Do you mind expanding slightly on this cardiac side effect of minoxidil?

Some of the symptoms include: chest pain; irregular or very fast heartbeats; dizziness or lightheadedness; or fainting. Minoxidil is a hypotensive agent original designed to treat high blood pressure. Minoxidil is a direct-acting arterial vasodilator. The most dangerous of the complications is pericardial effusion reported with minoxidil treatment both in patients undergoing dialysis and those with normal renal function. Pericardial effusion can be large and result in cardiac tamponade in some cases and if untreated can rarely cause death.