I think the doctor is lying

M17. Dad 50.A famous doctor in Pakistan made a video which my dad watched. My dad can't produce the proper amount of insulin so he takes Medicine. But this doctor said that all the insulin medicine and insulin shots are actually dangerous because they only remove excess glucose from blood. But not the gallbladder so the glucose builds up and explodes. Is this true. He isn't taking his medicine and I am kinda getting worried. The medicine is called trivia or something.