Aroy D brand is the only brand "pure" brand I've found - no preservatives or any additives. You can order it by the case on Amazon in either 8.5oz or 33.8oz cartons. I've had eczema my whole life and a fairly severe tachycardia since middle school - I've seen correlations between eczema and food (specifically gluten and dairy), but it never occurred to me that the tachycardia might be triggered by food as well. Interesting stuff! Thanks for sharing.