Q:

How long does it take for caffeine to kick in?

A:

Quick Answer

The effects of caffeine start within 10 minutes after it is consumed, according to ScienceDaily. However, caffeine requires 45 minutes to reach its maximum concentration in the blood.

Continue Reading
How long does it take for caffeine to kick in?
Credit: Tom Merton OJO Images Getty Images

Full Answer

Caffeine is an immediate stimulant as its effects can be felt within 10 minutes of consumption. According to ScienceDaily, this was reported in a study conducted by the researchers at the University of Barcelona in Spain. However, this research study also reported that caffeine attains its maximum concentration in the blood 45 minutes after consumption.

In previous studies, it was reported that people experienced increased alertness 30 to 45 minutes after consuming beverages containing caffeine. Nearly 90 percent of adults consume caffeine daily in North America, according to Villanova University.

Learn more about Medications & Vitamins

Related Questions

  • Q:

    Does Aleve contain caffeine?

    A:

    According to the Aleve website, Aleve does not contain any caffeine. Aleve does not contain acetaminophen, ibuprofen or aspirin either. Aleve should not be mixed with any other pain reliever unless an individual is explicitly told to do so by a medical professional.

    Full Answer >
    Filed Under:
  • Q:

    What are some Stimerex ES reviews?

    A:

    According to the manufacturer, Hi-Tech Pharmaceuticals, Stimerex ES is a highly effective weight loss aid that contains a combination of ingredients, including ephedra, synephrine, green tea extract, theobromine and caffeine. However, as of 2014, there are no available scientific studies proving the company's claims. Further, the ingredients are dangerous according to the National Institutes of Health.

    Full Answer >
    Filed Under:
  • Q:

    Does Advil contain caffeine?

    A:

    According to the makers of Advil, none of the varieties of the pill contain caffeine. The active ingredient in Advil is ibuprofen, which can be used to lessen fevers, reduce inflammation and relieve pain.

    Full Answer >
    Filed Under:
  • Q:

    What are the main ingredients in Excedrin?

    A:

    The main ingredients in Excedrin are acetaminophen, aspirin and caffeine, states Drugs.com. Both acetaminophen and aspirin relieve pain and fever, and aspirin also decreases inflammation. Caffeine stimulates the central nervous system and improves blood flow by relaxing the smooth muscle in blood vessels.

    Full Answer >
    Filed Under:

Explore