Some people can’t enjoy caffeine without experiencing negative side effects. Learn about caffeine sensitivity risk factors, plus buzzy alternatives to consider.

Molina, MDSymptoms of a caffeine allergy can include itchy skin, swelling, and difficulty breathing.Antihistamines and epinephrine can help treat a caffeine allergy.Coffee, black tea, and cocoa ...

Dear Doctors: Have you ever encountered anyone who barely seems to metabolize caffeine at all? I am a 64-year-old woman, and over the last eight years, I have become increasingly unable to tolerate ...

DEAR DOCTORS: Have you ever encountered anyone who barely seems to metabolize caffeine at all? I am a 64-year-old woman, and over the last eight years, I have become increasingly unable to tolerate ...

DEAR DOCTORS: Have you ever encountered anyone who barely seems to metabolize caffeine at all? I am a 64-year-old woman, and over the last eight years, I have become increasingly unable to tolerate ...

Drinking coffee too late can disrupt sleep. The best time to drink coffee varies based on genetics and caffeine sensitivity.

Dear Doctors: Have you ever encountered anyone who barely seems to metabolize caffeine at all? I am a 64-year-old woman, and over the last eight years, I have become increasingly unable to tolerate ...

Going cold-turkey may cause some daily coffee drinkers to experience a lingering headache that could last for two to three days.