Yes, energy drinks can affect both anxiety and depression. High doses of caffeine can trigger a racing heart, restlessness, and panic-like symptoms. Poor sleep and caffeine crashes can drag mood down over time. For some people, added B vitamins like B12 may also play a role in how they feel.
Most people reach for an energy drink for a simple reason: they are tired. “We’re all so busy, we all get tired,” says Nicole Cummins, APRN. “I know, I’ve been there.” Work runs long, kids need attention, and the afternoon slump hits hard. So it makes sense to ask the real question: do energy drinks cause anxiety, or make depression worse?
The answer depends on what is in the can, how much you drink, and how your body processes it. Caffeine gets most of the attention. Cummins, a psychiatric mental health nurse practitioner at Mental Health & Wellness of Southern Utah, flags a less obvious ingredient. Many energy and protein drinks contain added B vitamins.
Do Energy Drinks Cause Anxiety? What the Research Shows
Energy drinks can cause anxiety symptoms, and they can worsen an existing anxiety disorder. Caffeine is the main driver. It stimulates the central nervous system and raises adrenaline levels.
The National Center for Complementary and Integrative Health links caffeine use to anxiety, sleep problems, digestive issues, and dehydration. Psychiatry’s diagnostic manual, the DSM-5, even includes a diagnosis called caffeine-induced anxiety disorder. That label applies when caffeine directly produces significant anxiety or panic.
How Caffeine Triggers Anxiety Symptoms
Caffeine blocks adenosine, a brain chemical that helps you feel calm and sleepy. With adenosine blocked, your body shifts toward a fight-or-flight state. Many of the resulting sensations mirror anxiety:
- Racing or pounding heartbeat
- Shaky hands and muscle tension
- Restlessness and trouble sitting still
- Racing thoughts or a sense of dread
- Upset stomach or nausea
For someone already prone to anxiety, these physical signals can spark a panic cycle. Your brain notices the pounding heart and reads it as danger. That alarm then produces more adrenaline and more symptoms.
How Much Caffeine Is in an Energy Drink?
Caffeine content varies widely between brands. The FDA lists energy drinks at roughly 41 to 246 milligrams of caffeine per serving. For most healthy adults, the agency cites 400 milligrams daily as an amount not generally tied to negative effects.
Two large energy drinks can push you near that ceiling quickly. Add a morning coffee or a pre-workout supplement, and you may pass it without noticing. Some products also contain guarana, a plant source of caffeine that may not appear in the main caffeine total.
Sensitivity varies too. Some people feel jittery after half a can, while others tolerate much more. Your genetics, body size, sleep, and medications all affect how quickly you clear caffeine.
Can Energy Drinks Contribute to Depression?
The link between energy drinks and depression is less direct than the anxiety link. It still matters. Energy drinks can affect mood through sleep loss, blood sugar swings, and withdrawal cycles.
The Sleep and Crash Cycle
Caffeine can stay active in your system for many hours. An afternoon energy drink can delay sleep, shorten deep sleep, or both. Poor sleep is one of the strongest predictors of low mood and irritability.
Here is how the cycle often plays out:
- You sleep poorly and wake up exhausted.
- An energy drink gets you through the morning.
- A sugar and caffeine crash hits by mid-afternoon.
- Another drink restores energy but disrupts sleep again.
Over weeks, this pattern can leave you drained, foggy, and emotionally flat. Those symptoms overlap heavily with depression. Persistent fatigue can also signal other issues, which is why tracking why you feel tired all the time is worth the effort.
What Studies in Young People Found
Much of the research focuses on teens and young adults, who drink energy drinks most often. A 2023 systematic review in Public Health examined evidence on children and young people. Frequent energy drink use was associated with anxiety, stress, depressive symptoms, panic symptoms, and suicidality risk.
Association does not prove cause. Young people under stress may simply reach for energy drinks more often. Even so, the pattern is consistent enough that researchers urged tighter limits on sales to children.
The Overlooked Ingredient: Added B Vitamins
Caffeine is not the only ingredient worth watching. Many energy drinks contain large doses of B vitamins, often well above daily needs. Protein shakes frequently contain them too.
Cummins explains the concern directly:
“Be very aware of B12 in your energy drinks anytime that’s added. If you have a hard time clearing it, it can cause oxidative stress, inflammation, depression, and anxiety.”
Why the Form of B12 Matters to Some People
Vitamin B12 comes in several forms. According to the NIH Office of Dietary Supplements, methylcobalamin is one of the body’s active forms. Cyanocobalamin, the form most common in supplements, must be converted before the body can use it.
Most people handle that conversion without trouble. Some people carry genetic variations that affect how efficiently they process B vitamins and folate. MTHFR variants are the best-known example, though their clinical impact is still debated.
