Are amino acids (creatine and branched-chain amino acids) derived from unlawful meat permissible?

Amino acids are organic compounds that form proteins, containing carbon, hydrogen, oxygen, and nitrogen, with some also containing sulfur. Amino acids are manufactured through fermentation, enzymatic reactions, and protein breakdown. It is permissible to extract them from animals that are Islamically slaughtered and permissible to consume. It is forbidden to extract them from prohibited meats. If the amino acids are from Islamically slaughtered animals, they are pure. However, if they are from a dead animal (carrion) or an animal not Islamically slaughtered, they are impure, and it is forbidden to consume them unless they have undergone a complete transformation into another substance. It is preferable to use plant-based amino acids instead of animal-based ones.