St. John's Wort (Hypericum perforatum) GENERIC NAME: Hypericum perforatum. BRAND NAME: St. John's Wort. DRUG CLASS AND MECHANISM: St. John's wort is a commonly used over-the-counter (OTC) dietary supplement that is used to treat mild depression, anxiety, and sleep disorders. St. John's wort is a plant that has bright yellow flowers.
Coronary artery chronic total occlusion (CTO) is complete or almost complete blockage of a coronary artery for 30 or more days. Coronary CTO is caused by a heavy build-up of atherosclerotic plaque within the artery.
Retinal Vein Occlusion. Retinal vein occlusion is blockage of one of your retinal veins, which are blood vessels that carry deoxygenated blood back to your heart. Central retinal vein occlusion (CRVO) is a blockage in the main vein of your retina, which is called the central retinal vein.