thank you for using health care magic.
Zoloft is very good anti depressant
drugs that has very less drug interaction
Your extreme tiredness may be due to
1) Opiate withdrawal
2) as a symptom of depression
3) as a side effect of Zoloft
4) Vitamin B12 or Vitamin D Deficiency
You should consult a psychiatrist
for detailed evaluation and proper case management.
the treatment depends on the cause of treatment.
For seasonal affective disorder, many times tricyclic anti depressants like clomipramine
are very good.
I hope you will be fine soon.
Dr Nehal Shah