In clinical practice, Cummins watches for patients whose mood or anxiety symptoms seem to track with heavy vitamin-fortified drink intake. Large-scale research on this specific connection is limited. That is why she stresses self-awareness: “It is very important that you pay attention to how you’re feeling.”
Genetic testing for mental health can show how your body handles certain nutrients and medications. It can help separate a nutritional factor from a primary mood disorder.
Protein Shakes Carry the Same Concern
Prepackaged protein drinks like Ensure and Premier Protein are popular meal replacements. Many contain added folic acid and B12 alongside protein. Busy people often drink them daily without checking the label.
Folic acid is the synthetic form of folate. Like cyanocobalamin, it requires conversion in the body. If you drink several fortified products a day, those vitamin doses can stack up.
None of this means protein shakes are dangerous for most people. It means you should know what you are drinking and notice how you feel afterward.
Signs Your Energy Drink Habit May Be Affecting Your Mood
Your body often signals when a habit is not working for you. Watch for these patterns:
- Anxiety or jitters that start within an hour of drinking
- Heart palpitations or chest tightness
- Trouble falling asleep, even when exhausted
- Afternoon crashes followed by irritability or sadness
- Needing more drinks to get the same boost
- Headaches, fatigue, or low mood on days you skip them
- Feeling “wired but tired” most of the day
A simple experiment can help. Keep a short log for two weeks. Note what you drank, when, and how you felt over the next few hours. Patterns often become obvious fast.
How to Cut Back Without Feeling Worse
Stopping energy drinks abruptly can cause caffeine withdrawal. Typical symptoms include headaches, fatigue, irritability, and low mood. These usually fade within a few days to about a week.
A gradual approach is easier on your body:
- Taper slowly. Drop by half a can every few days instead of quitting cold.
- Set a cutoff time. Avoid caffeine in the afternoon to protect sleep.
- Read labels. Check for caffeine, guarana, sugar, folic acid, and B12 content.
- Hydrate first. Fatigue sometimes reflects dehydration rather than low energy.
- Address the root cause. Constant exhaustion may point to sleep problems, stress, or depression.
Lifestyle changes like these often support anxiety treatment. Many people find that anxiety can improve without medication through therapy, better sleep, and smarter nutrition choices.
Getting Help for Anxiety and Depression in St. George and Cedar City
If cutting back on energy drinks does not ease your symptoms, something deeper may be going on. Ongoing anxiety or depression deserves a proper evaluation.
Care in St. George
Mental Health & Wellness of Southern Utah has two St. George clinics: Ventana and Morningside. Providers at both locations offer medication management, counseling, and personalized treatment for anxiety and depression.
Care in Cedar City
Patients in Iron County can visit the Cedar City location for the same range of psychiatric and counseling services. Nicole Cummins sees patients at both the Ventana and Cedar City offices.
To schedule an appointment at any location, call 435-652-1897.
Frequently Asked Questions
Can energy drinks cause panic attacks?
Yes, energy drinks can trigger panic attacks in some people. High caffeine doses raise heart rate and adrenaline, which can mimic or spark panic. People with panic disorder are often especially sensitive to caffeine.
Are sugar-free energy drinks better for anxiety?
Sugar-free versions remove the blood sugar crash, which may help mood stability. They still contain the same caffeine, though. Caffeine remains the main anxiety trigger, so sugar-free does not mean anxiety-free.
How long does caffeine-related anxiety last?
Acute jitters usually ease within a few hours as caffeine wears off. Caffeine can stay active in your body much longer, especially if you are pregnant or older. Sleep disruption from a late drink can affect mood into the next day.
Can energy drinks interact with anxiety or depression medications?
Caffeine can interact with some psychiatric medications. It may affect how certain drugs are processed or amplify side effects like restlessness and insomnia. Tell your prescriber how much caffeine you consume, including energy drinks and supplements.
Is coffee better than energy drinks for people with anxiety?
Coffee typically contains less caffeine per serving than large energy drinks. It also lacks added sugar, taurine, and high-dose vitamins. People with anxiety may still need to limit coffee, but it is usually easier to control the dose.
Should teenagers drink energy drinks?
Most health authorities discourage energy drinks for children and teens. Young people are more sensitive to caffeine’s effects on heart rate, sleep, and mood. Research links frequent teen use to higher rates of anxiety and depressive symptoms.
Reviewed by Nicole Cummins, APRN
This article is for informational purposes only and does not constitute medical advice. Consult a qualified mental health professional or your primary care provider for diagnosis and treatment recommendations specific to your situation. If you are experiencing a mental health crisis, call or text 988 to reach the 988 Suicide & Crisis Lifeline.