Thanks for the further information on Maximus.
I'm glad to hear that he isn't running a fever.
Give the acid reducers and food fast, then bland diet a try and see how he comes along. If he continues to vomit then you know he needs a veterinary visit.
I've made this an information request as I believe this is follow up information from your original question, but I think I have all the information I need.
Keep in touch and let me know if things change or if you have any further questions.