I'm seeing a fair amount of discussion with newcomers about skipping doses.  I've created a spreadsheet that shows the % concentration decay, comparing daily dose, alternate day dosing and skipping 2 days. This chart is for Cymbalta (duloxetine) or a drug that has a 12-hour half-life.   The chart is in a spreadsheet (.xlsx).  I'm going to refine it, maybe showing every 12 hours instead of every 24 and setting it up so that any half-life can be "inputted." Then I'll attach it to another