How Much Caffeine Is in a Can of Coke Compared to Coffee?

Caffeine stimulates the central nervous system, keeping you alert and energized. 

Caffeine used to be a naturally occurring component of cola drinks because soft drink makers (such as Coca-Cola) used kola nut extract to make the drink, and caffeine is naturally present in the kola nut. 

Coca-Cola later incorporated coca plant extracts into their drinks. Because none of these natural sources is employed anymore, it is only logical that fizzy sodas would incorporate caffeine to replace the kola nut's flavor. This is the justification given by soft drink producers. 

Caffeine was proposed to be removed from soft drinks by the FDA in 1980. Soft drink producers responded by saying that caffeine is added to the beverages to give them the desired flavor, which is not harmful to health.

There are roughly 60 plant species that contain caffeine; cocoa beans, kola nuts, and tea leaves are the most well-known. Caffeine is found in many popular soft drinks, as well as a variety of pharmaceutical preparations and over-the-counter drugs, such as analgesics, diet aids, and cold or flu cures. 

Most people have no problems with 400 mg of caffeine or 4 cups of coffee a day. If you are sensitive to caffeine, however, even small doses can cause insomnia (inability to sleep), a racing heart, anxiety, and restlessness. 

Caffeine consumption of more than 600 mg per day (equal to 4-7 cups of coffee) is considered excessive according to health and nutrition experts. Excessive caffeine intake (e.g., more than 4 cups of coffee per day) in the long term may cause:

• Anxiety
• Difficulty sleeping
• Ulcers
• Osteoporosis in postmenopausal women
• Irritability and headaches
• Dizziness and ringing in the ears
• Muscle tremor
• Weakness and fatigue
• Rapid heart rate and breathing rate
• Poor appetite, nausea, vomiting, and diarrhea
• Increased thirst
• Frequent urination
• Irregular heart rate or rhythm
• Low blood pressure with fainting
• Seizures, confusion, or delirium

Giving up caffeine after a long period of consumption can be difficult as the body adjusts. Withdrawal symptoms normally appear 12-24 hours and the effects may continue anywhere from 2-7 days or even longer. These symptoms may include:

• Headache
• Marked fatigue or drowsiness
• Nausea
• Anxiety or irritability
• Sweating
• Dysphoria or depressed mood
• Difficulty concentrating
• Flu-like symptoms (nausea, vomiting, or muscle pain or stiffness)

Scientific research suggests that withdrawal symptoms can occur from daily consumption of only 100 mg of caffeine, indicating that drinking 3 cans of soft beverages a day is enough to get addicted.

Caffeine is classified as both a food additive and a medication by the FDA. Because the amount of caffeine in different goods can vary greatly, read the label before consuming.