Yes, almond milk is low histamine. However, most commercial almond milks are made with inflammatory carrageenan and sweeteners, and are fortified with a variety of vitamins and minerals. This ups the number of variables your gut has to deal with, and this can mean upping your inflammation, especially if your stomach is still in a delicate state (as in your first month or so of a low histamine diet). Consider making your own almond milk at home in order to avoid these additives, or wait until your second or third month of elimination diet to reintroduce almond milk.