Yes, plain cream cheese is low histamine. This assumes a cream cheese made with few ingredients, a recent production date, and minimal processing. The most basic cream cheese is just pasteurized milk, cream, lactic acid, and a stabilizer. Very small amounts of a stabilizer like carrageenan will only bother the most sensitive people, but many find that they can’t tolerate any dairy in the first few weeks of their elimination diet. For this reason, you may want to avoid cream cheese for the first month or so of your low histamine diet, and then reintroduce it with caution.