Hi,
Noted the history about your 67 year old boyfriend having psychological problem and prescribed
Sertraline 25 increased to 50 mg which made him down, yourself was prescribed
Zoloft 20 years back for 6 months and you never had any recurrence of
depression.
The psychological and psychiatric evaluation is totally in the hands of the Doctor and hence there is a possible correct dosage for such disorders and hence can not be really questioned.
If you feel that the dose is more than required then I would advise to consult the Doctor who prescribed this medicine for alteration of medicine or dosages.
Also required is psychological support.
Change of the factors that caused depression.
Change of place and work can help further.
Your mental support can make wonders.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon