- Name: DOI KHAM 50% Passion Fruit Juice 1 l - Brand: DOI KHAM - Unit Amount: 1 unit(s) High in Vitamin C: Helps strengthen blood vessels, helps in the process of fighting free radicals, helps in the creation of collagen tissue and cartilage tissue. How to Preserve: Store in a cool, dry place. Do not store for extended periods; consume immediately.