Eucalyptus is one of the most valued medicinal plants in Morocco for clearing the airways, soothing a cough and getting through the cold season. Known locally as “kalitous”, this majestic tree native to Australia is now widely planted across Morocco, and its fragrant leaves are a fixture of every herbalist’s shop. In this complete guide, discover the composition of eucalyptus, its benefits in detail, how to use it, the recommended dosage as a herbal tea and the precautions you must know before using it.
What is eucalyptus?
Eucalyptus (Eucalyptus globulus) is a large tree of the Myrtaceae family that can grow to several dozen metres tall. Native to Australia and Tasmania, it has been introduced to many countries around the Mediterranean basin, including Morocco, where it is prized for its timber, for its role in draining marshy soils and, above all, for its medicinal virtues.
It is the mature leaves, long and leathery, that concentrate most of the active compounds. Dried and cut, they are used to prepare infusions and steam inhalations. A highly concentrated essential oil is also extracted from them for use in aromatherapy. For generations, eucalyptus has been part of the traditional Moroccan remedy chest against winter ailments.
Composition and active compounds of eucalyptus
The therapeutic value of the plant rests on its composition. The leaves of common eucalyptus contain between 1 and 3% essential oil, whose main constituent is eucalyptol, also called cineole (or 1,8-cineole). It is this molecule that gives the leaf its characteristic scent and most of its properties.
Alongside eucalyptol, the leaves contain several families of beneficial compounds:
- Eucalyptol (cineole): the main active compound, responsible for the expectorant and anti-inflammatory effects.
- Flavonoids: powerful antioxidants that protect cells against oxidative stress.
- Tannins: with astringent and antimicrobial properties.
- Resin: which contributes to the soothing action on the mucous membranes.
The health benefits of eucalyptus
The virtues of eucalyptus are best known for the respiratory system, but the plant also offers other benefits worth knowing about.
An ally for the airways
This is its best-known use. Thanks to its high eucalyptol content, eucalyptus has an expectorant and mucolytic action: it helps thin and clear mucus, decongesting the bronchial tubes. It is traditionally used to accompany a cold, a chesty cough, bronchitis and sinusitis, making breathing easier.
An antiseptic and antimicrobial action
Eucalyptus is regarded as a natural antiseptic for the respiratory tract. Its compounds help limit the growth of certain micro-organisms, which makes it a welcome support during the cold months, when airway infections multiply.
Anti-inflammatory properties
Eucalyptol shows anti-inflammatory effects that are, to a certain extent, comparable to those of some anti-inflammatory drugs. This action helps calm irritation of the respiratory mucous membranes and reduce the sore, scratchy throat that so often comes with a chill.
An antioxidant effect
The flavonoids in the leaves act as antioxidants that protect cells from oxidative stress and help lower certain markers of inflammation. This support contributes to the healthy functioning of the immune system.
Support for digestive comfort
Beyond the ear, nose and throat sphere, eucalyptus is also known for mild digestive virtues. Drunk as an infusion after a meal, it may contribute to better digestive comfort, although this use remains secondary to its respiratory action.
How to use eucalyptus and at what dosage
Eucalyptus is most often taken as an infusion, as a steam inhalation or as an essential oil. Here are the most common methods and the dosages generally recommended.
- As an infusion: allow roughly 0.5 to 1 g of cut leaves per 250 ml cup. Steep for 5 to 7 minutes with a lid on to preserve the volatile compounds. You can drink 2 to 3 cups a day to soothe the throat and ease breathing.
- As a steam inhalation: put a few leaves or a few drops of essential oil in a bowl of hot water, then breathe in the steam under a towel for a few minutes to clear the bronchial tubes.
- As an essential oil: extremely concentrated, it must be used with caution and preferably on the advice of a healthcare professional.
As a general rule, it is advisable not to continue a course beyond three weeks without medical advice, and never to exceed the stated doses.
Precautions and contraindications
Natural though it is, eucalyptus is not free of precautions. Some situations call for the greatest care, or for avoiding it altogether.
- It is not advised in cases of asthma, as it can have a drying effect on the respiratory mucous membranes.
- Pregnant or breastfeeding women should seek medical advice before any use.
- It is not advised for children under 6, especially the essential oil.
- Do not continue a course beyond three weeks without a professional’s advice.
- If you are on medication or live with a chronic condition, medical advice is recommended.
Frequently asked questions about eucalyptus
Is eucalyptus effective against a cough?
Yes. Eucalyptus is traditionally used to soothe a chesty cough and make it easier to bring up mucus, thanks to its mucolytic and expectorant action. It is often combined with thyme to reinforce that effect on the airways.
How many cups of eucalyptus infusion per day?
In general, 2 to 3 cups a day are enough to benefit from it during a cold or a bout of sinusitis. It is best not to exceed that amount and to keep the course short.
Can you give eucalyptus to children?
Eucalyptus, and above all its essential oil, is not advised for children under 6. For older children, it is wise to ask a pharmacist or a doctor for advice before any use.
Conclusion
Eucalyptus stands out as an essential plant of Moroccan herbal medicine, particularly precious for clearing the airways in winter. Rich in eucalyptol, flavonoids and tannins, it offers expectorant, antiseptic, anti-inflammatory and antioxidant virtues. Provided you respect the dosages and the usual precautions, it makes a natural ally you can trust to get through the season of colds and coughs.
To go further
To deepen your knowledge of this plant, see the reference botanical entry on eucalyptus on Wikipedia. Also discover other plants that support the airways and general well-being on our blog: thyme, rosemary and ginger.
This article is provided for informational purposes and does not replace medical advice. If symptoms persist or you are in any doubt, consult a qualified healthcare professional before using eucalyptus.
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