Japan is facing a supply shortage of GLP-1 receptor antagonists for type 2 diabetes due to their off-label use as diet drugs, prompting the main manufacturers to restrict supplies and calls for their use only in officially approved indications.
Japan Faces GLP-1 Shortage As Off-Label Diet Use Surges
Grey Areas Between Regulations
Despite repeated warnings by regulatory authorities and physicians’ associations, the demand for easy diet aids is impacting the supply of GLP-1 receptor antagonists in Japan.

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