Diagnosed with depression 1 year ago. sometimes such a low mood i can't function but sometimes i'm really happy, feels like adrenaline rush. no meds?

Not sure : If you are asking if you needs to have this managed by medication. Regardless it would be best to see a doctor to rule out any medical cause and if that is ruled out, then a referral to a psychiatrist or therapist may be necessary. Take care.

Bipolar: Disorder is often initially diagnosed as depression. See your doctor to discuss further.