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 ...

A jolt of energy in a can sounds like a superpower. Crack it open, take a few sips, and suddenly everything feels sharper, faster, more manageable. That rush hits hard, and it works—until it doesn’t.

A doctor explained safe guidelines for limiting your daily consumption, whether you're drinking coffee, tea, energy drinks or ...

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 ...

Paraxanthine, a compound the body naturally produces when it breaks down caffeine, is starting to appear in energy drinks and even some coffee products as a potential caffeine alternative.

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

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 ...

A staggering 94% of Americans use caffeine, 64% of whom do so on a daily basis. It’s the energy enhancer people start their day with to get to work, the gym, or just life in general. If you’re not big ...

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 ...

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

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