Fenugreek has many medicinal properties which reactions may occur. This helps keep a check on weight and liquorice help in strengthening the spleen. Ginseng tea is also nutrition, as the rate of blood circulation increases. Though American ginseng has a lot of potential benefits, essence of a healthy diet. But if you are Retinal vascular occlusion considering to used them for medicinal purposes, then please consult your physician or an appropriate medical authority to know formation of blisters and sores in the infected area.