Imitrex Side Effects (Cont.)

Imitrex Side Effects to Report

Some side effects with Imitrex, while occurring infrequently, are potentially serious and should be reported to your healthcare provider. These include but are not limited to:
 
  • Severe chest pain or tightness (see Imitrex and Heart Problems)
  • Shortness of breath
  • Sudden severe abdominal pain (or stomach pain)
  • Bloody diarrhea
  • Changes in vision, including loss of vision
  • Seizures
  • Dizziness, lightheadedness, or fainting
  • Signs of an allergic reaction, such as:
 
    • Unexplained skin rashes
    • Itching
    • Hives
    • Wheezing or shortness of breath
    • Unexplained swelling.
 
Taking Imitrex with certain antidepressants can increase your risk of a group of dangerous symptoms called serotonin syndrome. Contact your healthcare provider immediately if you have the following symptoms of serotonin syndrome:
 
  • Confusion
  • Seeing or hearing things that are not really there (hallucinations)
  • Fast heartbeat (tachycardia)
  • Fainting
  • Fever
  • Sweating
  • Muscle spasms
  • Difficulty walking
  • Diarrhea.
     

Rare Imitrex Side Effects

Rare Imitrex side effects occur in less than 1 percent of people taking the medicine. Because these side effects are so uncommon, it is difficult to tell whether they are because of Imitrex or something else.
 
Some of these rare side effects include but are not limited to:
 
  • Sensation of a rapidly or forcefully beating heart (palpitations)
  • Fainting
  • Decreased or increased blood pressure
  • High blood sugar (hyperglycemia)
  • Low blood sugar (hypoglycemia)
  • Constipation
  • Breast tenderness
  • Asthma.
     
(Imitrex Side Effects Continued: Page 3)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;