Acrihellin is a type of cardiac-active steroid. Acrihellin can increase the contractility of the left atrium in guinea pigs[1].
References
[1] Herzig S, et al. Acrihellin, a cardioactive steroid escaping from the organ-bath. Naunyn Schmiedebergs Arch Pharmacol. 1987 Mar;335(3):326-30. DOI:10.1007/BF00172805
