The collagen in Fish Calorad is taken from the skin of a tuna fish.
Most seafood allergies are from shellfish.
But if you are still unsure the best thing to do is to do an external test. Place a drop of Calorad on the inside of the wrist, apply a bandage and remove after a few hours. If you see a reaction, do not use the product. If you are at all hesitant, please consult your doctor.