I can understand your concern with your daughter having to be on an antidepressant. But, if she truly needs it, I think you would have more to worry about if she wasn't on it. I have never taken Zoloft, but I understand it to be a good medication. Keep the lines of communication open with your daughter and make sure she keeps her appointments with her doctor.
As far as L Lysine, I have used it before for cold sores. It is an amino acid and does work on the immune system. In my opinion, it would have no benefit for depression. On a forum like this, you have to take the information you want and leave the rest behind.
We are glad you have joined us and please know that we are here for you. I know nothing can be more upsetting than something that involves your child.
Epilepsy, severe adult onset asthma, allergies, GERD, depression, hypothyroidism