A generic blood pressure medicine healed beta cells, curing diabetes in mice. Scientists are now recruiting for a human study to see if it works in people. It might heal both Type 1 and Type 2. The drug is called verapamil. It costs $4 a month at Walmart. It has been used for high blood pressure, migraine headaches, and irregular heartbeats for decades, but it turns out to have a side effect. It lowers levels of a protein called TXNIP.