Recommended Topic Related To:


"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.

Headaches migh"...



Alsuma Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Alsuma (sumatriptan) Auto-Injector is a triptan used to treat migraine headaches and cluster headaches. Alsuma will only treat a headache that has already begun. It will not prevent headaches or reduce the number of attacks. It should not be used to treat a common tension headache, a headache that causes loss of movement on one side of your body, or any headache that seems to be different from your usual migraine headaches. Common side effects include flushing, sensations of tingling/numbness/prickling/heat, weakness, drowsiness, dizziness, or pain, swelling, bleeding, or bruising at the injection site.

The maximum single recommended adult dose of Alsuma is 6 mg injected subcutaneously. Alsuma may interact with antidepressants. Tell your doctor all medications and supplements you use. During pregnancy, Alsuma should be used only if prescribed. This drug passes into breast milk and may have undesirable effects on a nursing infant. Avoid breastfeeding for at least 12 hours after using Alsuma. Consult your doctor before breastfeeding.

Our Alsuma (sumatriptan) Auto-Injector Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Alsuma in Detail - Patient Information: Side Effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using sumatriptan and call your doctor if you have a serious side effect such as:

  • feeling of pain or tightness in your jaw, neck, or throat;
  • chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
  • sudden numbness or weakness, especially on one side of the body;
  • sudden severe headache, confusion, problems with vision, speech, or balance;
  • sudden and severe stomach pain and bloody diarrhea;
  • seizure (convulsions);
  • numbness or tingling and a pale or blue-colored appearance in your fingers or toes; or
  • (if you are also taking an antidepressant) -- agitation, hallucinations, fever, fast heart rate, overactive reflexes, nausea, vomiting, diarrhea, loss of coordination, fainting.

Less serious side effects may include:

  • mild headache (not a migraine);
  • pressure or heavy feeling in any part of your body;
  • discomfort in your nose or throat;
  • dizziness, spinning sensation;
  • muscle pain, neck pain or stiffness;
  • warmth, redness, or mild tingling under your skin; or
  • pain, redness, bleeding, swelling, or bruising where you injected the medicine.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Alsuma (Sumatriptan Injection) »

What is Patient Information Overview?

A concise overview of the drug for the patient or caregiver from First DataBank.

Alsuma Overview - Patient Information: Side Effects

SIDE EFFECTS: Pain, swelling, bleeding, or bruising at the injection site may occur. Flushing, sensations of tingling/numbness/prickling/heat, weakness, drowsiness, or dizziness may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Chest/jaw/neck tightness can commonly occur shortly after using sumatriptan. Only rarely are these signs of a serious condition. However, you may not be able to tell it apart from a serious reaction related to a lack of blood flow to the heart, brain or other parts of the body. Seek immediate medical attention if any of these unlikely but very serious (rarely fatal) side effects occur: chest pain, jaw/left arm pain, fainting, fast/irregular/pounding heartbeat, vision changes, weakness on one side of the body, confusion, slurred speech, sudden or severe stomach/abdominal pain, bloody diarrhea.

Tell your doctor immediately if any of these unlikely but serious side effects occur: blue fingers/toes/nails, cold sensation of hands/feet, hearing changes, mental/mood changes, seizures.

This medication may rarely cause a very serious condition called serotonin syndrome. The risk increases when this medication is taken with certain other drugs such as other "triptans" used to treat migraine headaches (e.g., rizatriptan, zolmitriptan), certain antidepressants including SSRIs (e.g., citalopram, fluoxetine, paroxetine) and NSRIs (e.g., duloxetine, venlafaxine), or a certain drug to treat obesity (sibutramine). Before taking this drug, tell your doctor if you take any of these medications. Serotonin syndrome may be more likely when you start or increase the dose of any of these medications. Seek immediate medical attention if you develop some of the following symptoms: hallucinations, unusual restlessness, loss of coordination, fast heartbeat, severe dizziness, high fever, severe nausea/vomiting/diarrhea, twitchy muscles.

A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the entire patient information overview for Alsuma (Sumatriptan Injection)»

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Alsuma FDA Prescribing Information: Side Effects
(Adverse Reactions)


This section provides a summary of adverse reactions reported in subjects in clinical studies conducted with ALSUMA and sumatriptan injection. Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to the rates in the clinical trials of another drug, and may not reflect the rates observed in practice.

