Which is a common side effect of nitrous oxide?

Which is a common side effect of nitrous oxide?

• A. Headache
• B. Nausea
• C. Dry mouth
• D. Drowsiness

Answer: (B)

Nausea is a well-recognized and common adverse effect of nitrous oxide when used as an inhaled anesthetic or analgesic. Patients often report nausea or vomiting, especially at higher concentrations or with longer exposure, which makes this side effect more likely than the others listed. Dry mouth is not typically associated with nitrous oxide, and drowsiness from this agent is usually mild and not as consistently observed. Headache can occur but is less directly linked and less frequent than nausea in the context of nitrous oxide administration. Therefore, nausea best fits the typical side effect profile of nitrous oxide.

Nausea is a well-recognized and common adverse effect of nitrous oxide when used as an inhaled anesthetic or analgesic. Patients often report nausea or vomiting, especially at higher concentrations or with longer exposure, which makes this side effect more likely than the others listed. Dry mouth is not typically associated with nitrous oxide, and drowsiness from this agent is usually mild and not as consistently observed. Headache can occur but is less directly linked and less frequent than nausea in the context of nitrous oxide administration. Therefore, nausea best fits the typical side effect profile of nitrous oxide.