Profile: Sigma-Tau Pharmaceuticals, Inc. focuses on creating novel medicines for the unmet needs of patients with rare diseases. Our prescription products focus on renal, metabolism and oncology. Our products include metabolic Carnitor® (levocarnitine) tablets, oral solution & injection, oncology Matulane® (procarbazine hydrochloride) capsules & renal Carnitor® (levocarnitine) injection. Our ProXeed® Plus is a nutritional supplement that contributes to a man's overall reproductive health. Its ingredients provide clinically proven support required for optimal sperm quality. It is a non-prescription medicine.