As with many other essential oils, pregnant and breastfeeding women should avoid using lavender essential oil. It is also recommended that patients with diabetes stay away from lavender oil. It may also cause allergic reactions to people that have unusually sensitive skin. Some people may also witness nausea, vomiting, and headaches due to excessive use of lavender oil.
Perhaps most importantly, lavender oil should never be ingested, only topically applied or inhaled through means of aromatherapy or similar activities. Ingestion can cause serious health complications, characterized by blurred vision, difficulty in breathing, burning eyes, vomiting, and diarrhea. So, even if you think that lavender oil is a wonderful cure, don’t get excited and start putting it on your food.