Thanks for writing in.
Continue him crocin
drops and nasoclear drops for nasal blockade.
Maxtra is not an antibiotic. It contains drugs which fall in category of anti-histaminics. Those drugs help to dry out nasal secretions and help to relieve cold
Give him steam inhalations which also helps.
I hope I have cleared your doubt. In case of further clarification, feel free to revert back.