I have a 8oz bottle of adult Robitussion DM..If i drank the whole thing, will I OD?

i dont want to overdose, ive experimented with robitussion dm and delsym before and have had great experiences..but they were 4oz bottles, this is a 8oz bottle with 10mg of dextromethorphan per 5ml tsp. an it has 237ml total.. so im not sure exactly how much dxm that is altogether but i want to drink it all and i'm just wondering will i die ?