a) Is it required a prescription by an Oncologist?
Though a prescription is not must. However, your treating physician should be having information about any product that you are using apart from Chemotherapy.
b) Can it be taken with any other Medicine?
Immunokris can be taken along with Chemotherapy Drugs. Immunokris does not anyway interfere with any Chemotherapy Drugs. Immunokris acts as Anti-oxidant and Free Radical Scavenging Agent, thereby minimizing the side-effects of the chemotherapy drugs (the side effects mainly caused due to production of Reactive Oxygen Species (ROS) & Oxidative stress).
c) It is only for the months after the main treatment or the maintenance treatment has been completed?
Side effects of Chemotherapy drugs last even after cessation/completion of Chemotherapy. Therefore, it is advisable to continue taking Immunokris 3-6 months after completion of Chemotherapy.