'Bath salts' timeline
"Bath salts," the synthetic stimulant 3, 4-Methylenedioxypyrovalerone, or MDPV, has been around for decades.
MDPV was developed in the 1960s, and has been used for the treatment of chronic fatigue, but caused problems of abuse and dependence.
• 1969: Boehringer Ingelheim files a patent application for MDPV.
• 2005: MDPV appears as a recreational drug; first mention on Drugs-Forum.
• 2007: First seizure of MDPV as a recreational drug, by customs officials in the German state of Saxony. The drug had been shipped from China.
• 2008: First seizure of MDPV in the United States.
• 2009: MDPV made illegal in Denmark.
• 2010: MDPV made a controlled drug in the United Kingdom and Sweden. First reports of the widespread retail marketing of "bath salts" containing MDPV in the United States.
• 2011: MDPV sale and possession are banned in the states of Florida and Louisiana and North Dakota, with legislation being introduced in many other states (including Pennsylvania).
Source: Presentation by Glenn Duncan, Executive Director, Hunterdon Drug Awareness Program, Flemington, New Jersey