Q. Can my wife use Serrax-D while breastfeeding?

Hello doctor,

My wife is 27 years old. Her weight is 132 pounds and height is 5 feet 4 inches. She developed a wound on her left thigh a few days back. We ignored it at first. Later, the surrounding area started swelling. Now, the swelling has reached till the lymph nodes. We went to a gynecologist here. She told that lot of infection had developed. The doctor prescribed Taxim-O 200 (Cefixime) to be taken in the morning and night along with Metrogyl 400 (Metronidazole) three tablets a day and Serax-D (Serratiopeptidase and Diclofenac potassium) to be taken in the morning and night. My wife is currently breastfeeding our 5 months old baby. So, we asked the doctor whether those medications are safe during lactation. She told that it is fine. However, based on what I read on the internet the first two tablets are moderately safe during lactation and may not pose any significant risk to the baby, whereas the third one is contraindicated during lactation. As per the doctor, the third medicine is required for her cure and is safe to take. Can you let me know whether the medications are safe to take during lactation? Can my wife continue breastfeeding normally? Our baby does not take powder milk and was vomiting when we tried bottled milk in the past. We need your valuable inputs. My wife does not have any other medical conditions. Our baby was born underweight (4.85 pounds) and is currently 11.9 pounds. Other than the low weight, she is usually active.