> Coffee served at starbucks is in much lower quantities and milder concentrations than what one would normally ingest or inhale in harder drugs. A common dose

> Coffee served at starbucks is in much lower quantities and milder concentrations than what one would normally ingest or inhale in harder drugs. A common dose of LSD is about 50-150 ug (ug as in micrograms). A Starbucks Grande Coffee has 330mg of caffeine inside. That is THREE orders of magnitude! So, to sum it up: you can't compare dosages from different substances. Also: 330mg is a lot of caffeine.