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:
Sausage Egg & Cheese Biscuit 1 serving (397 cal/25g fat/30g carbs/13g protein) 11 (10.5) Sausage Egg & Cheese Croissant 1 serving (386 cal/26g fat/25g carbs/13g protein) 11 (10) Spicy Empanada 1 serving (417 cal/21g fat/2g fiber/44g carbs/13g protein) 11.5 (10) Cafe QuikTrip Sandwiches. BBQ Pork Rib 1 serving (672 cal/40g fat/8g fiber/56g carbs/22g protein) 18 (16)