> In this work, it was found that in harvested poppy seeds, and thermally processed poppy seeds (with and without a food matrix), if used in normal levels would not exceed the recommended acute reference dose. It was also shown that the levels of all alkaloids reduce when thermally processed, in comparison with harvested, untreated seeds.
But basically a lot. Which is why poppies are processed for heroin. Not eaten straight.
It depends on what strain, and whether they've been cooked into a bagel or are uncooked: https://www.frontiersin.org/articles/10.3389/fchem.2020.0073...
> In this work, it was found that in harvested poppy seeds, and thermally processed poppy seeds (with and without a food matrix), if used in normal levels would not exceed the recommended acute reference dose. It was also shown that the levels of all alkaloids reduce when thermally processed, in comparison with harvested, untreated seeds.
But basically a lot. Which is why poppies are processed for heroin. Not eaten straight.