Why Do Stimulants Make Me Sleepy?

In today's fast-paced world, it's common for many of us to feel exhausted or drained throughout the day. Whether it's due to our busy schedules, lack of sleep, or high stress levels, we often turn to stimulants, energy supplements, and nootropics to help boost our energy levels and increase our focus.

While these options can be effective for many people, some may find that stimulants actually make them feel sleepy instead of more alert. This can be frustrating, especially if you rely on these substances to get through your day.

In this article, we'll explore why stimulants can make you feel sleepy, whether too much caffeine in either coffee or caffeine pills can cause tiredness, and what other potential side effects stimulants may have. We'll also discuss how you can stop stimulants from making you sleepy and explore natural alternatives that can help boost your energy levels without causing adverse effects. Whether you're looking to improve your mental performance, increase your productivity, or simply feel more alert and focused, this article has got you covered.

Why Do Stimulants Make Me Sleepy?

Stimulants, like caffeine and prescription medications, are typically used to increase energy levels and promote wakefulness. However, some people experience the opposite effect: stimulants make them feel sleepy or even cause difficulty with sleep. This can be frustrating, especially if the individual is taking these substances to combat fatigue or to stay alert during the day.

One potential reason for this unexpected effect is that stimulants work by blocking adenosine receptors in the brain. Adenosine is a neurotransmitter that builds up in the brain over the course of the day, promoting sleepiness and eventually triggering the onset of sleep. By blocking these receptors, stimulants prevent adenosine from binding and signaling the brain to become sleepy.

However, with repeated use of stimulants, the brain may become desensitized to their effects. This can result in a decrease in the number of available adenosine receptors, making it more difficult for the stimulant to block them and keep the individual awake. As a result, the individual may experience the opposite effect of feeling sleepy or tired.

Does Too Much Caffeine Cause Tiredness?

stimulants in energy drinks

While caffeine is a commonly used stimulant, too much of it can actually cause tiredness. This can happen as a result of caffeine tolerance, where the body becomes accustomed to the effects of caffeine and requires more of it to achieve the same level of stimulation. Over time, excessive caffeine intake can lead to fatigue and difficulty with sleep.

Additionally, caffeine can interfere with the body's levels of serotonin, a neurotransmitter that is important for regulating mood, appetite, and sleep. Too much caffeine can decrease the amount of available serotonin in the brain, leading to feelings of tiredness and sluggishness.

A study published in the Journal of Sleep Research found that higher caffeine intake was associated with increased daytime sleepiness and worse sleep quality in adults with chronic insomnia. Another study published in the Journal of Clinical Sleep Medicine found that caffeine consumption even six hours before bedtime can lead to significant sleep disturbance.

It is worth noting that not everyone experiences these effects from caffeine and other natural stimulants, and individual responses can vary based on factors such as genetics, caffeine intake levels, sleep habits, and other medications being taken. However, if you find that stimulants are making you feel sleepy, it may be worth considering reducing your caffeine intake or adjusting your sleep habits to ensure that you are getting enough restorative sleep.

What Other Side Effects Do Stimulants Cause?

Stimulants can also cause a range of other side effects, in addition to making some individuals feel sleepy. These include anxiety, nervousness, jitters, and restlessness. Over time, excessive use of stimulants can lead to tolerance and dependence, as well as withdrawal symptoms when the substance is no longer used.

Energy drinks, in particular, have been associated with adverse effects such as heart palpitations, high blood pressure, and even death in rare cases. Prescription stimulant medications used to treat attention deficit hyperactivity disorder (ADHD) can also have negative effects, including appetite suppression, weight loss, and irritability.

