The Supplement Audit

The Supplement Audit  
The Supplement Audit - Build Your Protocol
Inside the playbook

What you'll actually get.

The framework

  • The seven-question audit that tells you in under a minute if a supplement is worth keeping
  • How to read a third-party testing certificate and spot the ones that aren't actually independent
  • Which claims on the label are regulated and which ones a brand can print without proof
  • The dosage math that reveals when a “clinical strength” product is a rounding error

The audit checklist

  • A printable checklist to run against every bottle currently in your cabinet
  • The AI prompt that pulls the actual research on any ingredient in under 30 seconds
  • The five supplement categories where spending more is justified, and the six where it isn't
  • How to build a stack that costs under $50 a month and does more than the $200 one it replaced
Kathryn Crosby, founder of Build Your Protocol
Why I wrote this

I owned seventeen bottles and could explain maybe four of them.

That was the walk-out plan from a $1,500-a-month functional medicine protocol: seventeen products, three of which had to be ordered from a wholesaler in Germany. I sat in the parking lot and did the math on what a year of that would cost, then went home and ran every single bottle I already owned through the same seven questions I now put in this playbook. Eleven of them didn't survive the audit. The three that did cost about $40 a month combined.

— Kathryn Kathryn Crosby · 44 · Single mom of four · Operator
Want more?

The Supplement Audit is one piece of the method.

At checkout you can upgrade in one click. Most readers who run the audit eventually grab the full method.

Mini 06 · $29

The Supplement Audit

Just this playbook. The seven-question framework and the checklist to run your own cabinet through it.

$29
All nine · $179

The Library Bundle

Every playbook. Six minis + three parents. Save $96 vs buying separately. Future updates included.

$179

All upgrade options are available as one-click add-ons at checkout. No upsells after purchase.

Chapter 1 is free. Sample before you buy.

No refunds, no return windows, no “give it 30 days.”

The first chapter — the seven-question audit itself — is yours for an email address. Run it against one bottle before you buy the rest.

Send Chapter 1
Honest answers

Things you're probably wondering.

Is this medical advice?

No. None of it is. I'm an operator who reads studies and runs my own cabinet through this exact process. If you're on prescription medication, check with your doctor or pharmacist before changing any supplement.

How long until I see results?

The audit itself takes about a minute per bottle. Most readers clear out half their cabinet in one sitting and feel the relief in their wallet the same week.

Will I have to buy expensive supplements?

No. The entire point of this playbook is that most of what you've been sold doesn't survive the audit. The replacement stack I recommend runs about $40 a month total.

Can I upgrade to a bigger playbook later?

Yes. At checkout you can add the AI Wellness Audit ($79) or the full Library Bundle ($179) in one click. After purchase, you can buy additional playbooks at full price on the Library page anytime.

What's the refund policy?

There is none. All sales final. That's why Chapter 1 is free — so you can sample the method before you spend a dollar. If the free chapter doesn't sell you, the full playbook won't either.

Who is this not for?

Women who like the ritual of a seventeen-bottle shelf. Women who trust a brand's own claims over an independent test. Women who want to be told to keep buying.

One $29 playbook. Seven questions. A cabinet that finally makes sense.

✓ Instant PDF delivery · ✓ Secure Stripe checkout · ✓ All sales final