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GRAND RAPIDS (WZZM) -- A popular pain reliever is back on the market.

Novartis voluntarily recalled Excedrin back in January because some packages contained mixed, chipped or broken pills.

Mike Koelzer, owner of Kay Pharmacy in Grand Rapids, says Novartis was having trouble with its entire line of over-the-counter drugs, but Excedrin is one of its most popular products.

"There are stories of this being sold on the street like an illegal drug, for like a dollar a tablet over the Internet, too," says Koelzer. "It was a big deal that this was missing."

Koelzer says generic headache medicines were always available during the voluntary recall. Now that Excedrin is back, Koelzer says he can't keep it on store shelves.

"People want them fast to get them into their medicine cabinet so they have a supply back-up," he says. "Then they buy probably three or four of them so this doesn't happen again."

Koelzer says it could be months before his shelves will stay stocked on a regular basis.