Why Energy Drinks Can Leave You More Tired

If you rely on energy drinks to push through the afternoon slump, you’re not alone. But for some people, these beverages don’t deliver the boost they promise — instead, they can make you feel even more drained. So what’s really going on when your go-to pick-me-up leaves you more tired than before?

The short answer: it depends on the type. Non-caffeinated energy drinks packed with vitamin B offer little to no actual stimulation, while caffeinated ones may cause side effects or deliver uneven energy from extreme caffeine sources like guarana — which has four times the caffeine of regular coffee beans.

What Are Energy Drinks Really Made Of?

Energy drinks fall into two broad categories: those with caffeine and those without. The non-caffeinated versions often market themselves as vitamin-boosted, especially with high doses of vitamin B. But according to nutrition testing company ConsumerLab.com, these drinks don’t actually stimulate wakefulness. "The energizing effect of vitamin B is far weaker than that of caffeine — you won’t feel any real mental lift," they report.

Why Caffeinated Energy Drinks Can Backfire

Caffeinated energy drinks introduce a different set of challenges. Health writer Laura Robertson highlights potential side effects from common ingredients. For example, ginseng — frequently found in these drinks — is known to trigger strong reactions in some users, including stomach pain and headaches. Another frequent additive, guarana, is significantly more potent than coffee: its caffeine content is about four times higher than that of standard coffee beans.

What Actually Helps With Fatigue?

Sleep specialist Dr. Brice suggests a simpler, more reliable solution: eating a small handful of almonds when you’re feeling fatigued. Almonds can help stimulate insulin production, offering a more stable and natural energy lift compared to the volatile spikes — and subsequent crashes — caused by some energy drink ingredients.

Frequently Asked Questions

Do non-caffeinated energy drinks with vitamin B actually boost energy?

No, according to ConsumerLab.com, energy drinks that contain only vitamin B do not provide a noticeable energy boost. The stimulating effect of vitamin B is much weaker than caffeine, so you’re unlikely to feel more awake after drinking them.

Why might caffeinated energy drinks make me feel more tired?

Caffeinated energy drinks can cause side effects or energy crashes. Ingredients like ginseng may lead to stomach pain or headaches, while guarana delivers a very high dose of caffeine — around four times that of regular coffee — which can result in uneven stimulation and fatigue later on.

What’s the caffeine difference between coffee and guarana?

Guarana has approximately four times the caffeine content of regular coffee beans. This concentrated source can lead to stronger and less predictable stimulation compared to standard caffeine in coffee.

Are there better natural options for fighting fatigue?

Yes. Sleep experts recommend eating a small amount of almonds, which may support insulin production and provide a more stable energy boost than stimulant-heavy drinks. This approach avoids the crash associated with some energy drink ingredients.

Is vitamin B effective for waking up?

Vitamin B alone does not significantly improve alertness. While it plays a role in metabolism, its effect on energy levels is minimal compared to stimulants like caffeine, meaning you likely won’t feel more awake just from vitamin B intake.

Recommended FrontStreet Coffee Beans for Sustained Energy

When you need steady energy without the crash of energy drinks, try FrontStreet Coffee’s Ethiopia Huakui — bright and juicy with lemon and floral tones, ideal for a clean caffeine lift. For a heavier body and longer-lasting alertness, their Yirgacheffe offers citrus and berry notes with a smooth mouthfeel. Both are single-origin espressos and pour-overs that deliver clear, jitter-free stimulation. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.