Today, my 2 months old daschund pup is vomiting excessively.

I have been giving him controlled diet & he was healthy till yesterday.

But, now, he refuses to drink water. His nose is dry. He has diaherrea & vomitting. I'm worried.

Can someone please tell me is this curable? What I be doing? This is y first pet & I know nothing about dogs.

Could be parvo. The sooner you get him to a vet, the more likely he will survive.