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Does Caffeine Cause Anxiety?

Coffee mug on a table representing caffeine and anxiety.

Martin Travis |

If you’ve ever had coffee and suddenly felt jittery, on edge or overwhelmed, you’re not imagining it. Yes — caffeine can cause anxiety, and for some people, even trigger panic-like symptoms.

Caffeine stimulates the central nervous system and increases adrenaline — great for focus in small doses, but problematic when your system becomes overstimulated.

This guide breaks down exactly why caffeine can cause anxiety, how much is too much, who is most sensitive, and how to stay calm without giving up your morning coffee.

This is not medical advice — just practical, evidence-informed guidance.

Why caffeine can trigger anxiety symptoms

Caffeine speeds up your nervous system. In the right amount, this feels like alertness. In the wrong amount, it feels like:

  • racing thoughts
  • increased heart rate
  • shakiness or jitters
  • sweaty palms
  • restlessness
  • feeling “on edge”
  • difficulty focusing

1. Caffeine increases adrenaline

This is your “fight or flight” hormone. Too much caffeine = too much adrenaline = anxiety-like sensations.

2. Caffeine blocks adenosine (your tiredness chemical)

When adenosine is blocked, the brain speeds up — sometimes too much.

3. Caffeine increases cortisol levels

High cortisol is strongly linked to anxiety, irritability and sleep issues.

4. Caffeine overstimulates the nervous system

If you’re already stressed, caffeine pours fuel on the fire.

How much caffeine is too much?

Most people begin experiencing anxiety effects at 200–400mg of caffeine.

  • 1 espresso = ~65mg
  • 1 brewed coffee = 90–120mg
  • 1 energy drink = 80–200mg
  • 1 cup of tea = 40–60mg

If you’re sensitive, even 50–100mg may trigger symptoms.

The caffeine half-life problem

Caffeine has a half-life of around 6–8 hours.

This means if you drink a coffee at 3pm, half of it is still in your system at 9–11pm.

That can lead to:

  • night anxiety
  • racing thoughts before sleep
  • shallow sleep
  • frequent wake-ups

Read more: Best CBD Oils for Sleep in 2025

Caffeine jitters vs anxiety: what’s the difference?

Jitters (mostly physical)

  • shaky hands
  • fast heartbeat
  • restlessness
  • short-lived

Anxiety (physical + mental)

  • racing thoughts
  • fear or dread
  • emotional overwhelm
  • lingers for hours

Caffeine can cause one, the other, or both.

Who is most sensitive to caffeine?

You may be more likely to experience caffeine anxiety if you:

  • are already stressed or running on little sleep
  • are perimenopausal or menopausal
  • have an anxious personality type
  • take certain medications
  • have fast caffeine metabolism (genetics)
  • drink coffee on an empty stomach

How to reduce caffeine-induced anxiety

1. Don’t drink caffeine on an empty stomach

Food slows absorption and reduces the adrenaline spike.

2. Choose lower-caffeine options

  • matcha
  • green tea
  • half-caff coffee

3. Set a caffeine cut-off time

For most people, this is 1–2pm.

4. Support your nervous system

5. Try a caffeine-free morning ritual

Lemon water, herbal tea, protein smoothies or cacao drinks are great alternatives.

How Evopure can help calm caffeine-induced anxiety

If you love coffee but hate the jitters, this combo works well:

These products support:

  • stress resilience
  • balanced energy
  • better sleep quality
  • fewer caffeine crashes

Frequently asked questions

Why does caffeine make me anxious?

It increases adrenaline and overstimulates the nervous system, which mimics anxiety.

How long does caffeine anxiety last?

Anywhere from 2 to 6 hours, depending on metabolism and dose.

Can caffeine cause panic attacks?

In some people, yes — especially if consumed on an empty stomach or in high doses.

What helps calm caffeine anxiety fast?

Hydration, walking, eating, breathwork, magnesium or CBD.

Does decaf still cause anxiety?

Decaf contains 2–5mg of caffeine, so it’s much less likely to trigger symptoms.

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Final thoughts

Caffeine doesn’t cause anxiety in everyone — but if you’re sensitive, stressed or sleep-deprived, it can significantly amplify symptoms.

With the right habits and support, you can enjoy your coffee without the crash.

Shop Flow CBD Oil for calm, balanced days

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