ACHE and cardiac arrhythmia: Recently, after the discovery and use of numerous important drugs from herbal sources [270], such as quinine (an antimalarial drug from the Cinchona bark), atropine (anticholinergic medicine from Belladona), digoxin (obtained from Digitalis to treat cardiac arrhythmia), colchicine (extracted from Colchicum for treating gout), and galantamine (AChE inhibitor from Galanthus spp).