Are antidepressants safe for an 18 year old? i cut mself every day but mostly im ok but i feel terrible with depression bouts and crying .normal?

Depression & cutting: The right antideprssant would make all the difference in the world if you are as you say, cutting and crying. You need help. I recommend that you see both a psychiatrist and a psychologist or councillor. How you are feeling is not normal and there is help out there for you. Please call now and make an appointment with your doctor to get a referral. Don't wait, please.

Basically yes: They are as safe for an 18 year old as they would be for an adult of more advanced age. However, if you are cutting yourself every day this is NOT safe - there are a number of ways you can do yourself significant damage. For self-harm, the premier treatment is psychotherapy, and there are a few specific kinds for this: Dialectical Behavior Therapy & Mentalization-Based Therapy are two examples.

Consultation: I would arrange a consult with a psychiatrist to discuss your options. Every one is different. That said I find that people with mood disorders who get relief from cutting can experience a lot of help with the right therapy. One needs to carefully review the family history as well as your situation and clinical course to properly diagnose and safely manage your condition(s) . Best wishes.