If you've never heard of Dublin Dr. Pepper, the news of its demise might have easily escaped you, and you might be confused how it differs from the Dr. Pepper that you can find in virtually every grocery store.

Dublin Dr. Pepper was a specialized brand that was made by a separate company in Dublin, Texas, with a license from the main Dr. Pepper corporation.

It was made with Imperial pure-cane sugar, instead of high fructose corn syrup and came in old-fashioned, 8-ounce bottles that have a nostalgic appeal for many.

But a lawsuit from the Dr. Pepper corporation has forced the Dublin company to stop making Dublin Dr. Pepper.

The news came as a big disappointment to its fans, including Marty Doepke, who owns Pops Soda Ranch in Arcadia, Oklahoma, just outside Oklahoma City.

"We were hoping it wouldn't go quite this far, but unfortunately it has and Dublin Dr. Pepper will be no more," he said.

Of the hundreds of soda flavors sold at Pops, Doepke says Dublin Dr. Pepper was the number-one seller.

The bottling plant in Dublin, Texas draws some 80,000 visitors per year, according to some accounts.

Under its franchise agreement with the Dr. Pepper corporation, it's been reported that Dublin Dr. Pepper was not supposed to distribute the brand beyond a 44-mile radius of Dublin.

The Dr. Pepper corporation reportedly has plans to create its own version of a pure-cane sugar flavored Dr. Pepper, but Doepke says it remains to be seen whether it can successfully copy the taste of Dublin Dr. Pepper.

"We don't know if , 'A', it will be the same recipe with the Imperial cane sugar like the Dublin Dr. Pepper was using for all these years.  Also we don't know if it will be bottled in the small, little 8-ounce glass bottles," he said.