How do families coordinate medications without double-dosing?

Hi HN, I’m trying to understand how people actually handle medication routines when more than one adult is involved (partners, caregivers, divorced parents, aging parents, etc.). Alarms help with remembering, but the harder part seems to be certainty: “Did I take it?” / “Did you give it?” / “Was that today or yesterday?” I’ve seen people use pill organizers, notes on the fridge, shared calendars, texts, and reminders, but handoffs still break down and anxiety creeps in. If you’ve dealt with this: What system worked best for you? What failed in practice? Was confirmation/logging more important than reminders? I’m exploring a very lightweight approach focused on confirmed timestamps rather than more alerts, and I’d really appreciate real-world experiences. Thanks! (If anyone’s curious, I’m collecting early interest here: https://medanchor.app/ — totally optional.)