Pentaerythrityl tetranitrate (PETN): a better nitrate?

This Editorial refers to 'Efficacy of the long acting nitro vasodilator pentaerithrityltetranitrate in patients with chronic stable angina pectoris receiving antianginal background therapy with betablockers: a 12-weeks, randomized, double-blind, placebo controlled trial', by Mu ¨nzel et al.