i used to do the robo trips with the liquid stuff and i found out how many miligrams of dxm i would need to take to get the trip i would need for my weight. so i just did the same amount of dxm for the pills as i would have for the pills. to OD on dxm would take quite a bit more dxm then what i take. the problem you you run into is when you take dxm with other active ingredients such as decongestents, and acetominophen, etc...