Ipratropium bromide (atrovent) and atropine sulfate are achticholinergic drugs used for the treatment of asthma. Ipratropium is used for treating asthmatics in emergency situations with a nebulizer
Both are considered bronchodilators but Albuterol increases respiratory rate and Ipratropium decreases it so to have the patient in a comfortable state.
A doctor would never prescribe these drugs together except under extreme conditions which don't allow for other sedatives/pain management. As for recreational use, this combination of drugs has been...