For a while now, I have been having this strange whistling in my throat as well as this lumpy feeling in the bottom left of my neck. What could this be?

For any age group a balanced diet is a must. Most people try to look for alterantes for the source of protien which can be replaced by pulses or soya. Also try to add fruits to your diet as well. 

Hi, By serum keratin you mean serum creatinine. Right? And WBC of 16000 is definitely high and with all those symptoms say he would also have high grade fever. He needs to visit an internal medicine specialist and get tested for any renal disease. High creatinine means renal disease and since he....

there is no supplement. just make sure you eat healthy. and why have you not introduced weaning for your child yet? are you feeding your child any other food items?