When to Seek Medical Care

Always contact the health-care provider who prescribed the medication for advice.

• If the symptoms are mild, such as itching and localized hives, the provider may switch you to a different type of medication, recommend that you stop the medication, or, if appropriate, prescribe antihistamines to relieve your symptoms.
  
  
• If you cannot reach this provider for advice quickly, play it safe and go to a hospital emergency department.
  
  
• If you are having any "systemic" symptoms such as fever or vomiting, you should stop taking the medication and be seen immediately by a medical professional.
  
  
• If you are having difficulty breathing, your throat is swelling, or you are feeling faint, you may be having an anaphylactic reaction. Go immediately to a hospital emergency department. Do not attempt to drive yourself. If no one is available to drive you right away, call 911 for an ambulance. While waiting for the ambulance, start self-treatment.