It is not safe to give Moxikind-CV Forte Dry Syrup without a paediatrician?s prescription. A chest cold is typically viral, and antibiotics like Moxikind-CV will not cure viral infections; instead, they can cause unnecessary side effects like diarrhoea or diaper rash. Antibiotics should only be administered if a doctor diagnoses a secondary bacterial infection. If prescribed, the exact dosage depends on the specific strength of the syrup and the severity of the infection, calculated precisely based on your baby?s 11 kg weight. Please consult a paediatrician for a physical examination and an appropriate, safe treatment plan.