Caffeine in Chocolate Vs. Coffee

Caffeine is found in both chocolate and coffee. It is the most commonly used mood-altering drug in the world, says Johns Hopkins Bayview Medical Center.

Coffee

• U.S. adults get most of their caffeine from coffee--a source with high amounts, reports Johns Hopkins Bayview Medical Center. Six ounces of brewed coffee has about 60 more milligrams of caffeine than the same amount of brewed tea and 12 ounces of soda, and 90 milligrams more than 1.5 ounces of milk chocolate.

Chocolate

• Chocolate contains minimal amounts of caffeine when compared to the 100 milligrams found in only 6 ounces of brewed coffee. A 6-ounce glass of chocolate milk, 1.5 ounces of milk chocolate and a 6-ounce cup of cocoa all contain caffeine, but often less than 10 milligrams. Dark chocolate contains 30 milligrams per 1.5 ounces.

Comparing Brands

• Coffee contains much less caffeine if it's instant or decaffeinated, states Johns Hopkins Bayview Medical Center. Six ounces of instant coffee contain about 70 milligrams of caffeine. The same amount of decaffeinated contains a mere 4 milligrams. Nine chocolate Kisses bring 9 milligrams of caffeine, according to Hershey's, while seven Rolos give only 3 milligrams.

Usage

• Cocoa beans--processed into chocolate--and coffee beans--ground for coffee--are naturally-grown sources of caffeine. While caffeine affects everyone differently, it can cause a slight increase in blood pressure and alertness, says Johns Hopkins Bayview Medical Center.

Effects

• As with any drug, some become dependent upon caffeine, says Johns Hopkins Bayview Medical Center. Withdraw symptoms include fatigue, headaches and irritability. High consumption can cause nervousness, upset stomach and anxiety.