One study looked at caffeine consumers who were used to 100 mg, 300 mg, or 600 mg of caffeine a day. The number of symptoms you get and how severe these are can be worse if you’re used to having a lot of caffeine each day.

“Even short periods of caffeine deprivation, equivalent in length to missing regular morning coffee, can produce noticeable unpleasant caffeine withdrawal symptoms in habitual coffee drinkers.” For those who took the placebo, even in that short time, withdrawal symptoms were present. One study looked at participants who had 250 mg of caffeine or a placebo in the morning, and their withdrawal symptoms were measured around noon. Some people experience withdrawal symptoms sooner, though. One study even suggested caffeine withdrawal headaches could last for 21 days. Symptoms will be at their worst 20 to 51 hours after, and they can last anywhere from two to nine days. In general, caffeine withdrawal symptoms can start 12 to 24 hours after you have your last hit of caffeine. Anxiety - especially if you feel like you need caffeine to function and perform your best.Plus, if you’re experiencing fatigue and headaches, you’re probably not in the best mood anyway. Without these, you may feel flatter and more sluggish. Depressed mood - Caffeine makes you feel more alert and triggers the release of adrenaline and cortisol.Even more disturbing? People who regularly consume caffeine have an increased number of adenosine receptors and become more sensitive to adenosine and its drowsiness effects. Plus, if caffeine has been disturbing your sleep, the effects of sleep deprivation will also hit. Without caffeine, you’ll feel the effects of this. Adenosine is the chemical that builds up in your body as you’re awake, eventually making you feel sleepy.

Fatigue - Caffeine temporarily blocks adenosine receptors in your brain.Without caffeine, more blood flows to the brain, which can cause pain until your brain adjusts. Headaches - This is one of the most common symptoms, and it happens because caffeine constricts blood vessels in your brain.

The common caffeine withdrawal symptoms include: This is partly due to genetics, but also due to how much caffeine you’re used to having and how long you’ve been having it for. What Are the Symptoms of Caffeine Withdrawal?Ĭaffeine withdrawal will feel different for everyone.

Caffeine withdrawal