Drugs is not as good as therapy. The person has to be able to cope with what is going on in his/her life, or else it'll keep relapsing whenever there are stressors. See a psychologist, most of them in Malaysia uses Cognitive Behavioral Therapy (CBT), which has been found to be the best in overcoming depression, more effective than medication. Don't see a psychiatrist, that person will just give your friend more medication.