Looking for a movie late 80s begin90s

Hello,

I am looking for a movie from the 80s or 90s. It is about a space capsule which crashes on earth. A man with his son and dog see the space capsule crashing. The go to the space capsule. The is a gas leaking captured from space which the man, boy and dog breath in. After the breath this gas the van self heal. And the man can run without getting tired. In the movie the want to stop a Vilain. The Vilain shoots the main character in the stomach with a laser. He then instantly regenerate the whole mad in his stomach

I-Man