The agency’s decision to conceal drug names on inspection reports has prevented doctors, pharmacists and patients from knowing whether medications made overseas are tainted by manufacturing failures that could make them ineffective or unsafe.

Instead of sharing the names of the medications coming from the errant foreign factories, the FDA routinely blacked them out, keeping the information secret from the public. That decision prevented doctors, pharmacists and patients from knowing whether the drugs they counted on were tainted by manufacturing failures — and potentially ineffective or unsafe.

“Is there some quality issue? Is there a greater difference in potency than expected? Is there a contaminant? I don’t know,” said Dr. Donna Kirchoff, a pediatrician in Oregon who has spent hours trying to find out where certain drugs were made for patients reporting unexplained reactions.