Josh, I'll have to check out the book! Jody, just link back to your site. Hopefully you have analytics set up for your website, which it make it easier for you to track how many people clicked on that link from Facebook--helping you understand how important your Facebook business page is for your company.
The average (or more correctly the arithmetic mean) amount of vitamin k contained in 100g of grapefruit juice, based on the list below of 6 different items under the general description of grapefruit juice, is 0.02 ug of vitamin k.
Active Ingredients: Grapefruit Seed Extract 42.72%, Vitamin C (Ascorbic acid) 17.28% (max., primary source of Vitamin C is from the extract). Inert Ingredients: Glycerin (USP 97.7 and kosher) 38.22%, Moisture 1.78% (max). INCI: Grapefruit Seed Extract (Citrus grandis). Flash point: 292F deg.