Abstract

Theograd (Abbott), Numotac (Riker) and Ventolin Tablets (A & H) are oral bronchodilator preparations recently introduced for use in reversible airways obstruction occurring in bronchial asthma and bronchitis. Theograd is a preparation of theophylline, isoetharine (in Numotac) and salbutamol (Ventolin) are both sympathomimetic drugs which stimulate the adrenergic β receptors of bronchial smooth muscle more than those of the cardiovascular system.