Serious cardiac reactions, including myocardial infarction, have occurred following the use of sumatriptan. These reactions are extremely rare and most have been reported in patients with risk factors predictive of CAD. Reactions reported have included coronary artery vasospasm, transient myocardial ischemia, myocardial infarction, ventricular tachycardia, and ventricular fibrillation. [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS]

Significant hypertensive episodes, including hypertensive crises, have been reported on rare occasions in patients with or without a history of hypertension. [see WARNINGS AND PRECAUTIONS]

The following other adverse reactions are discussed in more detail in other sections of labeling:

Sensations of Chest Pain and Tightness [see WARNINGS AND PRECAUTIONS]

Cerebrovascular Events and Fatalities [see WARNINGS AND PRECAUTIONS]

Other Vasospam related Events including Peripheral Vascular Ischemia and Colonic Ischemia [see WARNINGS AND PRECAUTIONS]

Serotonin Syndrome [see WARNINGS AND PRECAUTIONS]

Among patients in clinical trials of subcutaneous sumatriptan succinate injection (n=6,218), up to 3.5% of patients withdrew for reasons related to adverse reactions.

Controlled Clinical Trials in Patients with Migraine Headache

Table 1 lists adverse reactions that occurred in 2 large placebo-controlled clinical trials in migraine patients following either a single 6 mg sumatriptan injection or placebo. Only adverse reactions that occurred at a frequency of 2% or more in groups treated with sumatriptan injection 6 mg and occurred at a frequency greater than in the placebo group are included in Table 1.

Table 1: Treatment-Emergent Adverse Reactions Incidence in 2 Large, Placebo-Controlled Clinical Trials in Patients with Migraine: Events Reported by at Least 2% of Patients Treated with Sumatriptan Injection 6 mg*

Adverse Reactions Percent of Patients Reporting
Sumatriptan 6 mg SC
(n = 547)
(n = 370)
Atypical sensations 42 9
  Tingling 14 3
  Warm/hot sensation 11 4
  Burning sensation 7 < 1
  Feeling of heaviness 7 1
  Pressure sensation 7 2
  Feeling of tightness 5 < 1
  Numbness 5 2
  Feeling strange 2 < 1
  Tight feeling in head 2 < 1
  Flushing 7 2
  Chest Discomfort 5 1
  Tightness in chest 3 < 1
  Discomfort: nasal cavity/sinuses 2 < 1
  Injection site reaction 59 24
  Jaw discomfort 2 0
  Weakness 5 < 1
  Neck pain/stiffness 5 < 1
  Myalgia 2 < 1
  Dizziness/vertigo 12 4
  Drowsiness/sedation 3 2
  Headache 2 < 1
* The sum of the percentages cited is greater than 100% because patients could have experienced more than 1 type of adverse event. Only events that occurred at a frequency of 2% or more in groups treated with sumatriptan injection and that occurred at a frequency greater than that in the placebo group are included.

The incidence of adverse reactions in controlled clinical trials was not affected by gender or age of the patients. There were insufficient data to assess the impact of race on the incidence of adverse events.

Controlled Clinical Trials in Patients with Cluster Headache

In the controlled clinical trials assessing sumatriptan injection as a treatment for cluster headache, no new significant adverse reactions associated with the use of sumatriptan were detected that had not already been identified in association with the drug's use in migraine.

Overall, the frequency of adverse events reported in studies of cluster headache was generally lower. Exceptions include reports of paresthesia (5% sumatriptan, 0% placebo), nausea and vomiting (4% sumatriptan, 0% placebo), and bronchospasm (1% sumatriptan, 0% placebo).

Other Adverse Reactions Observed in Association with the Administration of Sumatriptan Injection

The frequencies of less commonly reported adverse clinical reactions are presented. Because the reports include events observed in open and uncontrolled studies, the role of sumatriptan injection in their causation cannot be reliably determined. Furthermore, variability associated with adverse reactions reporting, the terminology used to describe adverse reactions limits the value of the quantitative frequency estimates provided.

