Can taking vit C with fish kill you?

Shrimp and Vit C. Furthermore, shrimp does not turn into arsenic when it encounters vitamin C. It just doesn’t happen. Shrimp may contain low levels of arsenic, as it is a basic element and occurs naturally in the environment, but it is not a dangerous dose and your body can deal with it. Unless you eat shrimp until you sprout those weird antennae, then you might be in trouble.