Name the active ingredient, not just the brand. It makes these threads searchable years later.

Personal experience, labelled as such, is exactly right here. Nobody is prescribing.

Narrow conclusion.

Worth repeating that this is not medical advice and the answer often depends on who you are.

Stupid question: how do you know whether what is in the vial matches the label at all?

Same here.

Is it normal to feel worse before better? Nobody told me that.