A daily tick grid can tell you whether you took a supplement. It cannot tell you whether the thing you hoped would change was actually different. This planner adds the missing pieces: a question, a baseline, complete comparison periods and a decision rule written before the result.
Define one useful question
Choose one primary outcome that matches why you are taking the supplement. “Feel better” is too broad. “Morning sleep quality, rated from 1 to 10 at 8am” is something you can record consistently.
Plan a real comparison
If you have not started, record the same outcome first so you have a pre-start baseline. For a suitable non-prescription supplement, complete blocks are more useful than treating a single missed dose as a clean off-day.
Dosette’s default guided experiment is two weeks on, two weeks off, repeated once. That eight-week pattern is a practical default, not a universal scientific rule. Onset, carryover and whether a break is appropriate vary.
Decide what to log
Keep the daily record small enough to complete. Record whether the planned dose was taken or skipped, your primary outcome at the same point each day, and only the context likely to change how you interpret the result.
Daily minimum
Context worth noting
Review the result without upgrading it
First check whether the record is complete enough to compare. Then ask whether the difference was large enough to matter, whether it appeared again, and what else changed at the same time. “No clear result” and “not enough data” are both legitimate conclusions.
What this template does not do
It does not tell you which supplement to take, choose a dose, decide whether a break is safe, or turn one person’s observations into clinical evidence. A numerical difference can also be too small to matter in daily life.
If you want the reasoning behind the block comparison, read Dosette’s methodology. For a fuller walkthrough, see how to tell if a supplement is actually working.
Prefer to keep the log on your phone?
Download Dosette free from the App Store or Google Play. New to Dosette? Track up to three active supplements for free; medicines do not count towards that limit. A one-time lifetime upgrade unlocks unlimited active supplements, with your local price shown in the app before you buy. Dosette provides guided experiments for eligible supplements, records outcomes you choose and keeps the main comparison cautious when the data is incomplete.
Core records stay on your phone, with no Dosette account or health-data server. Dosette is not a medical device and does not diagnose, recommend doses or tell you to start or stop treatment.