Here is a list of the main side effects associated with stimulants, including natural stimulants:

  • Anxiety
  • Nervousness
  • Restlessness
  • Insomnia or difficulty sleeping
  • Jitters or tremors
  • Headaches
  • Increased heart rate or palpitations
  • High blood pressure
  • Dehydration
  • Appetite suppression
  • Digestive issues such as nausea or diarrhea
  • Withdrawal symptoms when discontinued
  • Caffeine crashes or energy crashes
  • Increased risk of heart attack or stroke with excessive use
  • Dependence or addiction
  • Negative effects on mental health, including mood swings and anxiety disorders
  • Interference with sleep patterns and chronic fatigue
  • Adverse effects on cognitive performance and attention span
  • Reduced performance and motivation without the stimulant present
  • Negative effects on the thyroid and adrenal glands with prolonged use
  • Increased risk of drug interactions with other medications or supplements.

If you experience any of these side effects, stop using stimulants immediately and seek medical attention. 

How To Stop Stimulants Making You Sleep

If you are experiencing difficulty with sleep or extreme tiredness after using stimulants, there are several steps you can take to help combat these effects.

First, try reducing your caffeine intake, either by decreasing the number of cups of coffee or other caffeinated beverages you consume per day or by switching to decaffeinated versions. If you are taking prescription stimulant medication, talk to your doctor about potential alternatives, such as non-stimulant medication.

Another option is to incorporate healthy sleep habits into your routine, such as going to bed and waking up at the same time every day, avoiding screens before bedtime, and creating a relaxing sleep environment. If necessary, consider using a sleep aid or seeking professional help for an underlying sleep disorder.

In conclusion, while stimulants are often used to increase energy levels and promote wakefulness, they can also have adverse effects, including making some individuals feel sleepy or tired. Understanding the potential side effects of stimulants and taking steps to mitigate them, such as reducing caffeine intake or improving sleep habits, can help promote overall mental health and wellbeing.

Stacking Stimulants To Prevent Sleepiness & Crashes


When it comes to enhancing the effects of stimulants such as caffeine, many people turn to supplement stacks to improve their focus and energy levels. Two popular nootropics for stacking with caffeine are Theanine and Tyrosine.

Theanine is an amino acid found naturally in tea leaves that has been shown to promote relaxation and reduce stress. When combined with caffeine, it can help reduce the jitters and anxiety that can sometimes come with caffeine consumption, while still providing a boost in focus and alertness.

Tyrosine, on the other hand, is an amino acid that is used by the body to produce dopamine, a neurotransmitter that is associated with motivation, attention, and pleasure. By supplementing with Tyrosine alongside caffeine, individuals may experience enhanced focus and mental energy. These all work well when taken with citicoline, which is know for limited side effects. 

How Much Caffeine Should You Take To Avoid Side Effects?

Research shows that caffeine consumption in moderate amounts can lead to a range of cognitive benefits, including increased alertness, improved mood, and enhanced cognitive performance. However, excessive caffeine consumption can result in adverse effects such as sleep disturbances, anxiety, and jitteriness. Finding the optimal dosage of caffeine for cognitive enhancement while avoiding side effects can be a challenge.

Several studies suggest that a dose of 75 mg of caffeine is the most effective for improving cognitive performance while avoiding the negative side effects of caffeine consumption. In one study, participants who consumed a 75 mg dose of caffeine showed significant improvements in cognitive function, including enhanced attention and improved reaction times, without experiencing any adverse side effects such as sleep disturbances or energy crashes.

It's important to note that the optimal dose of caffeine may vary depending on individual factors such as body weight, tolerance to caffeine, and overall health. It is always recommended to start with a lower dose and gradually increase if necessary while closely monitoring for any adverse effects.

Using Vyvamind For Daily Energy & Focus Without Side Effects


Vyvamind has been carefully calibrated to deliver maximum benefits while minimizing side effects, including the daytime sleepiness and energy crashes that often follow heavy stimulant usage. 


Each serving of Vyvamind provides 75mg of clean, potent caffeine anhydrous. This dose has been clinically proven to quickly increase focus, mental energy and reaction times, but it will not cause the same side effects as larger doses of the stimulant.


To further reduce stimulant side effects and potentiate benefits, Vyvamind uses 150mg of Theanine; this nootropic has been clinically proven to attenuate the side effects of caffeine while at the same time promoting mental clarity and reducing anxiety.