Victoria Toline needed nine months to taper off Zoloft. “I had to drop out of school,” she said. “My life’s been on hold.”Credit...Ruth Fremson/The New York Times Victoria Toline would hunch over the kitchen table, steady her hands and draw a bead of liquid from a vial with a small dropper. It was a delicate operation that had become a daily routine — extracting ever tinier doses of the antidepres