Different Manufacturers for the med he is on happen I am afraid unless the pharmacy you use has a lot of patents on the same med then they will frequently change suppliers. I found this to be the case when I was on the first med they tried me on.
I would speak to the PD nurse whom your husband is under failing that his PD specialist or Neurologist.
If that is difficult to arrange I appreciate they can be somewhat difficult to reach by phone call the help line on here and a PD nurse will call you back.
Hope you get it sorted BB x