T43.616A: Underdosing of caffeine, initial encounter. This is a real ICD10 code that doctors can use as a diagnosis if they see fit. No self respecting Pheo coffee drinker will ever get diagnosed with this. They are excellent, light mugs that will help you get ready for your day.
And of course a portion of each mug sale will help fund medical care, so we think you should buy one.