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Place the mouthpiece in your mouth, between your teeth. Close your lips around it. Do not put your tongue inside the hole or block the vents in the back.

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Review Date: 05/01/2011
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., and Denis
Hadjiliadis, MD, Assistant Professor of Medicine, Division of
Pulmonary, Allergy and Critical Care, University of Pennsylvania,
Philadelphia, PA.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
