With cold and flu season upon us, more people are looking for ways to stay healthy.

Elderberry is a holistic approach that is gaining attention.

"It's a tiny little berry, not even the size of a blueberry. It's like a tenth of a blueberry," Jackie Gray said. "I personally like the European berries because it has a nice rich color and deep flavor."

Gray has been making elderberry syrup for her family for six years.

She uses ginger, cinnamon, honey and elderberries.

"I make it up and keep it in my refrigerator. We try to take it a few times a week to keep our immune systems boosted," she added.

The Food and Drug Administration has not approved elderberry syrup products, but that hasn't stopped the natural medicine from gaining popularity in the Tennessee Valley.

Some places even offer classes on how you can make it yourself.

"If you find it, buy a lot because it does sell out when it comes on the market!" Gray said.

Gray sells elderberry syrup through her business called Agraria.

You can also get it at The Spice and Tea Exchange in Chattanooga or The Elderberry Lady in North Carolina.

Crabtree Farms in Chattanooga holds classes on how you can make elderberry syrup yourself.