It's easy to get answers about health and nutrition! Just send your question by email to and Dr. Harlan will respond to selected questions of general interest. Answers will be posted in the Ask Dr. Gourmet newsletter (sign up now!) and archived in the Ask Dr. Gourmet section of the website.

Please note that the Ask Dr. Gourmet feature is restricted to questions regarding food and nutrition. Due to the many questions we receive, not all questions may be answered. For more specific questions about your individual health, please contact your doctor. About Timothy S. Harlan, MD, FACP | Terms of Use | Privacy Policy



Ask Dr. Gourmet

How much Carbon Dioxide is in soda?

How much CO2 is in Pepsi, 7-Up and Mountain Dew?

Dr. Gourmet Says...

glass of soda

I love this question. Using a 500 mL bottle of Coca-Cola, I poured it into a 1 quart Pyrex measuring cup. My trusty stick blender with the whisk attachment provided gentle agitation to release as much of the carbon dioxide as possible. I then let the Coke sit for 12 hours, stirring it occasionally.

I used my very unscientific electronic kitchen scale. The result was a loss of 10 grams by weight. After the initial agitation, 6 grams of weight was lost. Now, I don't have the most scientific equipment, but that seems a fair amount of CO2 -- about the amount in the cartridges that I use for inflating the tires on my bicycle (they have 12 grams of CO2).

Thanks for writing.

Timothy S. Harlan, MD, FACP
Dr. Gourmet