Does trazodone 50mg and Paxil CR 37.5 mg ok to take?

Hi, orlo!
This is the report from Drug.com's Interaction Checker:
https://www.drugs.com/interactions-check.php?drug_list=1800-1156,2228-0
This link is about serotonin syndrome, a rare but potential side effect:
https://www.drugs.com/cg/serotonin-syndrome.html
If your doctor prescribed both medications they are likely aware of this side effect and feel that the benefit outweighs the risk to you.
If you have concerns you can ask your doctor.
Best regards,
Wildcat