Yes, your liver definitely can recover from the effects of deadly mushroom poisoning. Once you've overcome the acute phase of deadly mushroom poisoning, the liver can fully regenerate. If you've eaten one of these poisonous mushrooms, you generally don't get sick until six to 12 hours later. Symptoms include severe abdominal cramps, vomiting and watery diarrhea. Signs of liver damage usually aren't immediately apparent, but generally start to show after 24 hours or more.
Kidney damage can appear even later.
Emergency medical treatment of amanita mushroom poisoning should include treatment with Silibinin, a water-soluble form of silymarin. Because of the danger of liver failure, patients with mushroom poisoning generally require observation in an intensive care unit. There aren't many dangerous mushrooms, but unfortunately, there are no general rules for spotting them or distinguishing them from their edible cousins. Your best bet for familiarizing yourself with the mushrooms in your area is to go into the field with experienced people who can help you learn. You also might want to take part in mushroom conferences.