U.S. health officials say Merck’s experimental COVID-19 pill is effective but they raised questions about its safety during pregnancy. The Food and Drug Administration posted its review Friday ahead of a public meeting next week where outside experts will debate the drug’s benefits and risks. If FDA authorizes the drug it would be the first pill for U.S. patients infected with the virus. All FDA-authorized drugs currently used against coronavirus require an IV or injection. The FDA will ask its experts whether the drug’s benefits outweigh its risks for various patient groups, including pregnant women.