Adverse reactions frequencies are calculated as the number of patients reporting an event divided by the total number of patients (N = 6,218) exposed to subcutaneous sumatriptan. All reported adverse reactions are included except those already listed in the previous table, those too general to be informative, and those not reasonably associated with the use of the drug. Adverse reactions are further classified within body system categories and enumerated in order of decreasing frequency using the following definitions: frequent adverse reactions are defined as those occurring in at least 1/100 patients, infrequent adverse reactions are those occurring in 1/100 to 1/1,000 patients, and rare adverse reactions are those occurring in fewer than 1/1,000 patients.

Cardiovascular: Infrequent were hypertension, hypotension, bradycardia, tachycardia, palpitations, pulsating sensations, various transient ECG changes (nonspecific ST or T-wave changes, prolongation of PR or QTc intervals, sinus arrhythmia, nonsustained ventricular premature beats, isolated junctional ectopic beats, atrial ectopic beats, delayed activation of the right ventricle), and syncope. Rare were pallor, arrhythmia, abnormal pulse, vasodilation, and Raynaud syndrome.

Endocrine and Metabolic: Infrequent was thirst. Rare were polydipsia and dehydration.

Eye: Frequent were vision alterations. Infrequent was irritation of the eye.

Gastrointestinal: Frequent were abdominal discomfort and dysphagia. Infrequent were gastroesophageal reflux and diarrhea. Rare were peptic ulcer, retching, flatulence/eructation, and gallstones.

Musculoskeletal: Frequent were muscle cramps. Infrequent were various joint disturbances (pain, stiffness, swelling, ache). Rare were muscle stiffness, need to flex calf muscles, backache, muscle tiredness, and swelling of the extremities.

Neurological: Frequent was anxiety. Infrequent were mental confusion, euphoria, agitation, relaxation, chills, sensation of lightness, tremor, shivering, disturbances of taste, prickling sensations, paresthesia, stinging sensations, facial pain, photophobia, and lacrimation. Rare were transient hemiplegia, hysteria, globus hystericus, intoxication, depression, myoclonia, monoplegia/diplegia, sleep disturbance, difficulties in concentration, disturbances of smell, hyperesthesia, dysesthesia, simultaneous hot and cold sensations, tickling sensations, dysarthria, yawning, reduced appetite, hunger, and dystonia.

Respiratory: Infrequent was dyspnea. Rare were influenza, diseases of the lower respiratory tract, and hiccoughs.

Skin: Infrequent were erythema, pruritus, and skin rashes and eruptions. Rare was skin tenderness.

Urogenital: Rare were dysuria, frequency, dysmenorrhea, and renal calculus.

Miscellaneous: Infrequent were miscellaneous laboratory abnormalities, including minor disturbances in liver function tests, “serotonin agonist effect,” and hypersensitivity to various agents. Rare was fever.

Other Adverse Reactions Observed in the Clinical Development of Sumatriptan

The following adverse reactions occurred in clinical trials with sumatriptan tablets and sumatriptan nasal spray. Because the reports include events observed in open and uncontrolled studies, the role of sumatriptan in their causation cannot be reliably determined. All reported events are included except those already listed, those too general to be informative, and those not reasonably associated with the use of the drug.

Breasts: Breast swelling, cysts, disorder of breasts, lumps, masses of breasts, nipple discharge, primary malignant breast neoplasm, and tenderness.

Cardiovascular: Abdominal aortic aneurysm, angina, atherosclerosis, cerebral ischemia, cerebrovascular lesion, heart block, peripheral cyanosis, phlebitis, thrombosis, and transient myocardial ischemia.

Ear, Nose, and Throat: Allergic rhinitis; disorder of nasal cavity/sinuses; ear, nose, and throat hemorrhage; ear infection; external otitis; feeling of fullness in the ear(s); hearing disturbances; hearing loss; Meniere disease; nasal inflammation; otalgia; sensitivity to noise; sinusitis; tinnitus; and upper respiratory inflammation.

Endocrine and Metabolic: Elevated thyrotropin stimulating hormone (TSH) levels; endocrine cysts, lumps, and masses; fluid disturbances; galactorrhea; hyperglycemia; hypoglycemia; hypothyroidism; weight gain; and weight loss.

Eye: Accommodation disorders, blindness and low vision, conjunctivitis, disorders of sclera, external ocular muscle disorders, eye edema and swelling, eye hemorrhage, eye itching, eye pain, keratitis, mydriasis, and visual disturbances.

