Actually his vomiting and diahorrea maybe due to several reasons, it maybe because of worms, irregular deworming, it maybe because of parvo viral enteritis, irregular vaccination or not vaccinating your pet against it, it maybe due to gastric irritation that it may had ate something like foriegn objects, we should find the exact causative agent to cure the problem, so kindly explain in detail about vaccination and deworming history, his consistency and frequency of vomit and diahorrea, is he active or not, if you share the pictures of vomit and diahorrea, video of your pet activity, it will be easy for us to diagnose and cure the problem,
thank you.