These things act on the opiate centers of the brain and elsewhere where there are opiate receptors.

Milk has exorphins in it which are attracted to the opiate centers of the brain and elsewhere, so it might serve as a temporary relaxant, not only because of the exorphins but also because of the calcium in it.

Bread which contains gluten has exorphins in it which act on opiate centers. It's
highly addictive, though, but far easier to withdraw from than addictive drugs are.
You might use that temporarily as a relief in recovering from drug addiction.

Supplementing with a high quality vitamin B series helps nerves, too; I would add
that to my diet--and remember, vitamins have no ability to help unless they are
taken with food. Try a ham or beef sandwich with a glass of milk and a vitamin B
for relief!