# Review caffeine and sleep together

Published by Pawel Jozefiak. [About this project](https://adhd100.jock.pl/about/), [How we check sources](https://adhd100.jock.pl/methodology/)

- Canonical: https://adhd100.jock.pl/caffeine-sleep-review/
- Language: en
- First published: 2026-09-29
- Evidence checked: 2026-09-29, using AI-assisted source verification
- Clinical review: Not clinically reviewed
- Number 50 of 100 in the list: https://adhd100.jock.pl/#caffeine-sleep-review

Include caffeine timing, from coffee, tea and energy drinks, when you talk about your sleep.

**The number:** Avoid tea or coffee for at least 6 hours before bed ([NHS, 2024](https://www.nhs.uk/conditions/insomnia/))

## The evidence

- How sure: Certainty of evidence: Not rated. Measured in the general population; we say so because ADHD trials of this do not exist or are too small.
- Evidence grade: B. Grade B: trials in ADHD with low certainty, or strong general health evidence with a sourced reason it matters more with ADHD.
- Basis: General NHS insomnia advice and NHS adult ADHD self-care advice, with ADHD-specific sleep-risk evidence; no rating for a timing review.
- Outcome: suggested interval between caffeine and bedtime
- Comparison: general NHS insomnia advice
- Benefit: 52/100. The benefit score is an editorial prioritization for the general list, weighted by certainty. It is not a prediction of what will happen for you.

## Why it matters

Caffeine can get in the way of sleep, and general NHS guidance says to keep it away from bedtime. The NHS page on adult ADHD also suggests avoiding caffeine close to bedtime. Adults with ADHD already report more sleep problems than peers without ADHD. Knowing when you have caffeine can help a clinician assess your sleep, but caffeine is not an established ADHD treatment.

## How to do it

1. List your caffeinated drinks and roughly when you have them.
2. Note when you try to sleep and how your sleep goes.
3. Ask a clinician or pharmacist how your caffeine timing fits your sleep and any medicines.

## Talk to a clinician first

Use this to prepare for a conversation, especially if you take medicines, are pregnant or have ongoing sleep problems.

## Putting it into practice

### Start now

- 1 minute: Name the time of your usual last caffeinated drink of the day.
- 5 minutes: List yesterday's caffeinated drinks and their approximate times.
- 15 minutes: Prepare a short sleep-and-caffeine note and one question for a clinician or pharmacist.

### What it looks like

- Bring a note that your last coffee is late afternoon and you struggle to fall asleep.
- Include tea and energy drinks when describing your caffeine use.

### Common mistakes

- Counting only coffee misses other sources. Include every caffeinated drink.
- Using caffeine as ADHD medication skips the assessment. Talk about the problem you're trying to solve.

### Trusted how-to guides

- [About Sleep](https://www.cdc.gov/sleep/about/index.html), CDC
- [Insomnia](https://www.nhs.uk/conditions/insomnia/), NHS

## Sources

- [Insomnia](https://www.nhs.uk/conditions/insomnia/), NHS, 2024 (Tier 1 guideline)
- [Sleep in adults with ADHD: Systematic review and meta-analysis of subjective and objective studies](https://pubmed.ncbi.nlm.nih.gov/29477617/), Neuroscience and Biobehavioral Reviews, 2018 (Tier 2 study)
- [About Sleep](https://www.cdc.gov/sleep/about/index.html), CDC, 2024 (Tier 1 guideline)
- [ADHD in adults](https://www.nhs.uk/conditions/adhd-adults/), NHS, 2025 (Tier 1 guideline)

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General information about ADHD, not a diagnosis or an individual treatment plan. Tailoring changes the order of suggestions; it does not assess you. Medication decisions belong with you and a qualified clinician.

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