### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My baby is 2 1/2 months old. He is pooping green since three weeks and the from past three days he is pooping green with small portion of black color stool and also he is fusing while taking feed both time while breastfeeding and bottle feeding. I even changed the nipple size but there is no effect. He is taking 400ml per day maximum. I went to see the doctor he prescribed him Phena syrup three times a day and also colicaid. 1-i wanted to know that phena syrup is used for what? Can I follow what doctor has prescribed? 2-can u plz help me to know what s wrong happening to my baby? I m soo much tensed not getting the satisfactory answer. Also suggest what should I do to make my baby should start taking feed as per his age. Three weeks it s a long time to see such a small baby in hunger. I will be very thankful to you..

### output:

Hi, I am Chat Doctor.  400 ml of top feed along with breastfeed, I think is sufficient for baby. How many times is he passing urine, what is frequency of urine, is baby active or dull, which formula feed or top feed is being given ? What is weight gain of baby during this period. If stools are more watery and large , changing to low lactose or zero lactose formula along with breastfeed may help. Pena Syrup contains promethium used for vomiting and irritability also. If you babies weight gain is appropriate (at least 500 gm in these 3 weeks) , passing urine adequately, no large and watery stools, you can be assured there is no big issue. Otherwise he needs a proper evaluation to pinpoint cause for same. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questionsTake care.