Complex sentence: However, Metabolife 356 and other ephedra-containing supplements were linked to thousands of serious adverse events, including deaths, which caused the U.S. Food and Drug Administration (FDA) to ban the sale of ephedra-containing dietary supplements in 2004.
Split into simpler sentences: However, Metabolife 356 and other ephedra-containing supplements were linked to thousands of serious adverse events, including deaths. These deaths caused the U.S. Food and Drug Administration (FDA) to ban the sale of ephedra-containing dietary supplements in 2004.