heroin is the most deadly drug so far.
Crack cocaine and nicotine, in that order.
Methamphetamine
probably do to depression sadness
The most prescribed drugs worldwide, as of Dec. 2007, according to IMS Health, which tracks such data for the pharmaceutical industry, were: 1. Lipitor 2. Plavix 3. Nexium 4. Seretide/Advair 5....