my self Satish Vadher my son name is dhyey 2 years 4 month his weight not up by down 11.500 kg you give me suggestions for multivitamin syrp

A. syp Zincovit 5ml od See rest more you can try to give a healthy diet and see a doctor there fir more adviceSee try to consult to a good pediatrician there who will do a full check up and tell the diagnosis