My bad, I was wrong......
The law of abstinence forbids the eating of flesh meat and of broth made of meat, but does not exclude the use of eggs, milk and the products of milk (namely cheese and butter), and any seasonings of food, even those made from the fat of animals. (Canon 1250.)
The real question is gelatin which is found in many lollies.
Manufacturers produce gelatin by processing animal bones, cartilage, and skin. They may use the bodies of cows or fish, for example. The process extracts the collagen, a fibrous protein that connects muscles, bones, and skin, and turns it into gelatin, a flavorless, colorless, jelly-like substance.