question: Hi doctor, I am 35 years old male. My weight is 88 kilograms. I have a problem in erection at the time of penetration. I have lost my erection. My vitamin D level is 7.49 ng/mL. My prolactin level is 9.5 ng/mL, and I have an HbA1c of 5.5 %. I have a random blood sugar of 99 mg/dL, and I have cholesterol of 262 mg/dL. My testosterone level is 191 ng/dL. I do not have a habit of smoking and drinking. Kindly suggest me a remedy.