Choline theophyllinate
Choline theophyllinate, also known as oxtriphylline, is a cough medicine derived from xanthine that acts as a bronchodilator to open up airways in the lung. Chemically, it is a salt of choline and theophylline. It classifies as an expectorant. The drug is available under the brand names Choledyl and Choledyl SA, among others.
