QB-Zyme Pro is a professional "signature" product clinically formulated by Progressive Laboratories Medical Director, Dr. Mitchell A. Fleisher, M.D., D.Ht., D.A.B.F.M., Dc.A.B.C.T. This quercetin/bromelain complex is designed to nutritionally support the body's natural defenses.Suggested UseTake two to three vegetable capsules two to four times daily, in between meals if possible or as directed by a doctor.Serving Size: 3 Vegetable CapsuleServings Per Container: 30Amount Per ServingVitamin C (as magnesium ascorbate)249 mgMagnesium(as magnesium ascorbate)20 mgQuercetin750 mgBromelain (2000 GDU/g)375 mgPapain (48000 USP/mg)225 mgPancreatin 10X75 mgProtease250 USP/FIPAmylase250 USP/FIPLipase20 USP/FIPRutin75 mgOther Ingredients:hypromellose (vegetable capsule), maltodextrinWarningsTAMPER EVIDENT BAND AROUND CAP AND SEAL ON BOTTLE. DO NOT USE IF EITHER SEAL IS BROKEN OR MISSING. KEEP OUT OF REACH OF CHILDREN.Quercetin is not recommended for pregnant women or nursing mothers. Patients taking prescription medications should consult their physician for possible interactions.