Late outcome of a randomized study on oral magnesium for premature complexes.

Background: Ventricular and supraventricular premature complexes (PC) are frequent and usually symptomatic. According to a previous study, magnesium pidolate (MgP) administration to symptomatic patients can improve the PC density and symptoms.

Objective: To assess the late follow-up of that clinical intervention in patients treated with MgP or placebo.