Benadryl promotes sedation not emotional regulation, and is classed as an antihistaine not a benzodiazepine. You would be better off acquiring the latter

[He stares at some spot on the floor, processing active ideas while deep in thought.]

Myristicin - nutmeg - is something everybody processes differently. Plus the conversion rate would be... insufficent.

[Look, he's a goddamn nerd, don't beat him up.]