What pharmacies have generics?

[Ididnotinhale]

Hi, swim's brings morphine to his grandfather because he is bedridden. Swim's grandfather claims that he is allergic to non generic ms-contin. He has told swim that the gel makes him nauseous.
Swim has told him to talk to his doctor about it, but he refuses and gets really pissed anytime swim brings him non generic ms-contin, mainly any type that turns to gel. (swim has no idea how his grandfather would know they turn to gel)

To keep swim safe from any yelling his grandfather might due for "fucking up", does anyone know which pharmacies cary generic ms-contin or atleast ones that don't turn into gel.

thanks