Dr.ObesityMed said:

My experience ordering cross-border ordering internationally: I've ordered from an Australian compounder.

This is where I part company with the consensus forming above. Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions. What is a personal-import allowance in one country is a controlled-import offence in another.

Adding the numbers, since they settle part of this. Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a trend.

RetaRick_CA said:

Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions.

Adding the part of the answer the thread has not reached. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.

Correct me if the detail matters more than I have assumed.

One thing that is still open after amsterdam_pete’s answer:

What did you change at the same time, and can you separate the two now?

OP back with an update, since a thread like this is useless without one.

Update — I was wrong in the opening post, specifically about the direction. Correcting it here rather than editing it away.