Bone Products (Bitul and Blios #32 - Shulchan Aruch YD 99:1)
Rabbi Dovid Cohen
Bone Products: Gelatin; Glucosamine; Calcium; L-cysteine; In a mixture; Bone char; Other (bee legs, tevillas keilim, b'lios, chicken bones). See seforim by Rabbi Cohen at www.kashrushalacha.com