GRAND JUNCTION, Colo. -

A mix-up at two Grand Junction pharmacies had one man worried for his wife's health.

Their prescription bottles were filled with the wrong medication and now they're looking for answers.

Larry Wilkinson says he wants someone to admit they made a mistake, one that caused not just inconvenience but stress and health problems.

It was weeks before Wilkinson and his wife realized what was wrong;  they weren't taking the right insulin medication and had no idea.

"We didn't know the difference between one insulin and the other, we are not doctors or pharmacists, so we took it,” Wilkinson explained.  “My wife's sugar went up to four or five hundred.  She was getting problems."

The problem got so bad Wilkinson feared for wife's life.

Now, he’s trying to figure out what happened with the prescription.  It had recently been transferred from Wal-Mart to Walgreens.

A Wal-Mart spokesperson tells us the prescription was transferred directly from pharmacist to pharmacist by phone.

"If you ever played the game phone, you know that after a while errors are made,” Wilkinson said.  “We need to have system that prevents prescriptions being sent to another place wrong. Someone could die.”

We contacted Walgreens after hours and were told officials are looking into it and hope to have additional information soon.

Wilkinson wants to know which pharmacy is responsible.

"I would like them to man up to the mistake and I would also like some compensation for it because of the stress and the headaches it has caused," Wilkinson said.

While he waits for answers, Wilkinson is warning others.

He says, "Check your medicine."