We all know this person – do not speak to them until they have had a cup of coffee or an energy drink. Hot chocolate just won't do the trick. They will not be nice. They will not be alert. Proceed ...

We’re a nation fuelled by caffeine. We drink about 100 million cups of tea a day, according to the UK Tea & Infusions Association; and, says the British Coffee Association, somewhere in the region of ...

Paraxanthine, a compound the body naturally produces when it breaks down caffeine, is starting to appear in energy drinks and ...

Medically reviewed by Patricia Mikula, PharmD Key Takeaways Paraxanthine is a metabolite of caffeine that may cause less ...

For most people, consuming some caffeine is harmless — but too much can be dangerous. Recent news coverage has raised questions about the amount of caffeine in some popular drinks and what consumers ...

Sometimes energy drinks have the opposite effect and lead to tiredness because you “crash.” Find out why drinks without sugar ...

Were you tossing and turning last night and cursing yourself for the iced caramel macchiato you drank in the late afternoon? Do you worry about the amount of caffeine in a Mountain Dew? Caffeine is ...

For instance, sugary coffee drinks can cause a spike in blood sugar followed by a sharp drop, which may leave someone feeling ...

A cup of coffee or tea in the morning or an afternoon caffeine pick-me-up is usually fine for most adults. But parents might want to take a closer look at caffeine and other ingredients in the drinks ...

Coffee typically contains more caffeine per cup than matcha, providing a quicker energy boost.

Dear Mayo Clinic: I love to drink coffee. I often have multiple cups a day. Recently, I was diagnosed with diabetes and high blood pressure. My doctor advised that I may want to cut back on my ...

Pre-workout supplements can support energy, strength, and endurance during exercise, but they also come with several ...