Ventoxen (Venetoclax), generic Venclexta is a prescription medicine used to treat adults with Chronic Lymphocytic Leukemia (CLL), Small Lymphocytic Lymphoma (SLL), Acute Myeloid Leukemia (AML); Venetoclax is a drug that works by helping to slow or stop the growth of cancer cells. Ventoxen manufactured by Everest Pharma Ltd. in Bangladesh.