Anyone have a solid template or training module for documenting and triaging stability outliers? On an accelerated run (40°C/75% RH, week 4) our film-coated tablets in amber HDPE showed about 2% assay drift and slight yellowing, and I’m looking for practical resources that help tie preformulation compatibility and moisture uptake data to packaging selection and headspace oxygen control…
At 40/75 week 4 in amber HDPE, I’d back-calc moisture/O2 ingress from MVTR/OTR and overlay your DVS uptake to size desiccant or jump to foil‑foil or an O2‑scavenger cap — , yellowing always shows up first. > assay drift and slight yellowing, and I’m looking for practical resources that help tie Agree — use a one-page triage that logs DVS curve + package MVTR/OTR + headspace O2; we base ours on FDA Q1A(R2) and USP <671> (Q1A(R2) Stability Testing of New Drug Substances and Products | FDA) — do you have week‑4 headspace O2 data yet?
Had the same “aggregate” moment last year — my fix was a tiny “What this means” column that auto-fills a one‑liner for each row from a Glossary tab (e.g., if CoverageType=Aggregate, it prints “cap across all incidents”). It cut CFO follow-ups in half, though you do have to keep the glossary synced when terms shift — want the template?
Quick check I lean on: after the first month at 40/75 in amber HDPE, open a bottle and let tablets sit 24 h at 25°C/ambient, then record delta E and any assay bounce; if ‘slight yellowing’ or the about 2% drift reverses, I log it as packaging/humidity‑driven and pivot to sorbent or foil, if not I screen peroxide‑prone excipients and the cap liner. Do you have a handheld colorimeter to make that call quickly?