"Why would you wanna overdose on cough medicane have you got a headache?"

I think she wants to know because she might be trying it sooner or later. Depending on ur weight it's 1300-2500 (usually 1250). How much do you weigh? I can tell you that I am 145 pounds and I've done 900mg (60 pills, 3 pill bottles, or robotussin (15mg dex) and I passed out for 17 minutes (first time I have ever fainted). It was the absolute funnest night except for the fact that I almost died.

So I would say the number of bottles would also be affected by the dosage of dxm in each bottle and the size of each bottle. Usually it's 4 oz. or 8 oz of 15mg.

Hope that helps!

EDIT: This would also be affected by any medications that you are taking at the time.