The Ebola drug given to two Americans and a Spanish priest has been sent to treat infected doctors in two West African countries, and the supply of the medicine is now exhausted, its manufacturer said.

Countries including Nigeria and Liberia had requested the drug, called ZMapp. Mapp Biopharmaceutical Inc., based in San Diego, said it has complied with every request for the drug that was authorized by legal and regulatory authorities. The drug was provided at no cost, according to Mapp.