There is an old Supreme Court case from the 1940s, which I remember from law school, called Direct Sales Co., in which a mail order pharmaceutical company sold tens of thousands of doses of morphine every month to a single doctor in a small town. The company was convicted of illegal distribution of narcotics, and the Court held that the quantity ordered was so obviously beyond anything a legitimate doctor could use that the company had to have known the pills were being diverted to illegal uses.
So if a woman want’s an abortion, government has to stay out of it. But to treat her pain from the abortion, anasthesia during the procedure, antibiotics to prevent infection after an abortion, anti-depressants from the emotional trauma of an abortion etc you need the FDA to approve the drugs, the DEA to control the distribution of the drugs, the states to ensure proper licensing of the drug dispensaries... ?