Essential oils are concentrated volatile aromatic compounds produced by aromatic plants that have been found to exhibit a variety of biological properties, such as analgesic [4], spasmolytic [6] and anticonvulsant [3] activities. Monoterpenes are the primary components of these essential oils and
the effects of many medicinal herbs have been attributed to them [7–10]. Isopulegol (p-menth-8-en-3-ol) (Fig. 1A) is a monoterpene alcohol of p-menthane family, intermediate in the preparation of (−)-menthol [11] (Fig. 1B), and it is present in the essential oils of various plants species, such as
Eucalyptus citriodora Hook [12] and Zanthoxylum schinifolium

[13]. Isopulegol has been used in the manufacture of
fragrances with blossom compositions [14], however, reports with reference to its therapeutic effects, as described in the present work, are scarce in literature.
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