A Washington D.C. pharmacy revealed on Wednesday that they deliver medications that treat “serious health problems” to members of Congress, including medications to treat Alzheimer’s disease.

Pharmacy owner, Dr. Mike Kim, said that he has “gotten used to” knowing highly sensitive information about some of the most powerful people in Washington, STAT reported.

“At first it’s cool, and then you realize, I’m filling some drugs that are for some pretty serious health problems as well. And these are the people that are running the country,” Kim said, listing treatments for conditions like diabetes and Alzheimer’s.

Kim expressed concern over some of the serious health problems that members of Congress have because the diseases could severely limit their ability to serve in their elected positions.

“It makes you kind of sit back and say, ‘Wow, they’re making the highest laws of the land and they might not even remember what happened yesterday.’”

The pharmacy, which fills up to 100 prescriptions per day for Congress, delivers the medications to the “secretive” Office of the Attending Physician — lawmakers only have to pay an annual fee of approximately $600 to use the office.

Sen. Bill Cassidy (R-LA) noted the importance of the office which he says allows members of Congress to be more productive as they don’t have to make long drives to see a physician if needed.

“If you have a vote and you can’t get home to your personal physician, you need to see somebody, and I’ll run over between votes and be able to keep my personal responsibilities going,” Cassidy said. “It’s a convenience that definitely allows us to be more productive.”