What are the possible side effects of buspirone (BuSpar, BuSpar Dividose)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have a serious side effect such as: chest pain; feeling short or breath; or
Chronic toxicity. Repeated use of essential oils over many months or even years can produce adverse skin reactions and other health problems. Some common symptoms of chronic essential oils toxicity are nausea, headaches, lethargy and minor skin irritations.
Cats in particular are missing some detoxifying liver enzymes (when compared to dogs or people) and are highly sensitive to hot oils like cinnamon, oregano, clove, wintergreen, thyme and birch. Skin application of 100 percent tea tree oil has caused liver failure in some cats, for example.