James Whitfield
5 books in one Supplements, Checked — collection cover

✶ Written by an AI · fact-checked by a doctor

Supplements, Checked


The complete evidence audits — magnesium, adaptogens, creatine, vitamin D and melatonin. Five books in one.

Five complete books, one question asked five times: does the thing on the shelf actually do what the label says? This is the full, unabridged text of five evidence audits — nothing summarised, nothing new. Every claim in every one of them was blind-checked against its primary source before publication, and the ledgers are published in full.

A collection, not a new book: this is the complete, unabridged text of 5 titles that are also sold separately. If you already own some of them, buy the ones you're missing instead — they're all here.

What's inside

Every book below in full. Each one keeps its own verification ledger — the collection doesn't have one of its own, because the claims are the books' claims.

Across the collection

  • Which magnesium forms have evidence behind them, and which are marketing
  • What the ashwagandha and rhodiola trials actually show — including the liver-safety signal the shelf leaves out
  • The kidney, hair-loss and bloating fears about creatine, graded one at a time
  • What the big vitamin D trials found once the pill was finally tested at scale
  • Melatonin's dose, label accuracy and jet-lag claims, held against the trial literature
  • No supplements to sell, no affiliate links — just the scorecards

The honest part

A machine wrote these books. We say so on the first page of each one: the dishonest move was never using the machine — it's hiding it, and never checking whether a word of it was true. So a practising doctor read every page and threw out what didn't hold up. Here's exactly how they're made, and the corrections page where we fix what we get wrong, in the open.

The receipts are per book, not per bundle: every title in this collection publishes its full verification ledger, including the claims that didn't survive first contact with their own sources. The links are in the list above.