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Letters to the Editor
August 2000

Fluvoxamine Strongly Inhibits Melatonin Metabolism in a Patient With Low-Amplitude Melatonin Profile

Arch Gen Psychiatry. 2000;57(8):812-813. doi:10.1001/archpsyc.57.8.812

Fluvoxamine maleate increases early morning concentrations of melatonin in humans.1,2 The serotonin reuptake inhibitor was therefore assumed to enhance the melatonin production by providing a precursor surplus of serotonin. Alternatively, fluvoxamine might inhibit the melatonin metabolism. The following case report strongly supports the second hypothesis.

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