What are the side effects of formoterol?

Formoterol can cause many side effects, some more serious than others. Call your doctor right away if you have any of these effects:
  • signs of allergy, such as hives, rash or swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles or lower legs
  • difficulty swallowing or breathing, hoarseness
  • chest pain, fast, pounding or irregular heartbeat
  • lightheadedness, fainting
Make an appointment to talk to your doctor if any of the following effects continues for a long period of time:
  • stuffy or runny nose
  • sore throat, dry mouth
  • nervousness, dizziness
  • back pain, muscle cramps, headaches
  • nausea, heartburn, stomach pain
  • uncontrollable shaking of a part of the body
  • extreme tiredness
  • difficulty falling asleep or staying asleep

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.