What side effects can this medication cause?

What side effects can this medication cause?

Tramadol may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

• dizziness
  
• weakness
  
• sleepiness
  
• difficulty falling asleep or staying asleep
  
• headache
  
• nervousness
  
• agitation
  
• uncontrollable shaking of a part of the body
  
• muscle tightness
  
• changes in mood
  
• drowsiness
  
• heartburn or indigestion
  
• nausea
  
• vomiting
  
• diarrhea
  
• constipation
  
• itching
  
• sweating
  
• chills
  
• dry mouth
  

Some side effects can be serious. If you experience any of these symptoms or those listed in the SPECIAL PRECAUTIONS section , call your doctor immediately:

• seizures
  
• sores on the inside of your mouth, nose, eyes, or throat
  
• flu-like symptoms
  
• hives
  
• rash
  
• difficulty swallowing or breathing
  
• swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
  
• hoarseness
  
• hallucinations (seeing things or hearing voices that do not exist)
  

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Tramadol may cause other side effects. Tell your doctor if you have any unusual problems while you are taking this medication.