Mefidex Oral Spray
Natural health product licensed in Canada
- Other names
- Dormancy, Siesta, Snoozzz
- Licence holder
- PalCare Enterprises Inc
- NPN or DIN-HM
- 80084886
- Status
- Active licence
- Licence date
- 5 May 2018
- Revision date
- 31 May 2019
- Form
- Liquide
- Route of administration
- Orale
- Application type
- Officinale
If this product were sold in France
No point flagged by the rules we apply.
A daily quantity is calculated only for an explicit adult oral dosage, stated per day and in a solid unit matching the product form. Ambiguous units, liquids, powders and paediatric doses are not extrapolated. A quantity not calculated is not compared with dose limits. This analysis does not constitute authorisation for sale in France or an assessment of safety or efficacy.
Composition
| Medicinal ingredient and source | Per dosage unit, according to the source | Maximum per day, adult |
|---|---|---|
| Mélatonine Source : Synthétique | 1.2 milligramme | Not calculated |
Non-medicinal ingredients
Glycérine, Eau, Saveur de menthe
Recommended doses in Canada
| Population | Age | Quantity per serving | Frequency |
|---|---|---|---|
| Adultes | Not specified | minimum: 1 Pulvérisateur ; maximum: 8 Pulvérisateur | 1 Tous les jours |
Uses authorised in Canada
Text supplied in English because no French text is available.
Helps increase the total sleep time (aspect of sleep quality) in people suffering from sleep restriction or altered sleep schedule, e.g. shift-work and jet lag. Helps to prevent and/or reduce the effects of jet lag (e.g. daytime fatigue, sleep disturbance) for people travelling by plane easterly across two or more time zones. Helps to reduce the time it takes to fall asleep (sleep onset latency aspect of sleep quality) in people with delayed sleep phase disorde. Helps re-set the body's sleep-wake cycle (aspect of the circadian rhythm.
A use authorised in Canada is not an authorised health claim in the European Union. See the health claims register.
Warnings in Canada
No French warning text available in the imported data.
Warnings are available in English on the official record.
Source
Official Health Canada record, licence 80084886
Licensed Natural Health Products Database (LNHPD), Health Canada: licensed products, ingredients, doses, uses and risks, retrieved 27 October 2026.
Contains information licensed under the Open Government Licence – Canada (Health Canada, LNHPD)
Licence du gouvernement ouvert – Canada 2.0 (OGL-Canada 2.0)
The formula sold in Europe under the same name may differ. This information does not replace advice from a doctor or pharmacist.
Official warnings (Health Canada)
Health Canada publishes warnings on these ingredients:
- Mélatonine
Read the warning, when it applies and the studies cited
MELATONIN - Oral
Cautions and warnings
Ask a health care practitioner/health care provider/health care professional/doctor/physician before use if you are taking medications for seizure, blood pressure, to suppress the immune system, to affect mental state or increase sedation, steroids or blood thinners (Wirtz et al. 2008; IOM 2004; Herxheimer and Petrie 2002; Lusardi et al. 2000; Maestroni 1993).
5 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Ask a health care practitioner/health care provider/health care professional/doctor/physician before use if you have cardiovascular, immune, liver or kidney disease, seizure disorder, asthma or diabetes (Peschke and Mühlbauer 2010; Carrillo-Vico et al. 2005; IOM 2004; der Marderosian and Beuttlers 2003; Sutherland et al. 2003; Calvo et al. 2002; Herxheimer and Petrie 2002; Sutherland et al. 2002; Cagnacci et al. 2001a; Arangino et al. 1999; Sheldon 1998; Maestroni 1993).
12 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
When using this product avoid taking with alcohol or products that cause drowsiness (Herxheimer and Petrie 2002; Holliman and Chyka 1997).
2 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
When using this product avoid driving or using machinery for 5 hours (Avery et al. 1998; Suhner et al. 1998b).
2 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Ask a health care practitioner/health care provider/health care professional/doctor/physician if sleeplessness persists for more than 4 weeks (chronic insomnia) (Buscemi et al. 2004; IOM 2004; Dipiro et al. 2002).
3 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Contraindications
Do not use if you are pregnant or breastfeeding (IOM 2004).
1 study cited in the text has no matching reference in the monograph (see the anomalies listed on the sources page).
Known adverse reactions
Stop use if allergy occurs or if you experience headache, confusion, or nausea (Herxheimer and Petrie 2002).
1 study cited in the text has no matching reference in the monograph (see the anomalies listed on the sources page).
Health Canada monograph dated 19 December 2025
MELATONIN - Sublingual
Cautions and warnings
Ask a health care practitioner/health care provider/health care professional/doctor/physician before use if you are taking medications for seizure, blood pressure, to suppress the immune system, to affect mental state or increase sedation, steroids or blood thinners (Wirtz et al. 2008; IOM 2004; Herxheimer and Petrie 2002; Lusardi et al. 2000; Maestroni 1993).
5 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Ask a health care practitioner/health care provider/health care professional/doctor/physician before use if you have a cardiovascular, immune, liver or kidney disease, seizure disorder, asthma or diabetes (Peschke and Mühlbauer 2010; Carrillo-Vico et al. 2005; IOM 2004; der Marderosian and Beuttlers 2003; Sutherland et al. 2003; Calvo et al. 2002; Herxheimer and Petrie 2002; Sutherland et al. 2002; Cagnacci et al. 2001a; Arangino et al. 1999; Sheldon 1998; Maestroni 1993).
12 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
When using this product avoid taking with alcohol or products that cause drowsiness (Herxheimer and Petrie 2002; Holliman and Chyka 1997).
2 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
When using this product avoid driving or using machinery for 5 hours (Avery et al. 1998; Suhner et al. 1998b).
2 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Ask a health care practitioner/health care provider/health care professional/doctor/physician if sleeplessness persists for more than 4 weeks (chronic insomnia) (Buscemi et al. 2004; IOM 2004; Dipiro et al. 2002).
3 studies cited in the text have no matching reference in the monograph (see the anomalies listed on the sources page).
Contraindications
Do not use if you are pregnant or breastfeeding (IOM 2004).
1 study cited in the text has no matching reference in the monograph (see the anomalies listed on the sources page).
Known adverse reactions
Stop use if allergy occurs or if you experience headache, confusion, or nausea (Herxheimer and Petrie 2002).
1 study cited in the text has no matching reference in the monograph (see the anomalies listed on the sources page).
They concern the ingredient, not this product or its dose. They do not replace medical advice.
List in the official revision dated (register: Licensed Natural Health Products Database (LNHPD), Health Canada: licensed products, ingredients, doses, uses and risks).
Is something on this product wrong or out of date, whether you are a reader or the brand? Write to contact@compoatlas.com: every correction is published in the corrections log.