The FDA resolved the shortage of Eli Lilly's tirzepatide, but may revisit allowing compounding pharmacies to make copies, sparking legal and industry pushback.

There’s a war brewing over blockbuster weight loss medications — and patients are now getting caught in the crossfire.

WeightWatchers will begin selling compounded alternatives to certain weight-loss drugs that are experiencing shortages. Why it matters: Federal law allows companies to sell compounded versions of drugs that are on the FDA's shortages list — which has led to a surge of copycats to the newly popular class of GLP-1 injections.

The U.S. Food and Drug Administration on Friday agreed to reconsider a decision it made last month to bar drug compounders from selling their own versions of Eli Lilly's blockbuster weight loss and diabetes drugs.

The U.S. Food and Drug Administration (FDA) has agreed to reconsider its decision to remove tirzepatide, the active ingredient of Eli Lilly's (NYSE:LLY) diabetes therapy Mounjaro and weight loss therapy Zepbound,