traveltech_sara said:

It is worth asking what the claim would look like if it were false.

Can confirm. Same sequence, different timescale. Nothing to add that would improve it.

lisa_labSD said:

Practical: whatever you change, write down the date and the reason.

Coming at lisa_labSD’s question from a different direction. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.

The figures, for anyone assembling their own picture. 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.

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

How long did you give it before you decided it was working?

Moderator note: a post naming a supplier has been edited. Discuss suppliers in the review sections, not here. Carry on.