The immunotherpay can give children and adults three extra years before they need to use insulin.
Hollie's parents say a drug trial for eczema at Sheffield Children's Hospital gave her her life back.
Hull University Teaching Hospitals said people should buy common medicines like aspirin from shops.
Ben Shaw from Reids' New Street pharmacy says the shortages have been "a concern for a while".
Alexander Robinson has launched a campaign in his brother Oliver's name after he took his own life.
Police began investigating when an East Somerset pharmacy reported some of its stock was missing.
She died after being prescribed fentanyl and codeine for chronic pain, an inquest hears.
Anthony is now having family friends post the drug from France to help give him a quality of life.
Two men who were selling illegal prescription drugs "like sweets" are given suspended sentences.
