"Most of us get headaches from time to time. Some are mild. Others cause throbbing pain. They can last for minutes or days. There are many different types of headaches. How you treat yours depends on which kind you have.
The following adverse reactions are discussed in more detail in other sections of the prescribing information:
- Myocardial ischemia, myocardial infarction, and Prinzmetal's angina [see WARNINGS AND PRECAUTIONS]
- Arrhythmias [see WARNINGS AND PRECAUTIONS]
- Chest, throat, neck, and/or jaw pain/tightness/pressure [see WARNINGS AND PRECAUTIONS]
- Cerebrovascular events [see WARNINGS AND PRECAUTIONS]
- Other vasospasm reactions [see WARNINGS AND PRECAUTIONS]
- Medication overuse headache [see WARNINGS AND PRECAUTIONS]
- Serotonin syndrome [see WARNINGS AND PRECAUTIONS]
- Increase in blood pressure [see WARNINGS AND PRECAUTIONS]
- Hypersensitivity reactions [see WARNINGS AND PRECAUTIONS]
- Seizures [see WARNINGS AND PRECAUTIONS]
Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice.
Table 1 lists adverse reactions that occurred in 2 US placebo-controlled clinical trials in migraine subjects [Studies 2 and 3, see Clinical Studies] following either a single 6-mg dose of sumatriptan injection or placebo. Only reactions that occurred at a frequency of 2% or more in groups treated with sumatriptan injection 6 mg and that occurred at a frequency greater than the placebo group are included in Table 1.
Table 1: Adverse Reactions Reported by at Least 2% of
Subjects and at a Greater Frequency Than Placebo in 2 Placebo-Controlled
Migraine Clinical Trials (Studies 2 and 3)a
|Adverse Reaction||Percent of Subjects Reporting|
|Sumatriptan 6 mg Subcutaneous
(n = 547)
(n = 370)
|Burning sensation||7||< 1|
|Feeling of heaviness||7||1|
|Feeling of tightness||5||< 1|
|Feeling strange||2||< 1|
|Tight feeling in head||2||< 1|
|Tightness in chest||3||< 1|
|Pressure in chest||2||< 1|
|Ear, nose and throat|
|Throat discomfort||3||< 1|
|Discomfort: nasal cavity/sinuses||2||< 1|
|Injection site reactionb||59||24|
|Miscellaneous Jaw discomfort||2||0|
|Neck pain/stiffness||5||< 1|
|a The sum of the percentages cited is greater
than 100% because subjects may have experienced more than 1 type of adverse
reaction. Only reactions that occurred at a frequency of 2% or more in groups
treated with sumatriptan injection and occurred at a frequency greater than the
placebo groups are included.
b Includes injection site pain, stinging/burning, swelling, erythema, bruising, bleeding.
The incidence of adverse reactions in controlled clinical trials was not affected by gender or age of the subjects. There were insufficient data to assess the impact of race on the incidence of adverse reactions.
In the controlled clinical trials assessing the efficacy of sumatriptan injection as a treatment for cluster headache [Studies 4 and 5, see Clinical Studies], no new significant adverse reactions were detected that had not already been identified in trials of sumatriptan in subjects with migraine.
Overall, the frequency of adverse reactions reported in the trials of cluster headache was generally lower than in the migraine trials. Exceptions include reports of paresthesia (5% sumatriptan, 0% placebo), nausea and vomiting (4% sumatriptan, 0% placebo), and bronchospasm (1% sumatriptan, 0% placebo).
Adverse Reactions Observed In Association With The Administration of ALSUMA
The safety of ALSUMA was evaluated in an open-label clinical trial evaluating the usability of ALSUMA during a migraine attack. Adverse reactions that occurred at a frequency of 5% or higher were injection site bruising (16%), injection site pain (6%), and injection site hemorrhage (6%).
Read the Alsuma (sumatriptan injection) Side Effects Center for a complete guide to possible side effects
Ergot-containing drugs have been reported to cause prolonged vasospastic reactions. Because these effects may be additive, use of ergotamine-containing or ergot-type medications (like dihydroergotamine or methysergide) and ALSUMA within 24 hours of each other is contraindicated.
Monoamine Oxidase-A Inhibitors
MAO-A inhibitors increase systemic exposure by 2-fold. Therefore, the use of ALSUMA in patients receiving MAO-A inhibitors is contraindicated [see CLINICAL PHARMACOLOGY].
Other 5-HT1 Agonists
Because their vasospastic effects may be additive, co-administration of ALSUMA and other 5-HT1 agonists (e.g., triptans) within 24 hours of each other is contraindicated.
Selective Serotonin Reuptake Inhibitors/Serotonin Norepinephrine Reuptake Inhibitors And Serotonin Syndrome
Cases of serotonin syndrome have been reported during co-administration of triptans and SSRIs, or SNRIs, SNRIs, TCAs, and MAO inhibitors [see WARNINGS AND PRECAUTIONS].
Read the Alsuma Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 11/22/2016
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