It depends act,
if he/she have biological Mdd, he should take the medication. Mean he/she Lack of serotonin, so need medication that increase the serotonin. But if he/she just psychology Mdd, he can stop the medication after he not depress anymore and the dr will teach about psychological treatment.

All drug have side effect and suppose to be the Dr need to inform u about the side effect of the drug. Im working in medical field, and I had seen a lot of patient with Mdd. I have encountered pt with no serious problem at all but depress most of the day, feeling useless, had suicidal attempt and most other symptom of mdd. After medication he become well. What i want to mention is, if he is real mdd patient (lack of serotonin) he should replenish back his serotonin to normal. But if he just have problem, and feel depress and meet dr to relieve the depress mood, it is not right. Good dr will be able to distinguish real mdd and fake mdd.
Yes there is dr that want to take profit from others, but not all like that. not just dr but all others jobs also like that.
I have not seen yet the movie, but i will.

Sorry if i have grammar mistake.

Medical knowledge is a lot but i will learn it till the end of my life.
yes, most of the times its on prescribing the medication, but i had been taught to prescribe the medication only to those who truely needed the medication and not all. Luckily, in Malaysia, most of the drug is free from government clinic and hospital. But bare in mind all those medication is paid by all tax payer in Malaysia. The pharmaceutical company take this opportunity to make profit by it. I dont want to talk about those party that want profit. We cant stop them. In medical field esp in psychiatry, u can manage patient either phamacological or psychology ways. If u dont like taking medication coz of side effect or whatever the reason, u can meet psychology dr to learn way how to cope/against all those symptoms.