How Long Does It Take for Caffeine to Take In and Wear Off? Find Out Here

4 hours ago 5

January 10, 2025 | 02:48 pm

Coffee illustration (pixabay.com)

TEMPO.CO, Jakarta - In today's fast-paced culture, people rely on caffeine more than you might think. That is why it is not uncommon to see workers lining up at nearby coffee shops at lunchtime. 

The question is, how long does it take for the caffeine to kick in? Much like any other operating system in our bodies, the after-effects of a boost actually depend on each individual. Let's take a look at what the experts say about caffeine consumption, as taken from Peloton the Output and Fortune Well

How Long Does it Take for Caffeine to Kick in? 

It has become common knowledge that consuming caffeine can alter our bodies in general including focus, mood, cognitive abilities, and even physical performance. Caffeine takes about 15 to 45 minutes to kick in, as per the Centers for Disease Control & Prevention. 

For a closer look, the effects of caffeine have ranging pace variations based on case-per-case circumstances. Citing from Peloton the Output, France Largeman-Roth, RDN, a Dobbs Ferry, New York-based registered dietitian nutritionist, adds that the after-effect hits its peak performance anywhere from 45-60 minutes after consumption. 

According to Dr. Marie-Pierre St-Onge, an associate professor of nutritional medicine at Columbia University Irving Medical Center, some people may need over eight hours to process caffeine. That is why it is always a good idea to time your caffeine intake according to your personal schedule. 

How Long Does it Take for Caffeine to Wear Off? 

According to Peloton the Output, if you sip a 100-milligram cup of coffee at 7 a.m., you will still have around 50 milligrams of caffeine in your system by about 9:30 a.m. until noon. In other words, it takes about two and a half to five hours for the half-life of caffeine to eventually wear off in your body. It is always advisable to limit your caffeine intake to no later than 2 p.m. or within six to eight hours of your bedtime to have a good night’s rest. 

How Much Caffeine is OK?

For most healthy adults without pre-existing conditions, it is typically safe to consume up to 400 milligrams of caffeine consumption per day. For comparison, here are the most popular sources of caffeine and how much each weighs, according to the Food & Drug Administration (FDA):

  • 8-ounce cup of coffee: 80-100 milligrams

  • 12-ounce can of soda: 30-40 milligrams

  • 8-ounce cup of green or black tea: 30-50 milligrams

  • 8-ounce energy drink: 40-250 milligrams

  • 1 ounce of chocolate: 12 milligrams 

While caffeine affects everyone differently, doctors and nutritionists do not recommend caffeine consumption for people with the following conditions:

  • People with heart arrhythmias

  • People who are pregnant or breastfeeding

  • People with high blood pressure 

  • People with migraines

  • People with gastroesophageal reflux disease 

Caffeine Alternatives 

Avoiding caffeine might be hard for some people who need an extra boost to function. However, there are many tips to follow that may help you get through the slump just fine. Some of them are: 

  • Take a 30-minute power nap

  • Take a walk outside

  • Take a cold shower

  • Drink lemon water or a smoothie 

  • Take 10-minute breaks between work sessions of up to 90 minutes

WebMD recommends consuming foods that contain some protein or healthy fats to avoid a sugar crash. They added that certain scents, such as lemon, peppermint, and eucalyptus, can also help you stay focused and feel more awake.  

Understanding how long it takes for caffeine to kick in is crucial to making informed decisions about your daily consumption. Tailoring your habits to your body's unique needs can lead to a healthier and more balanced approach to productivity. To start the year off right, check out some healthy habits that will transform your life here

Editor’s Choice: 8 Quiet Cafes in Singapore to Escape the Noise

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