(Hyssopus officinalis ct pinocamphone) Traditionally used to support healthy breathing, immune and circulatory function.
Asthma: Schnaubelt writes: "Do not use Hyssop off. var. officinalis, the high ketone content makes it patently unsafe for these applications [for asthma]. The H. decumbens variety is practically free of ketones but has a desirably high proportion of the antiasthmatic and tonifying compound trans-linalool-oxide."
Hyssop is sometimes mentioned to be contraindicated for epilepsy. The convulsant action of hyssop oil is assumed to be due to its content of pinocamphone (31.2–42.7%) and isopinocamphone (30.9–39.2%).
Avoid contact with the eyes and other sensitive areas. Essential oils are both lipophilic and hydrophobic. Lipophilic means they are attracted to fat— like the membranes of your eyes and skin. They are also hydrophobic, meaning they do not like water. Applying a carrier oil will create another fat for the essential oil to be attracted to other than the membranes of the eyes or skin. Tisserand suggests: "With essential oils, fatty oil has been suggested as an appropriate first aid treatment, though the advantage of saline [eyewash] is that the eyes can be continually flushed, and this is less easy with fatty oil.” We are not aware of a case where essential oil in the eyes caused permanent injury or long-term discomfort, but if you feel concerned, please call your health care provider.