BUDI-F 400 is an inhalation medication combining Budesonide and Formoterol Fumarate, used for treating asthma and chronic obstructive pulmonary disease (COPD). Budesonide, a corticosteroid, reduces inflammation in the airways, thereby helping to prevent asthma attacks and manage COPD symptoms. Formoterol Fumarate, a long-acting beta2-adrenergic agonist (LABA), relaxes the muscles around the airways, facilitating easier breathing by opening the air passages in the lungs. Administered via an inhaler, BUDI-F 400 ensures direct delivery to the lungs for swift and effective symptom relief. The typical dosage for adults and children over 12 years old is two inhalations twice daily. Common side effects include throat irritation, hoarseness, headache, and oral thrush. Rinsing the mouth after each use can help mitigate some side effects.