Methyl donors such as B vitamins choline and betaine are what your liver uses to remove estrogen from your body even “estrogen blockers” will not remove estrogen from your body. (The only estrogen blockers that permanently disable estrogen are aromatase inhibitors i do not recommend them because i have seen that they can also mess up peoples sex drives and some also block dht. Using SERMS such as nolvadex or clomid should be safe.) Even if your liver function is good supplementing a B complex and choline will help remove excess estrogen from your body in a 100 percent safe manner as long as you dont overdose on anything. If you have elevated liver enzymes you need to supplement methyl donors to heal your liver and lower excess estrogen and other waste that your body is trying to get rid of.
Christopher walker talks a lot about how important choline and methylation is, i know he is trying to sell people stuff but his information is always checks out in my experience.