It is generally safe to give Encorate syrup and Calday P syrup together if they have been prescribed by your paediatrician, as calcium supplements do not usually interfere with sodium valproate; in fact, calcium and vitamin D may be beneficial because long-term use of anti-seizure medicines like Encorate can sometimes affect bone health. Make sure you give both medicines in the correct dose and at the advised times, and continue regular follow-up with your doctor to monitor your baby's growth and response to treatment. If you notice any unusual symptoms such as excessive sleepiness, vomiting, poor feeding, or irritability, inform your doctor promptly.