Hi care
I'm also type 0 and have some reactions to coconut oil ONLY if I take it alone. I'm taking it now with food only 1 tablespoon each of the 3 meals and have no problems. You might try it this way.
There could be another point that it produce some dye off as it is antifungal antibacterial....and that effect to give you some reactions.
I'm not saying you don't have an allergic reaction just test it differently. I mix 1 tablespoon with some meat and cooked veggies.