Sen. Chuck Grassley (R-Iowa), the oldest senator in the upper chamber, has been hospitalized after suffering from an infection, his office said Tuesday. 

Grassley, 90, is expected to make a full recovery after receiving treatments for the infection at a Washington, DC-area hospital, a spokesperson for the Iowa Republican told The Post.

The eight-term senator is “receiving antibiotic infusions at an area hospital to treat an infection,” his office said in a statement. 

“He is in good spirits and will return to work as soon as possible following doctors’ orders,” the statement concluded. 

Grassley, who served a six-year stint in the House of Representatives prior to his 1980 election to the Senate, is the longest-serving Republican in congressional history. 

Several Hawkeye State politicians wished Grassley a speedy recovery.

“Here’s to a quick recovery @ChuckGrassley!” Republican Iowa Gov. Kim Reynolds wrote on X.

“Senator @ChuckGrassley, I am praying for a rapid recovery peppered with documentaries and DQ,” Rep. Mariannette Miller-Meeks (R-Iowa) tweeted, referencing Grassley’s fondness for Dairy Queen and History Channel documentaries.