Which statement describes the interaction between methylphenidate and monoamine oxidase inhibitors (MAOIs)?

Which statement describes the interaction between methylphenidate and monoamine oxidase inhibitors (MAOIs)?

• A. It may increase hypertensive crisis.
• B. It has no significant interactions.
• C. It prevents dehydration.
• D. It negates caffeine effects.

Answer: (A)

When a stimulant like methylphenidate is used with MAO inhibitors, the interaction hinges on how both drugs affect norepinephrine levels. Methylphenidate increases the release and blocks the reuptake of norepinephrine and dopamine, raising their levels in the brain and body. MAO inhibitors prevent the breakdown of these monoamines. Put together, they can push norepinephrine to dangerously high levels, leading to a hypertensive crisis with symptoms such as sudden, severe high blood pressure, headache, sweating, palpitations, and chest pain. This is why the combination is avoided or used only with careful medical supervision and an appropriate washout period when changing therapies. Other options don’t fit because the combination does carry a significant interaction, not a lack of interactions. It doesn’t conceptually relate to dehydration prevention or negating caffeine effects.

When a stimulant like methylphenidate is used with MAO inhibitors, the interaction hinges on how both drugs affect norepinephrine levels. Methylphenidate increases the release and blocks the reuptake of norepinephrine and dopamine, raising their levels in the brain and body. MAO inhibitors prevent the breakdown of these monoamines. Put together, they can push norepinephrine to dangerously high levels, leading to a hypertensive crisis with symptoms such as sudden, severe high blood pressure, headache, sweating, palpitations, and chest pain. This is why the combination is avoided or used only with careful medical supervision and an appropriate washout period when changing therapies.

Other options don’t fit because the combination does carry a significant interaction, not a lack of interactions. It doesn’t conceptually relate to dehydration prevention or negating caffeine effects.