Please choose the correct ending to complete the given sentence: Health: [header] How to use buckeye for health [title] Take horse chestnut extract for chronic venous insufficiency. [step] Cvi is a condition where veins in the legs have trouble circulating blood back toward the heart. This can cause swelling, varicose veins, and other problems.

Ending1: You can get horse chestnut extract at any pharmacy or bookstore. This is best available on foot or in small packets. Ending2: Cvi is often used as a prescribed treatment in diabetics. [substeps] You may buy this extract online or at a department store. Ending3: One of the most accepted uses of horse chestnut is to treat this condition. [substeps] Horse chestnut is taken as an oral supplement for this purpose. Ending4: Therefore, take your horse chestnut extract if you have any symptoms. Deficiency of varicella's compound chlorophyll, which is a compound found on horses' skin and bones, will lead to anemia.

Answer format: ending1/ending2/ending3/ending4