Went on zoloft (sertraline) about 5 weeks ago everything was fine i fainted staying tried laying down my pulse drops down to 40 can zoloft (sertraline) do that?

Zoloft (sertraline): Yes zoloft (sertraline) can cause bradycardia (slow heart rate) especially at higher doses

Zoloft (sertraline): researched medication and found no documentation of these sideeffects

Unlikely: At 52, I would need to investigate reasons for slow heart rate, need blood work, ekg, and holter monitor. Could be a heart block, medication reaction to other meds you may be on, and other causes. Needs evaluation asap, especially with fainting. Would not drive, or operate heavy machinery until evaluated.