Supply-duration traps in marketplace comparison
Titration waste on GLP-1s: Multi-month vials at a fixed concentration may leave unused medication when patients move up the ladder mid-vial. Model cost per administered dose, not per shipped vial. Adherence and refunds: Cash-pay programs that sell multi-month packages need COGS aligned to what patients actually inject — not what you ordered optimistically. Pharmacy switches: Smart routing may fulfill a multi-month line from a different compounder than monthly refills, changing both drug and shipping economics mid-program.
503B bulk vs 503A patient-specific: Multi-month often appears as 503B office stock or larger 503A vials — different channels with different marketplace tiles. Confirm which channel your patient program actually uses before comparing durations.