What a dosing spreadsheet cannot do, and when that starts to matter

What a dosing spreadsheet cannot do, and when that starts to matter

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A spreadsheet is a perfectly good place to start. Date, dose, a note. For the first two months it is faster than any app and it never nags you. The reason people move off it is not features, it is that a spreadsheet has no idea that two of your columns are related.

The relationship that breaks is dose to vial. In a spreadsheet, units and milligrams are two independent numbers you promise to keep consistent. The promise holds until the day you open a vial at a different concentration, at which point the historical unit column silently becomes meaningless and the new rows are computed against a strength you did not record.

The second thing it cannot do is intervals. A weekly schedule is really a series of gaps, and gaps are what correlate with how you feel. Computing them by hand across a date column is possible and nobody does it, so patterns that sit right there in the data go unseen for months.

The third is the review. Six months in, the useful questions are comparative: was the second month at this dose easier than the first, did the late doses cluster around travel, did nausea track the step or the gap. Those need the data shaped rather than listed. That is roughly the point at which a purpose-built peptide dose calculator earns its place, and before that point it honestly does not.

If you are still on a spreadsheet, the single highest-value change is adding a concentration column and filling it in for every past row you can reconstruct. Everything else can wait.

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