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CHARLOTTE -- Some convenience store customers and pharmacists are concerned about the sale of brownies that are said to be a relaxation tool and sleep aid. These brownies may contain as much as two doses of sleep aids such as melatonin and valerian root which cause fatigue and drowsiness.

"It's not an illegal product. If they want to sell it, they can sell it, but it needs to be regulated. It needs to be kept behind the counter and you need to be of-age to purchase it," Sally McCoy. "Don't put it out there for just anybody to grab it and buy it."

Pharmacist Josh Rimany said the reason why the brownies go unregulated is because they're not considered a food.

"The FDA doesn't even have any regulatory components of these because they're not approved as food additives, they're approved as over-the-counter supplements," he said.

A spokesperson for Sippin Syrup, one company making these types of brownies, says it is a very safe product and they have not received any complaints from customers, and that it's considered a dietary supplement, not a food.