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The ⁠Food and Drug ⁠Administration on Thursday proposed ​excluding the active ingredients in Novo Nordisk ‌

and Eli Lilly

’s blockbuster obesity and diabetes medications from the ⁠list ⁠of drugs that outsourcing facilities can use for ​compounding in bulk.

If that proposal is finalized, the exclusion would likely limit the mass compounding — or the making of custom, often cheaper alternatives — of those medicines ​unless they appear on the FDA’s ⁠drug shortage ⁠list. The agency said it will consider public comments, which can be submitted until late June, before making a final decision.