ptsd: more meds or service dog

hey, I have been through a lot in the last few years in terms of treatment for mental illnesses. I've been experiencing a lot of intense flashbacks, nightmares, and General anxiety/depression/ suicidal ideation. I'm probably going to be put on an antipsychotic soon, but I would rather not. I'm an athlete, and would prefer to not have more side effects that interfere with training! my other option is getting a service dog t o help me deal with my symptoms! What should I do?