Is a baseline blood test really necessary before starting something like this?

Following this because I am in the same place and have no idea what to ask at the appointment.

Following this because I am in the same place and have no idea what to ask at the appointment. Not on a useless object but the pattern is familiar.

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

Is a baseline blood test really necessary before starting something like this?

How do I find the national register if I do not read the language?

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