“We often even have an interest in associating essential oils to an allopathic treatment, explains Danièle Festy, pharmacist and aromatologist. They then allow the treatment to be more quickly effective and better tolerated. “In addition, people undergoing chemotherapy can use EO from lemon, celery or lovage, to support the liver in its role of detoxification (1 drop of EO of celery + 1 drop of EO of lemon zest on 1 neutral tablet or in ½ teaspoon of olive oil). Aromatherapy is also perfectly compatible withhomeopathy. If we take essential oils with a homeopathic treatment (both orally), we just make sure to always start with the granules, followed 20 minutes later by the drops. The reason: some essential oils (mint, eucalyptus) have a vasoconstrictor effect. By causing the tightening of the small vessels located under the tongue, they would prevent the penetration of the homeopathic medicine into the blood.