President Donald Trump on Thursday night is unveiling his TrumpRx website in an event at the White House.

Trump will make the announcement at 7 p.m. ET alongside Centers for Medicare and Medicaid Services Administrator Dr. Mehmet Oz and National Design Studio Director Joe Gebbia.

White House press secretary Karoline Leavitt, at a press briefing earlier Thursday, called TrumpRx “a state-of-the-art website for American consumers to purchase low-cost prescription drugs.”

“This historic announcement will save millions of Americans their hard-earned money,” Leavitt said.

Trump first revealed his administration’s goal of launching the website back in September when he announced that Pfizer had agreed to lower its prices for prescription drugs offered through Medicaid.

He hailed it as part of his administration’s “most favored nation” push to pressure companies to charge U.S. patients the same rate as they do in other countries.

The administration also negotiated deals with Ely Lilly and Novo Nordisk to offer some of their weight loss drugs at a lower price through TrumpRx, the president announced in November.

The companies have since lowered prices on a voluntary basis before the launch.  

Dr. Oz recently told ABC News Chief White House Correspondent Mary Bruce the TrumpRx site will be a platform that will connect consumers to pharmaceutical websites so people can pay the lowest cash price without insurance. 

There are similar third-party companies, like Good RX, which try to help consumers find the cheapest prices for medication using a cash price or coupons. 

“We don’t sell the drugs,” Oz told Bruce. “This is a government website. We are allowing everybody transparency into what these drugs cost.”

Any company that sells the drugs can put their products on the website, “and you can go there and say, ‘You know, in my area, I can buy for that price,'” he said.

“And they can hit the button and buy from whoever selling it,” Oz added. 

President Trump last month released his “Great Healthcare Plan,” in which he called on Congress to codify the “most favored nation” initiative.

The plan also proposed sending money directly to Americans to buy health insurance and included calls to increase price transparency and hold insurance companies accountable — though it largely lacked specifics.

Polls show most Americans are concerned about health care costs.

A survey last month from KFF, a nonprofit health policy research organization, found two-thirds of U.S. adults worried about being able to afford health care for them and their family — outranking other expenses like gas and groceries. A majority of Americans, 56%, said they expect health care to become less affordable in the coming year.

The poll also found that two-thirds of Americans said Congress “did the wrong thing” by allowing enhanced Affordable Care Act tax credits to expire. Millions of Americans were expected to face increased premium costs as a result of the lapse.

ABC News’ Eric Strauss, Michelle Stoddart, Emily Chang and Isabella Murray contributed to this report.