Coke And Caffeine

Hey, does any one know how many miligrams of caffeine are in a 20oz. coke or diet coke? I drink a shitload of this stuff and I’m looking to see just how much caffeine im putting into my body. ~Trance~

I believe there are 35mg in a 12oz coke, so a 20oz should be around 58mg of caffeine.

23 milligrams per every 8 ounces.

Found this on the web.
According to the National Soft Drink Association, the following is the caffeine content in mgs per 12 oz can of soda:
Afri-Cola 100.0 (?)
Jolt 71.2
Sugar-Free Mr. Pibb 58.8
Mountain Dew 55.0 (no caffeine in Canada)
Diet Mountain Dew 55.0
Kick citrus 54 (36mg per 8oz can, caffeine from guarana)
Mello Yellow 52.8
Surge 51.0
Tab 46.8
Battery energy drink – 140mg/l = 46.7mg/can
Coca-Cola 45.6
Diet Cola 45.6
Shasta Cola 44.4
Shasta Cherry Cola 44.4
Shasta Diet Cola 44.4
Mr. Pibb 40.8
OK Soda 40.5
Dr. Pepper 39.6
Pepsi Cola 37.2
Aspen 36.0
Diet Pepsi 35.4
RC Cola 36.0
Diet RC 36.0
Diet Rite 36.0
Canada Dry Cola 30.0
Canada Dry Diet Cola 1.2
7 Up 0

Here is the address for the National Soft Drink Association website. It list the caffiene content for all the different sodas and teas.