S.A.
Hi H.,
Maybe this will help. I have had to squirt the medicine in my son's mouth when he was little using this method because like you son, it was too nasty. Once the medicine hits the taste buds...it is alll over and that causes the gag reaction.
But try this...when you open his mouth, place the syringe between his gums and the inside of his jaw. Hold his little cheeks as if you are puckering his lips, insert the syringe along the side of his gums and cheeks squirting where the lymph nodes are. That way it goes down without him tasting it and it dosen't make him gag. I hope my explanation was pretty clear...seems I could describe it better by showing it. I had the same problems with my son and a doctor told me this method.
Hope this was helpful.