Hi Laura
My partners type 1 so not sure if this will work for you but he has Asda's own low fat Greek yoghurts, we just buy one big pot and he adds blueberrys to it. It doesn't seem to have any effect on his blood at all. He also takes multivitamina, omega 3, cod liver oil and garlic every morning. Not quite sure if they do any thing but he's in good health really so just keeps taking em!
sarah x