@jamesduaiswamy, Welcome to Connect. I want to wish you belated Happy 4th Transplant Anniversary! I hope that you were able to do a little something special to commemorate the event.
I used to depend on lemon juice for flavor before my transplant when I had no sense of taste. Now, after 13+ beautiful years with m y transplant, I still enjoy a twist of lemon on foods, or lemon in my water or tea. I am extremely careful when dining out to ask for NO lemon because of possible germs from handling. I do enjoy lemonade in the summertime, however I have to be careful because too much lemonade makes me itch. So my mantra is moderation.

As for your question about lemon juice, I have not located any reference to specific benefits for a post liver transplant patient. I did see many lists of possible benefits that included: acne, hair care. potential for anticancer effects, antibacterial, weigh loss, managing cholesterol, lowering blood pressure, household cleaner, and insect repellant. there were two, that I saw that could possible relate to your question(?). , -prevention of kidney stones and a Hepatoprotective Effect that claimed that lemon juice can help protect the liver from the damage caused by chronic alcohol consumption. (BioMed Research International 2017 issue, the flavonoids in it aid in detoxing harmful metals from the blood)

James, I was not successful to locate resources to share here. Do you have a particular reason for opinions about lemon juice? What have you read about lemon juice for post liver transplant patients?