The collagen used in commercial products is not human collagen, it is usually cow or pig collagen, it is similar enough to have the same effect as human collagen but different enough that the body recognizes it as foreign. Anything the body recognizes as foreign has the potential to cause allergies.
There are 470 calories in a 1 biscuit serving of Hardee's Sausage & Egg Biscuit. Calorie breakdown: 57% fat, 30% carbs, 13% protein. Related Biscuits from Hardee's:
Hardee's - Sausage Egg & Cheese Biscuit From Website American Cheese. *Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.