I read your question and I understand your concern. Toprol is a beta-blocker, its generic name is Metoprolol. It is a selective beta-blocker and there is less risk for effect on the bronchi compared to nonselective ones like propranolol, but still caution is needed if you suffer from asthma or other bronchospastic conditions. Lisinopril is safe to use in regard to pulmonary conditions. In some patients it could cause some dry cough, in that case an antihypertensive of the ARB class (irbesartan, valsartan etc) which have similar indications but don t cause cough can be used. I hope to have been of help.