{"id":"n_6bazqtwkpkcwoz5ckjra","seq":10880549,"kind":"article","title":"GLP-1s often contain untested additive combinations, study finds","url":"https://medicalxpress.com/news/2026-11-glp-1s-untested-additive-combinations.html","summary":"Use of GLP-1 receptor agonist medications (GLP-1s) has skyrocketed in recent years, and many people are using \"compounded\" GLP-1 products: medicines that include GLP-1s as well as other active substances, some of which are not regulated by the FDA. A new study found that compounded GLP-1s now make up a large majority of weight-loss medicines, commonly containing vitamin B12 analogs that have not been tested for safety in combination with GLP-1s.","published":"2026-11-13T21:00:01Z","seen":"2026-11-13T21:54:35Z","lang":"en","country":"IM","source":{"id":"kite-medicalxpress-com-b50135","name":"medicalxpress.com","domain":"medicalxpress.com"},"via":"kite-medicalxpress-com-b50135","topics":["medicine"],"image":"https://scx1.b-cdn.net/csz/news/tmb/2026/glp-1-medications.jpg","story":"st_xilpodnxzzlfylzlxlcq","category":"science-technology","category_p":0.36,"category2":"health","sentiment":"neutral","tone":-0.13,"political":0.03}