WASHINGTON - President Biden touted the potential cost savings of Medicare’s first-ever price negotiations for widely used prescription drugs on Tuesday as he struggles to convince Americans that he’s improved their lives as he runs for reelection.

The drugs include the blood thinner Eliquis, diabetes treatment Jardiance and eight other medications. The negotiation process was authorized under the Inflation Reduction Act, which Biden signed last year, capping decades of debate over whether the federal government should be allowed to haggle with pharmaceutical companies.

Any lower prices won’t take effect for three years, and the path forward could be further complicated by litigation from drugmakers and heavy criticism from Republicans.

But the effort is a centerpiece of Biden’s reelection pitch as the Democrat tries to show Americans he’s deserving of a second term because of the work he’s doing to lower costs while the country is struggling with inflation. The drug negotiations, like many of President Biden’s biggest policy moves, will take time to play out, and his challenge is to persuade the public to be patient.

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“For all of you out there, I get it, and millions of Americans get it,” President Biden said at the White House. “I promise you. I’m going to have your back and I’ll never stop fighting for you on this issue.”

He noted that he got “no help from the other team” — meaning Republicans — when it came to lowering prescription costs.

The drugs on the list announced Tuesday accounted for $3.4 billion in out-of-pocket costs for Medicare patients last year.

The Medicare program paid more than $50 billion for the drugs between June 1, 2022, and May 31, according to the Centers for Medicare and Medicaid Services, or CMS.

That includes more than $16 billion on Eliquis, a total that does not count discounts or rebates that are already negotiated for the drug. The drug from Pfizer and Bristol-Myers Squibb treats blood clots in the legs and lungs and reduces the risk of stroke in people with an irregular heartbeat called atrial fibrillation.

The diabetes treatments Jardiance from Eli Lilly and Co. and Boehringer Ingelheim and Januvia from Merck made the list. It also included Amgen’s autoimmune disease treatment Enbrel and Entresto from Novartis, which is used to treat heart failure.

Other drugs on the list include AstraZeneca’s diabetes and heart failure treatment Farxiga and three drugs from Johnson & Johnson: the blood thinner Xarelto, the blood cancer treatment Imbruvica and it’s biggest seller, Stelara, an IV treatment for psoriasis and other inflammatory disorders.

The list also includes several versions of Novo Nordisk’s Fiasp, a fast-acting insulin taken around meals.

The announcement Tuesday is another significant step toward taming drug pricing under the Inflation Reduction Act, which was signed by President Biden last year. The law also calls for a $2,000 annual cap on how much people with Medicare have to pay out of pocket for drugs starting in 2025.