I really love Dr Pepper its my favorite drink, Some might even call me an expert on it, What would you like to know about Dr Pepper? 
When was Dr. Pepper created?
Dr Pepper was madein the 1880s by pharmacist by the name of Charles Alderton in Waco, Texas and the soda was first served around 1885.
Who bottles Dr. Pepper?
I'm not sure, but The U.S. Patent Office says that December 1, 1885 was the first time Dr Pepper was served. But it doesnt mention who bottles it. 
What's in Dr. Pepper?
Well it basically consists of high fructose corn syrup, Its also in Diet Dr Pepper, they also have additional flavors that were first introduced in the 2000s.