Disclaimer

1. Informational purpose only — nojetlag.io is an informational and educational tool designed to help travelers think about the timing of light exposure, sleep, caffeine, and meals in relation to time-zone changes. All content on this website, including the plans generated by the planner, the blog articles, the illustrations, and any recommendations, is provided strictly for general informational purposes and does not constitute professional advice of any kind.

2. Not medical, diagnostic or therapeutic advice — The Service does not provide medical, diagnostic, therapeutic, psychological, psychiatric, nutritional, pharmaceutical, or fitness advice. Nothing on nojetlag.io is intended to diagnose, treat, cure, or prevent any disease, disorder, or medical condition. The plans are heuristics derived from published circadian research and should never be interpreted as a personalized medical prescription.

3. Consult a qualified professional — Always consult a qualified healthcare professional (physician, sleep specialist, pharmacist, or equivalent) before making any change to your sleep, medication, diet, caffeine intake, light-exposure practices, or supplementation, and in particular if you: have a diagnosed sleep disorder (insomnia, sleep apnea, narcolepsy, circadian rhythm disorders); take prescription or over-the-counter medication (including melatonin, sedatives, stimulants, hormonal treatments, or medication for depression, anxiety, bipolar disorder, or epilepsy); are pregnant, breastfeeding, or trying to conceive; are under 18 years of age or over 65; have a cardiovascular, metabolic, hepatic, renal, or endocrine condition; suffer from migraines or seizure disorders; have a history of mental-health conditions, including mood disorders, psychosis, or eating disorders; or if you drive, operate heavy machinery, fly aircraft, or perform any safety-critical activity where drowsiness could cause harm.

4. Limits of the underlying model — The Service uses a simplified circadian model based on the phase-response curves and general chronobiology principles described in the scientific literature. It cannot account for individual genetics (chronotype variability), pre-existing sleep debt, alcohol consumption, layovers, in-flight environment, individual response to caffeine or light, jet-lag susceptibility, or personal medical history. Real-world response to time-zone changes varies significantly from one person to another.

5. No guarantee of results — We make no promise, warranty, or representation, express or implied, that following a plan generated by the Service will prevent, reduce, or eliminate jet lag, improve sleep quality, or produce any specific health, cognitive, or performance outcome. Individual results will vary.

6. Caffeine, melatonin and bright-light exposure — The Service may suggest timings for caffeine intake, exposure to bright light, or avoidance of light. Caffeine, melatonin (where it is legally sold as a food supplement) and bright-light devices can have contraindications and interact with medication or medical conditions. Follow the manufacturer's instructions, respect the recommended daily doses, and check with a healthcare professional before use, particularly for melatonin, light-therapy lamps, and any supplement.

7. Travel and safety — Do not rely on the Service to make decisions about the safety of a trip, whether you are fit to travel, whether you should board a flight, or whether you are fit to drive after landing. If you feel unwell, do not travel and seek medical advice.

8. Medical emergencies — In case of a medical emergency, do not use this website. Call your local emergency number (112 in the European Union, 911 in the United States and Canada, or the number applicable in your country) or go to the nearest emergency room immediately.

9. Affiliate products — The Service may reference or link to third-party products (for example, sleep masks, blue-light glasses, blackout curtains, melatonin supplements). Such references do not constitute a medical or professional endorsement. We do not manufacture, test, certify, or guarantee those products. Product availability, regulatory status, and legal classification (in particular for supplements such as melatonin) vary between countries; it is your responsibility to check that a product is authorized and appropriate for use in your jurisdiction.

10. Affiliate disclosure — This site contains affiliate links. If you buy through them we may earn a small commission, at no extra cost to you.

11. No professional relationship — Use of the Service does not create any physician-patient, therapist-patient, coach-client, or other professional relationship between you and nojetlag.io or its operators.

12. No liability — To the maximum extent permitted by applicable law, we accept no liability for any decision, action, or omission taken on the basis of the information provided by the Service, including any direct, indirect, incidental, consequential, or punitive damages, personal injury, loss of income, or loss of well-being.

13. Updates — We may update this Disclaimer from time to time to reflect changes in the Service, our understanding of the underlying science, or applicable law. The latest version is always available on this page.

14. Contact — For any question related to this Disclaimer, please contact us at contact@nojetlag.io.