It arrived warm. It sat in the door of the fridge. It was reconstituted three weeks ago and you can’t remember exactly when. This is the book that turns those questions into arithmetic you can actually do — and, for 45 named compounds, tells you what your specific molecule is vulnerable to.
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Storage advice online is a list of rules with no reasoning attached, so the moment your situation doesn’t match the rule, you’re stuck. This gives you the reasoning — which means you can answer questions nobody wrote a rule for.
Every one is sourced, and every source is a PubMed ID, an FDA label section or a named pharmacopoeial standard you can look up yourself.
Across 400 real-world insulin temperature logs, 100% deviated from the recommended range and 17% of sensors recorded sub-zero readings. Your fridge is the least controlled part of the chain, not the most.
At the same pH and temperature, one sequence deamidates with a half-life of about 1.1 days. Change the single neighbouring amino acid and the same reaction takes 455 days. Which molecule you have matters more than how you store it.
It’s a container rule about how long a punctured vial may be used. It appears on no bacteriostatic water label I could find, and says nothing about whether the molecule dissolved in it is intact.
Not weak data. None. No published stability study of any kind. The book says so compound by compound instead of inventing a number — and then reads the sequence directly, which is a method you can apply yourself.
Tesamorelin holds three FDA approvals with three different instructions on how long it lasts after mixing. The only thing that changed is the diluent. It is the closest thing this field has to a controlled experiment.
Part 11: all 45 compounds, each profiled from its own published amino-acid sequence against seven degradation pathways — with the rule set printed in the book so you can apply it yourself and check my work.
One asparagine, one buffer, one temperature. The only thing that changes is the amino acid sitting next to it — and the half-life moves from about a day to well over a year. This chart is from Part 02; the book has forty-five more like it, one per compound.
Three files. One to understand, one to calculate with, one to print and stick to the fridge.
122 pages, 13 parts, 134 numbered sources. The degradation chemistry, the temperature arithmetic, the regulators’ own numbers assembled in one table for the first time I’m aware of, and the 45 compound profiles.
An offline web page — double-click and it opens in your browser. Nothing installs, nothing uploads, no internet needed. Work out what an excursion cost you, track a running total, browse all 45 profiles, search the approved-label data, keep a vial log.
Two printable pages for where the parcels arrive. Receiving inspection and the excursion decision tree on the front; the approved-label table and a blank vial log on the back. Two minutes on arrival is the only chance you get.
No. Every reaction gets explained in plain language before any equation turns up, and the equations that matter come with a worked example and a calculator that does them for you. If you can read a table, you can read this.
There are 45 of them, chosen as the ones people actually ask about — the incretins, the healing peptides, the growth hormone secretagogues, the longevity compounds, the melanocortins. The same 45 appear in the Evidence Ledger, so the two books line up entry for entry.
The free guide checks five widely-repeated claims and shows you where they came from. This is the whole engineering treatment — the chemistry, the arithmetic, the regulators’ data, and a profile of every compound. The free one is a good way to find out whether you like how I think before you pay for 122 pages of it.
Exactly that. When I revise the book — new compounds, corrected entries, new studies as they publish — you re-download from the same link at no cost. Gumroad emails you when a new edition is posted. The next revision is due November 2026.
No, and it never will. That’s a hard line across everything I make. It also means the book can be blunt about the evidence in a way a guide with a protocol section can’t afford to be.
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