Gastrointestinal: Abdominal distention, colitis, constipation, dental pain, dyspeptic symptoms, feelings of gastrointestinal pressure, gastric symptoms, gastritis, gastroenteritis, gastrointestinal bleeding, gastrointestinal pain, hematemesis, hypersalivation, hyposalivation, intestinal obstruction, melena, nausea and/or vomiting, oral itching and irritation, pancreatitis, salivary gland swelling, and swallowing disorders.

Hematological Disorders: Anemia.

Mouth and Teeth: Disorder of mouth and tongue (e.g., burning of tongue, numbness of tongue, dry mouth).

Musculoskeletal: Acquired musculoskeletal deformity, arthralgia and articular rheumatitis, arthritis, intervertebral disc disorder, muscle atrophy, muscle tightness and rigidity, musculoskeletal inflammation, and tetany.

Neurological: Apathy, aggressiveness, bad/unusual taste, bradylogia, cluster headache, convulsions, depressive disorders, detachment, disturbance of emotions, drug abuse, facial paralysis, hallucinations, heat sensitivity, incoordination, increased alertness, memory disturbance, migraine, motor dysfunction, neoplasm of pituitary, neuralgia, neurotic disorders, paralysis, personality change, phobia, phonophobia, psychomotor disorders, radiculopathy, raised intracranial pressure, rigidity, stress, syncope, suicide, and twitching.

Respiratory: Asthma, breathing disorders, bronchitis, cough, and lower respiratory tract infection.

Skin: Dry/scaly skin, eczema, herpes, seborrheic dermatitis, skin nodules, tightness of skin, and wrinkling of skin.

Urogenital: Abnormal menstrual cycle, abortion, bladder inflammation, endometriosis, hematuria, increased urination, inflammation of fallopian tubes, intermenstrual bleeding, menstruation symptoms, micturition disorders, urethritis, and urinary infections.

Miscellaneous: Contusions, difficulty in walking, edema, hematoma, hypersensitivity, fever, fluid retention, lymphadenopathy, overdose, speech disturbance, swelling of extremities, swelling of face, and voice disturbances.

Pain and Other Pressure Sensations: Chest pain and/or heaviness, neck/throat/jaw pain/tightness/pressure, and pain (location specified).

Postmarketing Experience (Reports for Subcutaneous or Oral Sumatriptan)

The following adverse reactions have been identified during postapproval use of Sumatriptan. 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 drug exposure. However, systemic reactions following sumatriptan use are likely to be similar regardless of route of administration.

Blood: Hemolytic anemia, pancytopenia, thrombocytopenia.

Cardiovascular: Atrial fibrillation, cardiomyopathy, colonic ischemia [see WARNINGS AND PRECAUTIONS], Prinzmetal variant angina, pulmonary embolism, shock, thrombophlebitis.

Ear, Nose, and Throat: Deafness.

Eye: Ischemic optic neuropathy, retinal artery occlusion, retinal vein thrombosis, loss of vision.

Gastrointestinal: Ischemic colitis with rectal bleeding [see WARNINGS AND PRECAUTIONS], xerostomia.

Hepatic: Elevated liver function tests.

Neurological: Central nervous system vasculitis, cerebrovascular accident, dysphasia, serotonin syndrome, subarachnoid hemorrhage.

Non-Site Specific: Angioneurotic edema, cyanosis, death [see WARNINGS AND PRECAUTIONS], temporal arteritis.

Psychiatry: Panic disorder.

Respiratory: Bronchospasm in patients with and without a history of asthma.

Skin: Exacerbation of sunburn, hypersensitivity reactions (allergic vasculitis, erythema, pruritus, rash, shortness of breath, urticaria; in addition, severe anaphylaxis/anaphylactoid reactions have been reported [see WARNINGS AND PRECAUTIONS], photosensitivity. Following subcutaneous administration of sumatriptan, pain, redness, stinging, induration, swelling, contusion, subcutaneous bleeding, and, on rare occasions, lipoatrophy (depression in the skin) or lipohypertrophy (enlargement or thickening of tissue) has been reported.

Urogenital: Acute renal failure.

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 entire FDA prescribing information for Alsuma (Sumatriptan Injection) »


Alsuma - User Reviews

Alsuma User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Alsuma sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Living Better

Find the secrets to longer life.

Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations