A popular dietary supplement is being pulled from the market after the U.S. Food and Drug Administration (FDA) warned that it could contain hidden ingredients linked to “severe or fatal physiological effects" and urged consumers to stop using it. What The Supplement Is The recall affects Better Weather-branded “FixElixir,” a small 15 ml bottle of dietary supplement sold nationwide in the U.S., mainly online.  It was marketed as a quick, convenient ‘fix’ for wellness or performance, and came in at least two versions: The original and a “Berry” flavor. Why It’s Being Recalled The issue comes down to what was found inside the product—and what wasn’t listed on the label.…