Rossella

Red rosella flowers that have been dried and brewed into a cup of tea that is slightly acidic flavor able to overcome cough, uric acid, cholesterol, hypertension, radical free, and refreshments (tonic). In addition, based on scientific research conducted Sudanese scientist, red rosella also efficacious for lowering blood pressure (hypotensive), respiratory tract antikejang getting by, anticacing (anthelmintic), and antibacterial.

http://id.shvoong.com/medicine-and-health/alternative-medicine/1781069-khasiat-teh-rosella/