A member asked:

How long is it supposed to it take for laughing gas to work?

5 doctors weighed in across 2 answers
Dr. Theodore Davantzis answered

Specializes in Dentistry

A few minutes: After that, you should be good to go...

Answered 8/9/2013

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2-3 minutes: Laughing gas works by breathing in a mix of nitrous oxide and oxygen. The higher the concentration of nitrous or laughing gas, the faster the affect. However in no case can the percentage exceed 70% higher is unsafe.

Answered 8/23/2013

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