Which I love (but still get reactions to it which I described in more details here). But it's mostly made from sheep milk with varying amounts of goat milk as well. A lot of people reported hard cheese to be constipating, and that was without any knowledge of the potential opioid effects of cow dairy.I agree on both counts and in fact I do not do well when consuming more than 1L of milk daily. Cheese seems fine in any amount though, especially the feta variety.