pat_auckland said:

The useful checklist is about verifiability rather than presentation.

My experience ordering cross-border ordering internationally: I've ordered from an Australian compounder. Customs can be hit or miss.

Shipping time: 5-10 days
Customs clearance: was seized once, reshipped free
Quality: Janoshik tested at 99.5% purity

International ordering adds complexity but can save 60-80% compared to US prices. Research your country's import laws first.

BethLabQueen said:

Right, and one flattering data point from a group buy is not consistency.

Saving this. It is the first explanation that did not require me to already understand it. Adding it to my notes with a link back to this thread.

pat_auckland said:

The useful checklist is about verifiability rather than presentation.

I disagree that testing history is decisive. It tells you what a supplier did when they were being watched. Continuity of behaviour under stress — a late shipment, a failed test, a complaint — is more predictive than any run of good results.

The figures, for anyone assembling their own picture. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.

Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source. Carry on.