Verapamil, a Blood Pressure Drug, Shows Promise in Preserving Insulin-Producing Cells for Type 1 Diabetes
Verapamil, a calcium channel blocker traditionally used for blood pressure and heart rhythm issues, is being investigated for its potential in treating Type 1 diabetes. Previous small trials in 2018 involving adults with newly diagnosed Type 1 diabetes and a larger trial in children (CLVer) indicated that Verapamil helped preserve insulin-producing β-cells. However, the largest adult trial to date, Ver-A-T1D, which included 136 participants, narrowly missed its primary objective in 2025. This was partly attributed to the placebo group experiencing a slower-than-anticipated decline in β-cell function. Despite this, further trials are currently underway, including WAVE T1D, which is examining Verapamil's efficacy following immune therapy in young individuals with new-onset Type 1 diabetes. The drug's mechanism in diabetes is believed to involve lowering TXNIP, a gene that contributes to glucose-induced stress and β-cell death, and increasing CaMK4, which supports β-cell survival.