Thank you for your query,
As your child developed seizures after DPT vaccination
and controlled with the treatment given by your doctor, you continue the syrups of phenytoin
a per your doctor advise.
For the next vaccine schedule you should inform to your doctor regarding the seizure after the DPT vaccination, so that the doctor will advise you for DT or acellular pertussis
containg vaccine DPaT in the place of DPT.
Hope I have answered your query.