Weak Urine Flow. If i take alfoo?

I was having weak urine flow so I consulted a urologist at his clinic. He told me to do UROWFLOWMETRY, Ultrasound abdomen,RGU XRAY, URINE CULTURE, URINE ROUTINE. all the test were normal but in the ultrasound they said my prostate is mildly enlarged 23 ml. Doctor advised me to take desperzyme tab, urisol, respilax 100 and alfoo. My ultrasound was not done properly at the hospital. My age is only 24. I didn't believe my prostate is enlarged. So I did ultrasound again 2 times at two different hospitals. In both the reports they said my prostate size is normal. I want to show the reports to the doctor but he is unavailable till Jan 6. I searched in internet and got to know that alfoo tab is for prostate enlargement. I am confused whether I should keep taking alfoo tab Since now I know my prostate is normal in size. Will there be any harmful effects if I take alfoo ? Pls anyone help me