Budenol-F 400 capsule is a combination of two medicines that relieves long-term symptoms of asthma and COPD by inhibiting inflammation and relaxing airway muscles. Common side effects include headache, nausea, vomiting, stomach discomfort, and respiratory tract infection. Pregnant or breastfeeding women should consult their doctor before taking the Budenol-F 400 capsule. It is important to inform your doctor about kidney or liver diseases, pregnancy, and breastfeeding to ensure a suitable dose.