The following are recommended:
Co Q 10 for removing toxic substances from the body.
Oregano oil for jaundice.
Milk thistle has been shown to rejuvenate, and repair the liver.
Other things to consider are removing the substance that may have caused it, alcohol, as well as many drugs, and amino acids, derived from protein, are hard on the liver.
Drink plenty of water to flush the liver.
If it is "fatty liver" as can be the case, even without alcohol, avoid bad fats, these are fats that remain solid at room temperature, such as margarine, and shortenings. The good fats are a better choice, such as coconut oil, olive oil, and walnut oil.
Switch to a diet of "live" foods. Eat them in their original form, as close as possible.
I hope this helps.