The Danish drugmaker's move follows a similar announcement by rival Eli Lilly earlier this month. More than 8 million Americans use insulin, according to the American Diabetes Association.
Some polls show Trump's support slipping among seniors. His new plan will help diabetic seniors limit insulin costs to $35 per month, starting next year.
Insurers have begun easing restrictions on refills of some prescription drugs, in light of coronavirus. Still, co-pays for stocking up on that bigger supply can be prohibitive, say consumer advocates.
Type 1 diabetes can be well managed with insulin if blood sugar is consistently monitored. But insurance rules can make it hard for patients to get the medical supplies their doctors say they need.
A new law, signed by the governor earlier this week, is aimed at helping diabetics afford the lifesaving medication.
As congressional lawmakers continue to turn up the heat on drugmakers, insurers and middlemen over the price of many medicines, one player says it will limit patients' share of the cost of insulin.
The Indianapolis-based drugmaker said Monday that it would offer a generic version of Humalog insulin, one of its best-selling medicines. The move could help blunt criticism about high prices.
Faced with high U.S. prices for prescription drugs, some Americans cross the border to buy insulin pens and other meds. At least 1 insurer reimburses flights to the border to make such purchases easy.