@mlz This is from the label: Niacin 500mg, L-Glutamine 1000mg, MSM 1000mg, Quercetin 400 mg, Curcumin 200mg, Bromelain 200mg, Papain 200 mg, Boswella serrata 200mg, Ginger 100mg, N-Aceytl-Cysteine 100mg, Rutin 100 mg, Skullcap 100mg, Serrapeptidase 20mg. Obviously I don't know what some of these terms are but if the Dr. said it's OK that is fine with me!