Hi, dear I have gone through your question. I can understand your concern. Budamate contain formeterol and used to treat brochospasm in asthma. Common side effects are vomiting, Nausea, Nervousness, Bloody diarrhea, Dry mouth, Headache, Heartburn, Muscle cramp, Muscle pain, Stomach pain, Uncoordinated body movements. Montair contain Montelukast and it is used to treat astma and allergy. Common side effects are abdominal pain and headache. Other side effects are increased bleeding behaviour and mood related changes, diarrhoea, dyspepsia, nausea, vomiting, dizziness, drowsiness, pins and needles/numbness. These drugs are usually safe in pregnancy but still consult your doctor once. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health