Is the treatment prescription-only?

It depends on the active ingredient. Finasteride and oral minoxidil are prescription-only; you can only get them with a doctor's prescription. Topical minoxidil as a spray, by contrast, is available without a prescription and only available from a pharmacy.

The prescription for the prescription-only ingredients is issued by a doctor after your answers from the health questionnaire have been reviewed. It is only issued if a therapy is medically suitable for you. A prescription is therefore never guaranteed.