Medical abortions done at home with online help and pills sent in the mail appear to be just as safe as those done at a clinic, according to a new study.
The research tracked the outcomes of 1000 women in Ireland and Northern Ireland, who used a website run by a group called Women on Web to get abortion pills.
The Netherlands-based nonprofit provides advice and pills to women seeking an early abortion in more than 140 countries where access to abortion is restricted.
Ireland and Northern Ireland have some of the world's strictest laws, often only granting approval when a woman's life is at risk.
To use the service, women complete an online form, which is reviewed by a doctor.
They are sent two drugs in the mail - mifepristone and misoprostol - and given instructions on how to take the pills, which have been used since 1988 to induce early abortions.
They are later asked to fill out an evaluation form.
About 95 per cent of the women in the study reported successfully ending their pregnancy; nearly all were less than nine weeks pregnant.
The researchers said less than one per cent reported side effects like nausea and fever, comparable to the rates for women who seek medical abortions at clinics where abortion is legal.
Seven women needed a blood transfusion and 26 received antibiotics.
No deaths were reported.
Follow-up information was missing for about one-third of the 1500 women who were sent pills over three years, so some complications may have been missed.
The study was published online on Tuesday in the British journal, The BMJ.
Women on Web provided the data and the patient feedback for the study; two of the authors are affiliated with the group.
In the past decade, the group has helped about 50,000 women have a medical abortion at home.
"We now have evidence that self-sourced medical abortion that's entirely outside the formal health care system can be safe and effective," said Dr Abigail Aiken, an assistant professor at the University of Texas at Austin who led the study.
"Women are very capable of managing their own abortions and they're able to determine themselves when they need to seek medical attention."
Other experts agreed the study shows how women might be able to safely sidestep restrictive abortion laws.
"This undermines the efficacy of these laws and leaves them unenforceable," said Bernard Dickens, a professor emeritus of health law and policy at the University of Toronto, who co-wrote an accompanying commentary.
He cited a number of legal loopholes that would make it difficult to prosecute people helping women have an abortion at home.
