Can SIMVASTATIN (Zocor), 10 mg once per day, cause yellow diarrhea? I have been on SIMVASTATIN for about 8 weeks with no problems, but for the last 5 days I have had experienced yellowish diarrhea of varying intensity. I do not have any fever, upset stomach, pains , or any other symptoms. I do have an appetite and in fact are hungry. I am male, 55 6 ft, 255 lbs and am also taking Amlodipine Besylate 10 mg 1/day and Losartan 50 mg, 1/day for high blood pressure, along witb 1 mg of lorazepam at night.