About formoterol fumarate dihydrate
Long-acting beta-2 agonist bronchodilator
Used for
- Maintenance treatment of asthma, alongside an inhaled corticosteroid
- Maintenance treatment of chronic obstructive pulmonary disease (COPD)
Usual adult dose
Usually one inhaled dose twice daily; asthma treatment must include an inhaled corticosteroid.
Usual dose in children
For asthma from age 5 years: usually one inhaled dose twice daily, with an inhaled corticosteroid; age approvals vary by country.
Common side effects
- Tremor or headache
- Palpitations or fast heartbeat
- Muscle cramps
- Cough or throat irritation
Important warnings
- Not for sudden breathing attacks; use a reliever inhaler.
- For asthma, never use without an inhaled corticosteroid.
- Do not swallow the capsule; use it only with its inhaler.
- Seek urgent care for worsening breathing or allergic reaction.
Pregnancy
Use only when clinically needed; discuss benefits and risks with a healthcare professional.
Breastfeeding
Limited information; discuss use with a healthcare professional.
Interactions
- Other stimulant or sympathomimetic medicines may increase heart effects.
- Beta-blockers can reduce its effect or cause bronchospasm.
- Some diuretics, steroids, or theophylline may increase low-potassium risk.
- Certain medicines that prolong QT interval may raise heart-rhythm risks.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.