[1] Dr. Brown's sodas are kosher, are often sold in Jewish delicatessens and restaurants, and can also be found in specialty grocers and grocery stores that specialize in American food in Israel.

[2] The flavor, derived from celery seed extract, is reminiscent of ginger ale but with a pronounced celery flavor that is more pungent or peppery than ginger ale.

Dr. Brown's Celery Tonic was, according to the company, first produced in 1868 in Brooklyn, New York.

[3] The Food and Drug Administration objected to its being called a "tonic", and in the 1900s the name was changed to Dr. Brown's Cel-Ray (soda).

Dr. Brown's briefly produced a diet Cel-Ray, but it was discontinued due to low sales.