I Had Malaria And Now After Treatment I Am Discharged

i had malaria and now after treatment i am discharged from hospital. my doctors has given me to take medicine for malaria to prevent it from starting again . my dosage are one pantocid dsr in the morning and primaquine at a night withe falingo kit .question is what is the role of pantacide dsr plays for diases like malaria .please tell me its side effects case i am felling test less in the morning. slightly pain in the stomach at night(may be because of primaquine)please give me advice for this treatment