A guide to Quassia amara covering bitter wood and bark, traditional digestive use, quassinoid research, pregnancy caution and safety. Read more...

Quince (Cydonia oblonga) is an aromatic Rosaceae fruit with a long culinary and traditional-medicine history. This guide separates ordinary quince fruit from leaves, concentrated extracts and seed preparations; reviews the limited human research on reflux and nausea; and explains why quince seeds and cyanogenic compounds deserve separate safety attention. Read more...