Budenol-F 400 Inhaler is a combination of two medicines that relieves long-term symptoms of asthma and COPD by inhibiting inflammation and relaxing airway muscles. It should be used regularly, even if no symptoms appear, and not used to relieve sudden shortness of breath. Common side effects include headache, nausea, vomiting, stomach discomfort, and respiratory tract infection. Pregnant or breastfeeding women should consult their doctor before taking Budenol-F 400 Inhaler. It is important to inform your doctor about kidney or liver diseases, pregnancy, and breastfeeding to ensure a suitable dose.