A Massachusetts man is accused of misleading a woman he was dating into taking medication to end her pregnancy, the Middlesex County District Attorney said.Authorities say Robert Kawada, 43, of Brookline, was charged with poisoning, assault and battery with a dangerous weapon on a pregnant person and assault and battery on a household or family member.According to authorities, Kawada and the victim were dating and the victim became pregnant.Middlesex District Attorney Marian Ryan and Watertown Chief of Police Justin Hanrahan say Kawada secretly gave the victim medication under the guise that he was giving her iron pills and vitamins. Authorities said the medication was actually intended to end the pregnancy.After the victim had been given the pills, one of which is believed to be misoprostol, the victim suffered a miscarriage, the Middlesex DA’s office said in a news release.The National Institute of Health says misoprostol is approved by the U.S. Food and Drug Administration for the prevention and treatment of gastric ulcers induced by nonsteroidal anti-inflammatory drugs in patients who are taking NSAIDs and are at high risk for ulceration.However, misoprostol is also used off-label for a variety of indications of obstetrics and gynecology, including medication abortion. “The combination of misoprostol and mifepristone is FDA-approved for medical abortions,” the NIH website says. “In instances where mifepristone is unavailable, a misoprostol-only regimen is the recommended alternative.” Kawada was arrested by Watertown police on Friday and was scheduled to be arraigned in Waltham District Court on Tuesday.The Middlesex District Attorney’s Office and Watertown Police were investigating.