of patients had a response following a 40 mg dose than following a 20 mg dose [see Clinical Studies (14)].

If the migraine has not resolved by 2 hours after taking eletriptan hydrobromide , or returns after transient improvement, a second dose may be administered at least 2 hours after the first dose. The maximum daily dose should not exceed 80 mg.

The safety of treating an average of more than 3 migraine attacks in a 30 day period has not been established.

3 DOSAGE FORMS AND STRENGTHS

20 mg Tablets: orange to mottled orange colored, round shaped, biconvex with beveled edge, film-coated tablets, debossed with “922″ on one side and plain on the other side.

40 mg Tablets: brown colored, round shaped, biconvex with beveled edge, film-coated tablets, debossed with “923″ on one side and plain on the other side.

4 CONTRAINDICATIONS

Eletriptan hydrobromide is contraindicated in patients with:

  • Ischemic coronary artery disease (CAD) (angina pectoris, history of myocardial infarction, or documented silent ischemia) or coronary artery vasospasm, including Prinzmetal’s angina [see Warnings and Precautions (5.1)].
  • Wolff-Parkinson-White syndrome or arrhythmias associated with other cardiac accessory conduction pathway disorders [see Warnings and Precautions (5.2)].
  • History of stroke, transient ischemic attack (TIA), or history or current evidence of hemiplegic or basilar migraine because these patients are at a higher risk of stroke [see Warnings and Precautions (5.4)].
  • Peripheral vascular disease [see Warnings and Precautions (5.5)].
  • Ischemic bowel disease [see Warnings and Precautions (5.5)].
  • Uncontrolled hypertension [see Warnings and Precautions (5.8)].
  • Recent use (i.e., within 24 hours) of another 5-hydroxytryptamine1 (5-HT1 ) agonist, ergotamine-containing medication, or ergot-type medication such as dihydroergotamine (DHE) or methysergide [see Drug Interactions (7.1)].
  • Hypersensitivity to eletriptan hydrobromide (angioedema and anaphylaxis seen) [see Warnings and Precautions (5.9)].
  • Recent use (i.e., within at least 72 hours) of the following potent CYP3A4 inhibitors: ketoconazole, itraconazole, nefazodone, troleandomycin, clarithromycin, ritonavir, or nelfinavir [see Drug Interactions (7.2) and Clinical Pharmacology (12.3)].

5 WARNINGS AND PRECAUTIONS

Eletriptan hydrobromide tablets should only be used where a clear diagnosis of migraine has been established.

5.1 Myocardial Ischemia, Myocardial Infarction, and Prinzmetal’s Angina

Eletriptan hydrobromide tablets are contraindicated in patients with ischemic or vasospastic CAD. There have been rare reports of serious cardiac adverse reactions, including acute myocardial infarction, occurring within a few hours following administration of eletriptan hydrobromide. Some of these reactions occurred in patients without known CAD. Eletriptan hydrobromide may cause coronary artery vasospasm (Prinzmetal’s angina), even in patients without a history of CAD.

Perform a cardiovascular evaluation in triptan-naÏve patients who have multiple cardiovascular risk factors (e.g., increased age, diabetes, hypertension, smoking, obesity, strong family history of CAD) prior to receiving eletriptan hydrobromide. Do not use eletriptan hydrobromide if there is evidence of CAD or coronary artery vasospasm [see Contraindications (4)]. For patients with multiple cardiovascular risk factors who have a negative cardiovascular evaluation, consider administering the first eletriptan hydrobromide dose in a medically-supervised setting and performing an electrocardiogram (ECG) immediately following administration of eletriptan hydrobromide. For such patients, consider periodic cardiovascular evaluation in intermittent long- term users of eletriptan hydrobromide.

5.2 Arrhythmias

Life-threatening disturbances of cardiac rhythm including ventricular tachycardia and ventricular fibrillation leading to death have been reported within a few hours following the administration of 5-HT1 agonists. Discontinue eletriptan hydrobromide if these disturbances occur. Eletriptan hydrobromide tablets are contraindicated in patients with Wolff-Parkinson-White syndrome or arrhythmias associated with other cardiac accessory conduction pathway disorders [see Contraindications (4)].

5.3 Chest, Throat, Neck and/or Jaw Pain/Tightness/Pressure

Sensations of tightness, pain, and pressure in the chest, throat, neck, and jaw commonly occur after treatment with eletriptan hydrobromide and are usually non-cardiac in origin. However, perform a cardiac evaluation if these patients are at high cardiac risk. Eletriptan hydrobromide tablets are contraindicated in patients with CAD or Prinzmetal’s variant angina [see Contraindications (4)].

5.4 Cerebrovascular Events

Cerebral hemorrhage, subarachnoid hemorrhage, and stroke have occurred in patients treated with 5-HT1 agonists, and some have resulted in fatalities. In a number of cases, it appears possible that the cerebrovascular events were primary, the 5-HT1 agonist having been administered in the incorrect belief that the symptoms experienced were a consequence of migraine, when they were not.

Before treating headaches in patients not previously diagnosed as migraineurs, and in migraineurs who present with symptoms atypical of migraine, other potentially serious neurological conditions need to be excluded. Eletriptan hydrobromide tablets are contraindicated in patients with a history of stroke or TIA [see Contraindications (4)].

5.5 Other Vasospasm Reactions

Eletriptan hydrobromide tablets may cause non-coronary vasospastic reactions, such as peripheral vascular ischemia, gastrointestinal vascular ischemia and infarction (presenting with abdominal pain and bloody diarrhea), and Raynaud’s syndrome. In patients who experience symptoms or signs suggestive of a vasospastic reaction following the use of any 5-HT1 agonist, rule out a vasospastic reaction before receiving additional eletriptan hydrobromide doses [see Contraindications (4)].

5.6 Medication Overuse Headache

Overuse of acute migraine drugs (e.g. ergotamine, triptans, opioids, or combination of these drugs for 10 or more days per month) may lead to exacerbation of headache (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 acute migraine drugs and treatment of withdrawal symptoms (which often includes a transient worsening of headache) may be necessary.

5.7 Serotonin Syndrome

Serotonin syndrome may occur with eletriptan hydrobromide, particularly during coadministration with selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), and monoamine oxidase (MAO) inhibitors [see Drug Interactions (7.3)]. Serotonin syndrome symptoms may include mental status changes (e.g., agitation, hallucinations, coma), autonomic instability (e.g., tachycardia, labile blood pressure, hyperthermia), neuromuscular aberrations (e.g., hyperreflexia, incoordination), and/or gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea). The onset of symptoms usually occurs within minutes to hours of receiving a new or a greater dose of a serotonergic medication. Discontinue eletriptan hydrobromide if serotonin syndrome is suspected.

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