Pepsin
A protein-digesting enzyme from pig or cattle stomach, used in cheesemaking and pharmaceuticals.
Why this is a critical point
Pepsin is extracted from animal stomach mucosa — usually pig (haram) or cattle (halal if slaughtered correctly). Because pork-derived pepsin has historically been cheaper and easier to mass-produce, it is an important critical point in imported cheese and digestive supplements.
Halal alternative
Pepsin from halal-certified cattle stomach, or a microbial protease enzyme instead.