SECOND TIME TRYING DXM

[innatrance]

I need your help, I'm planning on drinking a 100 ml bottle of Dimetapp extrastrength that contains 400 mg of DXM, 80 mg of Brompheniramine Maleate and 200 mg of Phenylephrine Hydrochloride. I've heard in different threads that Brompheniramine is a deliriant if taken in high doses. So i'm wondering if I can OD on 80mg of Brompheniramine, and if I could, I would go out and buy some DXM only medicine but this was all I could find in my medicine cabinet.

Also what sort of effects can i expect from 400mg of DXM?