Sue Ogrocki, Associated Press
In this Oct. 9, 2014 file photo, Department of Corrections officials are pictured in the witness room at right, outside the newly renovated death chamber at the Oklahoma State Penitentiary in McAlester, Okla.

SAN DIEGO — A national pharmacists' group has adopted a policy discouraging its members from providing death-penalty drugs.

The American Pharmacists Association's new policy could make it tough for death penalty states, like Texas, that have been looking at made-to-order execution drugs from compounding pharmacies as the answer to an execution drug shortage.

The association's governing body approved the policy Monday at a meeting in San Diego.

The group lacks the legal authority to bar compounding pharmacies from selling the drugs. But its policies set the ethical standards followed by pharmacists, just as the American Medical Association does for doctors.

Prison departments have had to buy made-to-order execution drugs from compounding pharmacies in recent years. That's because the pharmaceutical companies they used to buy from have refused to sell lethal-injection drugs after coming under pressure from death penalty opponents.