PT - JOURNAL ARTICLE ED - , TI - Oxprenolol and practolol: new beta blockers AID - 10.1136/dtb.9.1.1 DP - 1971 Jan 01 TA - Drug and Therapeutics Bulletin PG - 1--3 VI - 9 IP - 1 4099 - http://dtb.bmj.com/content/9/1/1.short 4100 - http://dtb.bmj.com/content/9/1/1.full SO - Drug Ther Bull1971 Jan 01; 9 AB - Since the introduction of propranolol (Inderal -ICI) two more β -adrenergic receptor blocking agents have become available for clinical use, practolol (Eraldin - ICI) and oxprenolol (Trasicor - Ciba). Both manufacturers claim that their product is less likely than propranolol to precipitate heart failure or asthma. All three drugs, although structurally similar, have different pharmacological properties which are summarised in the table. The use of the drugs in different clinical situations must therefore be considered separately.