Nitrous oxide

• Actor Demi Moore's trip to the emergency room was reportedly spurred by an apparent seizure triggered by inhaling the drug nitrous oxide, more commonly known as laughing gas or whippits.
(Time)
• Whip-its: The high you can buy at Wal-Mart. While most people use nitrous oxide canisters to make whipped cream, partyers inhale them for a brief, euphoric high.
(New York Daily News)
• Nitrous Oxide may not be a laughing matter after all. Laughing gas, known to dentists worldwide as nitrous oxide, is widely used as a short acting anesthetic for dental procedures.
(Monsters and Critics)
• After days of speculation, the substance involved in Demi Moore s hospitalisation has been revealed, by TMZ.com.
(Contactmusic.com)
• LOS ANGELES, Jan. 26 (UPI) -- Demi Moore went to the hospital this week after she suffered a bad reaction while inhaling nitrous oxide, sources close to the U.S. actress told TMZ.
(United Press International)
• While the many reported reasons for Demi Moores recent hospitalization have varied from exhaustion to substance abuse, TMZ is now saying nitrous oxide was behind the health scare.
(MTV)
• TMZ came out shortly after claiming she was actually hospitalized for substance abuse. On Thursday, more rumors surfaced that Moore was using whip-its. Whip-its are steel chargers filled with nitrous oxide that are often found in whipped cream canisters.
(9News)
• Additionally, DEI is proud to announce their first company sponsorship in diesel motorsports.
(msnbc.com)
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(Worldnews.com)
• Demi Moores friend called paramedics on Monday night, (23.01.12) - after the actress inhaled a dangerous amount of nitrous oxide.
(Musicrooms.net)