A patient is admitted in a comatose state after ingesting 30 capsules of pentobarbital sodium. A friend of the patient says, 'Often my friend drinks, along with taking more of the drug than is ordered.' What is the effect of the use of alcohol with this drug?
Correct Answer: C
Rationale: The correct answer is C: A synergistic effect occurs. When alcohol is consumed with pentobarbital sodium, both substances depress the central nervous system. This results in an enhanced sedative effect, leading to respiratory depression, coma, and potentially death. The combined effect of the two substances is greater than the sum of their individual effects. Choices A and B are incorrect as alcohol does not stimulate the metabolism of pentobarbital sodium nor diminish its effect. Choice D is also incorrect as there is a significant effect when alcohol is combined with this drug.