Is it safe to take benadryl (diphenhydramine) while on zoloft?

OK but Caution: Benadryl (diphenhydramine) together with sertraline may increase side effects such as dizziness, drowsiness, & difficulty concentrating. Some people may also experience some impairment in thinking & judgment. You should avoid/limit use of alcohol while being treated with these medications. Avoid driving or operating hazardous machinery until you know how the medications affect you. Max Benadryl (diphenhydramine) dose is 300mg/d.