No, ASDA Mint Humbugs 200g are not vegan-friendly.
ASDA Mint Humbugs 200g are unsuitable for vegans because they contain milk. I guess we will just have to endure bad breath…

Ingredients
Glucose Syrup, Sugar, Invert Sugar Syrup, Sweetened Condensed Skimmed Milk [Skimmed Milk, Sugar, Lactose (Milk)], Palm Oil, Colour (Plain Caramel), Butter Oil (Milk), Flavourings, Salt, Emulsifier (Lecithin), Molasses